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[RFC,v5,000/126] error: auto propagated local_err

Message ID 20191011160552.22907-1-vsementsov@virtuozzo.com (mailing list archive)
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Series error: auto propagated local_err | expand

Message

Vladimir Sementsov-Ogievskiy Oct. 11, 2019, 4:03 p.m. UTC
Hi all!

At the request of Markus: full version of errp propagation. Let's look
at it. Cover as much as possible, except inserting macro invocation
where it's not necessary.

It's huge, and so it's an RFC.

In v5 I've added a lot more preparation cleanups:
01-23 are preparation cleanups
  01: not changed, keep Eric's r-b
  02: improve commit msg [Markus], keep Eric's r-b
  03: changed, only error API here, drop r-b
24 is core macro
  - improve cover letter, wording and macro code style
  - keep Eric's r-b
25-26: automation scripts
   - commit-per-subsystem changed a lot. it's a draft, don't bother too
     much with it
   - coccinelle: add support of error_propagate_prepend

27-126: generated patches

====

Here is a proposal of auto propagation for local_err, to not call
error_propagate on every exit point, when we deal with local_err.

There are also two issues with errp:

1. error_fatal & error_append_hint/error_prepend: user can't see this
additional info, because exit() happens in error_setg earlier than info
is added. [Reported by Greg Kurz]

2. error_abort & error_propagate: when we wrap
error_abort by local_err+error_propagate, resulting coredump will
refer to error_propagate and not to the place where error happened.
(the macro itself don't fix the issue, but it allows to [3.] drop all
local_err+error_propagate pattern, which will definitely fix the issue)
[Reported by Kevin Wolf]

====

Generated patches split:

misc
   hw/misc/ivshmem.c
   hw/misc/tmp105.c
   hw/misc/tmp421.c
s390x
   hw/intc/s390_flic_kvm.c
   hw/s390x/3270-ccw.c
   hw/s390x/css-bridge.c
   hw/s390x/css.c
   hw/s390x/s390-skeys.c
   hw/s390x/s390-virtio-ccw.c
   hw/s390x/sclp.c
   hw/s390x/tod-kvm.c
   hw/vfio/ccw.c
   target/s390x/cpu.c
tcg
   exec.c
   hw/arm/armv7m.c
   hw/arm/smmu-common.c
   hw/arm/smmuv3.c
   hw/cpu/a15mpcore.c
   hw/cpu/a9mpcore.c
   hw/cpu/arm11mpcore.c
   hw/i386/pc.c
   hw/intc/nios2_iic.c
   hw/mips/cps.c
   hw/riscv/riscv_hart.c
   hw/riscv/sifive_e.c
   hw/riscv/sifive_u.c
   hw/sd/milkymist-memcard.c
   target/alpha/cpu.c
   target/arm/cpu.c
   target/arm/cpu64.c
   target/cris/cpu.c
   target/hppa/cpu.c
   target/i386/cpu.c
   target/lm32/cpu.c
   target/m68k/cpu.c
   target/microblaze/cpu.c
   target/mips/cpu.c
   target/moxie/cpu.c
   target/nios2/cpu.c
   target/openrisc/cpu.c
   target/ppc/compat.c
   target/ppc/translate_init.inc.c
   target/riscv/cpu.c
   target/sh4/cpu.c
   target/sparc/cpu.c
   target/tricore/cpu.c
   target/unicore32/cpu.c
   target/xtensa/cpu.c
kvm
   target/ppc/kvm.c
   target/s390x/cpu_models.c
xen
   hw/block/dataplane/xen-block.c
   hw/block/xen-block.c
   hw/xen/xen-backend.c
   hw/xen/xen-bus.c
   hw/xen/xen-host-pci-device.c
   hw/xen/xen_pt.c
   hw/xen/xen_pt_config_init.c
Hosts
   qga/commands-win32.c
   util/oslib-posix.c
ARM Machines
   hw/arm/allwinner-a10.c
   hw/arm/aspeed_soc.c
   hw/arm/bcm2835_peripherals.c
   hw/arm/bcm2836.c
   hw/arm/digic.c
   hw/arm/fsl-imx25.c
   hw/arm/fsl-imx31.c
   hw/arm/fsl-imx6.c
   hw/arm/integratorcp.c
   hw/arm/msf2-soc.c
   hw/arm/nrf51_soc.c
   hw/arm/stm32f205_soc.c
   hw/arm/virt.c
   hw/arm/xlnx-versal-virt.c
   hw/arm/xlnx-zynqmp.c
   hw/cpu/realview_mpcore.c
   hw/display/bcm2835_fb.c
   hw/dma/bcm2835_dma.c
   hw/dma/xilinx_axidma.c
   hw/gpio/aspeed_gpio.c
   hw/gpio/bcm2835_gpio.c
   hw/intc/arm_gic.c
   hw/intc/arm_gic_kvm.c
   hw/intc/arm_gicv3.c
   hw/intc/arm_gicv3_its_kvm.c
   hw/intc/arm_gicv3_kvm.c
   hw/intc/armv7m_nvic.c
   hw/intc/realview_gic.c
   hw/microblaze/xlnx-zynqmp-pmu.c
   hw/misc/bcm2835_mbox.c
   hw/misc/bcm2835_property.c
   hw/misc/msf2-sysreg.c
   hw/net/xilinx_axienet.c
   hw/nvram/nrf51_nvm.c
   hw/timer/aspeed_timer.c
   hw/watchdog/wdt_aspeed.c
MIPS Machines
   hw/core/loader-fit.c
PowerPC Machines
   hw/intc/pnv_xive.c
   hw/intc/xics.c
   hw/intc/xics_kvm.c
   hw/intc/xics_pnv.c
   hw/intc/xics_spapr.c
   hw/isa/pc87312.c
   hw/misc/macio/macio.c
   hw/ppc/e500.c
   hw/ppc/mac_newworld.c
   hw/ppc/pnv.c
   hw/ppc/pnv_core.c
   hw/ppc/pnv_homer.c
   hw/ppc/pnv_lpc.c
   hw/ppc/pnv_occ.c
   hw/ppc/pnv_psi.c
   hw/ppc/spapr.c
   hw/ppc/spapr_caps.c
   hw/ppc/spapr_cpu_core.c
   hw/ppc/spapr_drc.c
   hw/ppc/spapr_irq.c
   hw/ppc/spapr_pci.c
   hw/ppc/spapr_vio.c
SPARC Machines
   hw/sparc/sun4m.c
   hw/sparc64/sun4u.c
S390 Machines
   hw/s390x/ipl.c
   hw/s390x/s390-pci-bus.c
X86 Machines
   hw/acpi/ich9.c
   hw/char/debugcon.c
   hw/char/serial-pci-multi.c
   hw/char/serial-pci.c
   hw/core/machine.c
   hw/core/numa.c
   hw/intc/apic_common.c
   hw/pci-host/piix.c
IDE
   hw/ide/qdev.c
Floppy
   hw/block/fdc.c
IPack
   hw/ipack/ipack.c
PCI
   hw/pci-bridge/gen_pcie_root_port.c
   hw/pci-bridge/pci_bridge_dev.c
   hw/pci-bridge/pci_expander_bridge.c
   hw/pci-bridge/pcie_pci_bridge.c
   hw/pci-bridge/pcie_root_port.c
   hw/pci/pci.c
   hw/pci/pcie.c
   hw/pci/shpc.c
ACPI/SMBIOS
   hw/acpi/core.c
   hw/acpi/cpu_hotplug.c
   hw/acpi/memory_hotplug.c
   hw/mem/memory-device.c
   hw/mem/pc-dimm.c
   hw/smbios/smbios.c
Network devices
   hw/net/dp8393x.c
   hw/net/ne2000-isa.c
pflash
   hw/block/pflash_cfi01.c
   hw/block/pflash_cfi02.c
SCSI
   hw/scsi/esp-pci.c
   hw/scsi/mptsas.c
   hw/scsi/scsi-bus.c
   hw/scsi/scsi-disk.c
   hw/scsi/scsi-generic.c
   hw/scsi/virtio-scsi.c
SD (Secure Card)
   hw/sd/sdhci-pci.c
   hw/sd/sdhci.c
USB
   hw/usb/bus.c
   hw/usb/ccid-card-emulated.c
   hw/usb/dev-smartcard-reader.c
   hw/usb/dev-storage.c
   hw/usb/hcd-ohci-pci.c
   hw/usb/hcd-ohci.c
   hw/usb/hcd-uhci.c
   hw/usb/hcd-xhci.c
USB (serial adapter)
   hw/usb/dev-serial.c
VFIO
   hw/vfio/common.c
   hw/vfio/pci-quirks.c
   hw/vfio/pci.c
   hw/vfio/platform.c
vfio-ccw
   hw/s390x/s390-ccw.c
vhost
   hw/block/vhost-user-blk.c
   hw/scsi/vhost-scsi.c
   hw/scsi/vhost-user-scsi.c
   hw/virtio/vhost-vsock.c
virtio
   hw/virtio/virtio-balloon.c
   hw/virtio/virtio-bus.c
   hw/virtio/virtio-pci.c
   hw/virtio/virtio-rng-pci.c
   hw/virtio/virtio.c
virtio-9p
   hw/9pfs/9p-local.c
   hw/9pfs/9p.c
virtio-blk
   hw/block/dataplane/virtio-blk.c
   hw/block/virtio-blk.c
virtio-ccw
   hw/s390x/virtio-ccw-crypto.c
   hw/s390x/virtio-ccw-rng.c
   hw/s390x/virtio-ccw.c
virtio-input
   hw/input/virtio-input.c
virtio-serial
   hw/char/virtio-serial-bus.c
virtio-rng
   backends/rng.c
   hw/virtio/virtio-rng.c
megasas
   hw/scsi/megasas.c
NVDIMM
   hw/mem/nvdimm.c
eepro100
   hw/net/eepro100.c
virtio-gpu
   hw/display/virtio-gpu-base.c
   hw/display/virtio-gpu-pci.c
   hw/display/virtio-vga.c
fw_cfg
   hw/nvram/fw_cfg.c
XIVE
   hw/intc/spapr_xive.c
   hw/intc/spapr_xive_kvm.c
   hw/intc/xive.c
Audio
   audio/audio.c
   hw/audio/intel-hda.c
block
   block.c
   block/backup.c
   block/block-backend.c
   block/commit.c
   block/crypto.c
   block/dirty-bitmap.c
   block/io.c
   block/mirror.c
   block/qapi.c
   block/snapshot.c
   block/throttle-groups.c
   block/throttle.c
   block/vxhs.c
   blockdev.c
   blockjob.c
   hw/block/onenand.c
   job.c
scsi
   scsi/pr-manager-helper.c
chardev
   chardev/char-socket.c
   chardev/char.c
   chardev/spice.c
cmdline
   util/qemu-option.c
Dump
   dump/dump.c
   dump/win_dump.c
Memory API
   memory.c
SPICE
   hw/display/qxl.c
Graphics
   ui/input-barrier.c
   ui/input.c
   ui/vnc.c
Main loop
   util/main-loop.c
   vl.c
Human Monitor (HMP)
   monitor/misc.c
net
   net/can/can_host.c
   net/dump.c
   net/filter-buffer.c
   net/filter.c
   net/net.c
   net/netmap.c
   net/tap.c
hostmem
   backends/hostmem-file.c
   backends/hostmem-memfd.c
   backends/hostmem.c
cryptodev
   backends/cryptodev-vhost-user.c
   backends/cryptodev.c
QAPI
   qapi/qapi-visit-core.c
   qapi/qmp-dispatch.c
   qapi/string-input-visitor.c
qga
   qga/commands-posix.c
QOM
   hw/core/qdev-properties-system.c
   hw/core/qdev-properties.c
   hw/core/qdev.c
   qdev-monitor.c
   qom/object.c
   qom/object_interfaces.c
   qom/qom-qobject.c
QMP
   monitor/qmp-cmds.c
SLIRP
   net/slirp.c
Tracing
   trace/qmp.c
TPM
   hw/tpm/tpm_util.c
   tpm.c
Migration
   migration/migration.c
   migration/ram.c
   migration/rdma.c
   migration/savevm.c
   migration/socket.c
Cryptography
   crypto/block-luks.c
   crypto/secret.c
   crypto/tlssession.c
I/O Channels
   io/dns-resolver.c
   io/net-listener.c
Sockets
   util/qemu-sockets.c
colo
   migration/colo.c
Record/replay
   block/blkreplay.c
VMDK
   block/vmdk.c
RBD
   block/rbd.c
Sheepdog
   block/sheepdog.c
VHDX
   block/vhdx-log.c
   block/vhdx.c
VDI
   block/vdi.c
iSCSI
   block/iscsi.c
nbd
   include/block/nbd.h
   block/nbd.c
   nbd/client.c
   nbd/server.c
NFS
   block/nfs.c
SSH
   block/ssh.c
CURL
   block/curl.c
GLUSTER
   block/gluster.c
NVMe Block Driver
   block/nvme.c
Bootdevice
   bootdevice.c
Quorum
   block/quorum.c
blklogwrites
   block/blklogwrites.c
blkverify
   block/blkverify.c
parallels
   block/parallels.c
qed
   block/qed.c
raw
   block/file-posix.c
   block/file-win32.c
   block/raw-format.c
qcow2
   block/qcow2-bitmap.c
   block/qcow2.c
qcow
   block/qcow.c
blkdebug
   block/blkdebug.c
vpc
   block/vpc.c
vvfat
   block/vvfat.c
Replication
   block/replication.c
   replication.c
PVRDMA
   hw/rdma/vmw/pvrdma_main.c
hw/core/bus.c
   hw/core/bus.c
hw/cpu/core.c
   hw/cpu/core.c
hw/sd/ssi-sd.c
   hw/sd/ssi-sd.c
iothread.c
   iothread.c
memory_mapping.c
   memory_mapping.c
target/tilegx/cpu.c
   target/tilegx/cpu.c
tests/test-image-locking.c
   tests/test-image-locking.c
util/qemu-config.c
   util/qemu-config.c


Vladimir Sementsov-Ogievskiy (126):
  hw/core/loader-fit: fix freeing errp in fit_load_fdt
  net/net: Clean up variable shadowing in net_client_init()
  error: rename errp to errp_in where it is IN-argument
  hmp: drop Error pointer indirection in hmp_handle_error
  vnc: drop Error pointer indirection in vnc_client_io_error
  qdev-monitor: well form error hint helpers
  nbd: well form nbd_iter_channel_error errp handler
  ppc: well form kvmppc_hint_smt_possible error hint helper
  9pfs: well form error hint helpers
  hw/core/qdev: cleanup Error ** variables
  block/snapshot: rename Error ** parameter to more common errp
  hw/i386/amd_iommu: rename Error ** parameter to more common errp
  qga: rename Error ** parameter to more common errp
  monitor/qmp-cmds: rename Error ** parameter to more common errp
  hw/s390x: rename Error ** parameter to more common errp
  hw/sd: rename Error ** parameter to more common errp
  hw/tpm: rename Error ** parameter to more common errp
  hw/usb: rename Error ** parameter to more common errp
  include/block/snapshot.h: rename Error ** parameter to more common
    errp
  include/qom/object.h: rename Error ** parameter to more common errp
  qapi/error: add (Error **errp) cleaning APIs
  backends/cryptodev: drop local_err from cryptodev_backend_complete()
  hw/vfio/ap: drop local_err from vfio_ap_realize
  error: auto propagated local_err
  scripts: add coccinelle script to use auto propagated errp
  python: add commit-per-subsystem.py
  misc: introduce ERRP_AUTO_PROPAGATE
  s390x: introduce ERRP_AUTO_PROPAGATE
  tcg: introduce ERRP_AUTO_PROPAGATE
  kvm: introduce ERRP_AUTO_PROPAGATE
  xen: introduce ERRP_AUTO_PROPAGATE
  Hosts: introduce ERRP_AUTO_PROPAGATE
  ARM Machines: introduce ERRP_AUTO_PROPAGATE
  MIPS Machines: introduce ERRP_AUTO_PROPAGATE
  PowerPC Machines: introduce ERRP_AUTO_PROPAGATE
  SPARC Machines: introduce ERRP_AUTO_PROPAGATE
  S390 Machines: introduce ERRP_AUTO_PROPAGATE
  X86 Machines: introduce ERRP_AUTO_PROPAGATE
  IDE: introduce ERRP_AUTO_PROPAGATE
  Floppy: introduce ERRP_AUTO_PROPAGATE
  IPack: introduce ERRP_AUTO_PROPAGATE
  PCI: introduce ERRP_AUTO_PROPAGATE
  ACPI/SMBIOS: introduce ERRP_AUTO_PROPAGATE
  Network devices: introduce ERRP_AUTO_PROPAGATE
  pflash: introduce ERRP_AUTO_PROPAGATE
  SCSI: introduce ERRP_AUTO_PROPAGATE
  SD (Secure Card): introduce ERRP_AUTO_PROPAGATE
  USB: introduce ERRP_AUTO_PROPAGATE
  USB (serial adapter): introduce ERRP_AUTO_PROPAGATE
  VFIO: introduce ERRP_AUTO_PROPAGATE
  vfio-ccw: introduce ERRP_AUTO_PROPAGATE
  vhost: introduce ERRP_AUTO_PROPAGATE
  virtio: introduce ERRP_AUTO_PROPAGATE
  virtio-9p: introduce ERRP_AUTO_PROPAGATE
  virtio-blk: introduce ERRP_AUTO_PROPAGATE
  virtio-ccw: introduce ERRP_AUTO_PROPAGATE
  virtio-input: introduce ERRP_AUTO_PROPAGATE
  virtio-serial: introduce ERRP_AUTO_PROPAGATE
  virtio-rng: introduce ERRP_AUTO_PROPAGATE
  megasas: introduce ERRP_AUTO_PROPAGATE
  NVDIMM: introduce ERRP_AUTO_PROPAGATE
  eepro100: introduce ERRP_AUTO_PROPAGATE
  virtio-gpu: introduce ERRP_AUTO_PROPAGATE
  fw_cfg: introduce ERRP_AUTO_PROPAGATE
  XIVE: introduce ERRP_AUTO_PROPAGATE
  Audio: introduce ERRP_AUTO_PROPAGATE
  block: introduce ERRP_AUTO_PROPAGATE
  scsi: introduce ERRP_AUTO_PROPAGATE
  chardev: introduce ERRP_AUTO_PROPAGATE
  cmdline: introduce ERRP_AUTO_PROPAGATE
  Dump: introduce ERRP_AUTO_PROPAGATE
  Memory API: introduce ERRP_AUTO_PROPAGATE
  SPICE: introduce ERRP_AUTO_PROPAGATE
  Graphics: introduce ERRP_AUTO_PROPAGATE
  Main loop: introduce ERRP_AUTO_PROPAGATE
  Human Monitor (HMP): introduce ERRP_AUTO_PROPAGATE
  net: introduce ERRP_AUTO_PROPAGATE
  hostmem: introduce ERRP_AUTO_PROPAGATE
  cryptodev: introduce ERRP_AUTO_PROPAGATE
  QAPI: introduce ERRP_AUTO_PROPAGATE
  qga: introduce ERRP_AUTO_PROPAGATE
  QOM: introduce ERRP_AUTO_PROPAGATE
  QMP: introduce ERRP_AUTO_PROPAGATE
  SLIRP: introduce ERRP_AUTO_PROPAGATE
  Tracing: introduce ERRP_AUTO_PROPAGATE
  TPM: introduce ERRP_AUTO_PROPAGATE
  Migration: introduce ERRP_AUTO_PROPAGATE
  Cryptography: introduce ERRP_AUTO_PROPAGATE
  I/O Channels: introduce ERRP_AUTO_PROPAGATE
  Sockets: introduce ERRP_AUTO_PROPAGATE
  colo: introduce ERRP_AUTO_PROPAGATE
  Record/replay: introduce ERRP_AUTO_PROPAGATE
  VMDK: introduce ERRP_AUTO_PROPAGATE
  RBD: introduce ERRP_AUTO_PROPAGATE
  Sheepdog: introduce ERRP_AUTO_PROPAGATE
  VHDX: introduce ERRP_AUTO_PROPAGATE
  VDI: introduce ERRP_AUTO_PROPAGATE
  iSCSI: introduce ERRP_AUTO_PROPAGATE
  nbd: introduce ERRP_AUTO_PROPAGATE
  NFS: introduce ERRP_AUTO_PROPAGATE
  SSH: introduce ERRP_AUTO_PROPAGATE
  CURL: introduce ERRP_AUTO_PROPAGATE
  GLUSTER: introduce ERRP_AUTO_PROPAGATE
  NVMe Block Driver: introduce ERRP_AUTO_PROPAGATE
  Bootdevice: introduce ERRP_AUTO_PROPAGATE
  Quorum: introduce ERRP_AUTO_PROPAGATE
  blklogwrites: introduce ERRP_AUTO_PROPAGATE
  blkverify: introduce ERRP_AUTO_PROPAGATE
  parallels: introduce ERRP_AUTO_PROPAGATE
  qed: introduce ERRP_AUTO_PROPAGATE
  raw: introduce ERRP_AUTO_PROPAGATE
  qcow2: introduce ERRP_AUTO_PROPAGATE
  qcow: introduce ERRP_AUTO_PROPAGATE
  blkdebug: introduce ERRP_AUTO_PROPAGATE
  vpc: introduce ERRP_AUTO_PROPAGATE
  vvfat: introduce ERRP_AUTO_PROPAGATE
  Replication: introduce ERRP_AUTO_PROPAGATE
  PVRDMA: introduce ERRP_AUTO_PROPAGATE
  hw/core/bus.c: introduce ERRP_AUTO_PROPAGATE
  hw/cpu/core.c: introduce ERRP_AUTO_PROPAGATE
  hw/sd/ssi-sd.c: introduce ERRP_AUTO_PROPAGATE
  iothread.c: introduce ERRP_AUTO_PROPAGATE
  memory_mapping.c: introduce ERRP_AUTO_PROPAGATE
  target/tilegx/cpu.c: introduce ERRP_AUTO_PROPAGATE
  tests/test-image-locking.c: introduce ERRP_AUTO_PROPAGATE
  util/qemu-config.c: introduce ERRP_AUTO_PROPAGATE


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 include/block/nbd.h                           |   1 +
 include/block/snapshot.h                      |   2 +-
 include/monitor/hmp.h                         |   2 +-
 include/qapi/error.h                          |  69 ++++-
 include/qom/object.h                          |   4 +-
 target/ppc/kvm_ppc.h                          |   4 +-
 ui/vnc.h                                      |   2 +-
 audio/audio.c                                 |  12 +-
 backends/cryptodev-vhost-user.c               |  10 +-
 backends/cryptodev.c                          |  25 +-
 backends/hostmem-file.c                       |  21 +-
 backends/hostmem-memfd.c                      |  18 +-
 backends/hostmem.c                            |  41 ++-
 backends/rng.c                                |   7 +-
 block.c                                       | 225 +++++++---------
 block/backup.c                                |   1 +
 block/blkdebug.c                              |  36 ++-
 block/blklogwrites.c                          |  22 +-
 block/blkreplay.c                             |   7 +-
 block/blkverify.c                             |  17 +-
 block/block-backend.c                         |  19 +-
 block/commit.c                                |   7 +-
 block/crypto.c                                |  14 +-
 block/curl.c                                  |   7 +-
 block/dirty-bitmap.c                          |   1 +
 block/file-posix.c                            |  79 +++---
 block/file-win32.c                            |  29 +-
 block/gluster.c                               |  69 +++--
 block/io.c                                    |  12 +-
 block/iscsi.c                                 |  36 ++-
 block/mirror.c                                |  19 +-
 block/nbd.c                                   |  59 ++--
 block/nfs.c                                   |   7 +-
 block/nvme.c                                  |  19 +-
 block/parallels.c                             |  30 +--
 block/qapi.c                                  |  26 +-
 block/qcow.c                                  |  17 +-
 block/qcow2-bitmap.c                          |   9 +-
 block/qcow2.c                                 |  98 +++----
 block/qed.c                                   |  18 +-
 block/quorum.c                                |  23 +-
 block/raw-format.c                            |   7 +-
 block/rbd.c                                   |  29 +-
 block/replication.c                           |  40 ++-
 block/sheepdog.c                              |  73 +++--
 block/snapshot.c                              |  20 +-
 block/ssh.c                                   |  12 +-
 block/throttle-groups.c                       |  24 +-
 block/throttle.c                              |   7 +-
 block/vdi.c                                   |  15 +-
 block/vhdx-log.c                              |   1 +
 block/vhdx.c                                  |  22 +-
 block/vmdk.c                                  |  41 ++-
 block/vpc.c                                   |  28 +-
 block/vvfat.c                                 |  12 +-
 block/vxhs.c                                  |  23 +-
 blockdev.c                                    | 252 ++++++++----------
 blockjob.c                                    |   8 +-
 bootdevice.c                                  |  31 +--
 chardev/char-socket.c                         |   7 +-
 chardev/char.c                                |  20 +-
 chardev/spice.c                               |   1 +
 crypto/block-luks.c                           |  56 ++--
 crypto/secret.c                               |  17 +-
 crypto/tlssession.c                           |   7 +-
 dump/dump-hmp-cmds.c                          |   4 +-
 dump/dump.c                                   | 151 +++++------
 dump/win_dump.c                               |  29 +-
 exec.c                                        |  21 +-
 hw/9pfs/9p-local.c                            |  12 +-
 hw/9pfs/9p-proxy.c                            |   5 +-
 hw/9pfs/9p.c                                  |   1 +
 hw/acpi/core.c                                |  18 +-
 hw/acpi/cpu_hotplug.c                         |   2 +-
 hw/acpi/ich9.c                                |  30 +--
 hw/acpi/memory_hotplug.c                      |   7 +-
 hw/arm/allwinner-a10.c                        |  27 +-
 hw/arm/armv7m.c                               |  52 ++--
 hw/arm/aspeed_soc.c                           |   1 +
 hw/arm/bcm2835_peripherals.c                  |  85 +++---
 hw/arm/bcm2836.c                              |  41 ++-
 hw/arm/digic.c                                |  22 +-
 hw/arm/fsl-imx25.c                            |  62 ++---
 hw/arm/fsl-imx31.c                            |  57 ++--
 hw/arm/fsl-imx6.c                             |  81 +++---
 hw/arm/integratorcp.c                         |   7 +-
 hw/arm/msf2-soc.c                             |  22 +-
 hw/arm/nrf51_soc.c                            |  47 ++--
 hw/arm/smmu-common.c                          |   7 +-
 hw/arm/smmuv3.c                               |   7 +-
 hw/arm/stm32f205_soc.c                        |  39 ++-
 hw/arm/virt.c                                 |   2 +
 hw/arm/xlnx-versal-virt.c                     |   7 +-
 hw/arm/xlnx-zynqmp.c                          |  86 +++---
 hw/audio/intel-hda.c                          |  13 +-
 hw/block/dataplane/virtio-blk.c               |   1 +
 hw/block/dataplane/xen-block.c                |  17 +-
 hw/block/fdc.c                                |  19 +-
 hw/block/onenand.c                            |   7 +-
 hw/block/pflash_cfi01.c                       |   7 +-
 hw/block/pflash_cfi02.c                       |   7 +-
 hw/block/vhost-user-blk.c                     |   6 +-
 hw/block/virtio-blk.c                         |   7 +-
 hw/block/xen-block.c                          | 119 ++++-----
 hw/char/debugcon.c                            |   7 +-
 hw/char/serial-pci-multi.c                    |   7 +-
 hw/char/serial-pci.c                          |   7 +-
 hw/char/virtio-serial-bus.c                   |   7 +-
 hw/core/bus.c                                 |  15 +-
 hw/core/loader-fit.c                          |   7 +-
 hw/core/machine-hmp-cmds.c                    |   6 +-
 hw/core/machine.c                             |  21 +-
 hw/core/numa.c                                |  51 ++--
 hw/core/qdev-properties-system.c              |  28 +-
 hw/core/qdev-properties.c                     |  89 +++----
 hw/core/qdev.c                                |  58 ++--
 hw/cpu/a15mpcore.c                            |   7 +-
 hw/cpu/a9mpcore.c                             |  27 +-
 hw/cpu/arm11mpcore.c                          |  22 +-
 hw/cpu/core.c                                 |  14 +-
 hw/cpu/realview_mpcore.c                      |  12 +-
 hw/display/bcm2835_fb.c                       |   6 +-
 hw/display/qxl.c                              |   7 +-
 hw/display/virtio-gpu-base.c                  |   7 +-
 hw/display/virtio-gpu-pci.c                   |   7 +-
 hw/display/virtio-vga.c                       |   7 +-
 hw/dma/bcm2835_dma.c                          |   6 +-
 hw/dma/xilinx_axidma.c                        |  22 +-
 hw/gpio/aspeed_gpio.c                         |   7 +-
 hw/gpio/bcm2835_gpio.c                        |  10 +-
 hw/i386/amd_iommu.c                           |  14 +-
 hw/i386/pc.c                                  | 120 ++++-----
 hw/ide/qdev.c                                 |  16 +-
 hw/input/virtio-input.c                       |  14 +-
 hw/intc/apic_common.c                         |   7 +-
 hw/intc/arm_gic.c                             |   7 +-
 hw/intc/arm_gic_kvm.c                         |  12 +-
 hw/intc/arm_gicv3.c                           |  12 +-
 hw/intc/arm_gicv3_its_kvm.c                   |   7 +-
 hw/intc/arm_gicv3_kvm.c                       |  17 +-
 hw/intc/armv7m_nvic.c                         |  12 +-
 hw/intc/nios2_iic.c                           |   6 +-
 hw/intc/pnv_xive.c                            |  15 +-
 hw/intc/realview_gic.c                        |   7 +-
 hw/intc/s390_flic_kvm.c                       |   9 +-
 hw/intc/spapr_xive.c                          |  12 +-
 hw/intc/spapr_xive_kvm.c                      |  55 ++--
 hw/intc/xics.c                                |  28 +-
 hw/intc/xics_kvm.c                            |  30 +--
 hw/intc/xics_pnv.c                            |   7 +-
 hw/intc/xics_spapr.c                          |   7 +-
 hw/intc/xive.c                                |  27 +-
 hw/ipack/ipack.c                              |   5 +-
 hw/isa/pc87312.c                              |   7 +-
 hw/mem/memory-device.c                        |  20 +-
 hw/mem/nvdimm.c                               |  25 +-
 hw/mem/pc-dimm.c                              |  23 +-
 hw/microblaze/xlnx-zynqmp-pmu.c               |  12 +-
 hw/mips/cps.c                                 |  46 ++--
 hw/misc/bcm2835_mbox.c                        |   6 +-
 hw/misc/bcm2835_property.c                    |  10 +-
 hw/misc/ivshmem.c                             |  37 ++-
 hw/misc/macio/macio.c                         |  68 ++---
 hw/misc/msf2-sysreg.c                         |   1 +
 hw/misc/tmp105.c                              |   7 +-
 hw/misc/tmp421.c                              |   7 +-
 hw/net/dp8393x.c                              |   7 +-
 hw/net/eepro100.c                             |   7 +-
 hw/net/ne2000-isa.c                           |  17 +-
 hw/net/xilinx_axienet.c                       |  22 +-
 hw/nvram/fw_cfg.c                             |  14 +-
 hw/nvram/nrf51_nvm.c                          |   7 +-
 hw/pci-bridge/gen_pcie_root_port.c            |   7 +-
 hw/pci-bridge/pci_bridge_dev.c                |  13 +-
 hw/pci-bridge/pci_expander_bridge.c           |   7 +-
 hw/pci-bridge/pcie_pci_bridge.c               |   8 +-
 hw/pci-bridge/pcie_root_port.c                |   1 +
 hw/pci-host/piix.c                            |   7 +-
 hw/pci/pci.c                                  |  19 +-
 hw/pci/pcie.c                                 |   7 +-
 hw/pci/shpc.c                                 |  14 +-
 hw/ppc/e500.c                                 |   7 +-
 hw/ppc/mac_newworld.c                         |   1 +
 hw/ppc/pnv.c                                  | 109 ++++----
 hw/ppc/pnv_core.c                             |  23 +-
 hw/ppc/pnv_homer.c                            |   5 +-
 hw/ppc/pnv_lpc.c                              |  26 +-
 hw/ppc/pnv_occ.c                              |   5 +-
 hw/ppc/pnv_psi.c                              |  23 +-
 hw/ppc/spapr.c                                | 133 ++++-----
 hw/ppc/spapr_caps.c                           |  57 ++--
 hw/ppc/spapr_cpu_core.c                       |  36 ++-
 hw/ppc/spapr_drc.c                            |  48 ++--
 hw/ppc/spapr_irq.c                            |  98 +++----
 hw/ppc/spapr_pci.c                            |  97 +++----
 hw/ppc/spapr_vio.c                            |  12 +-
 hw/rdma/vmw/pvrdma_main.c                     |   1 +
 hw/riscv/riscv_hart.c                         |   7 +-
 hw/riscv/sifive_e.c                           |   7 +-
 hw/riscv/sifive_u.c                           |  11 +-
 hw/s390x/3270-ccw.c                           |  13 +-
 hw/s390x/css-bridge.c                         |   7 +-
 hw/s390x/css.c                                |   7 +-
 hw/s390x/event-facility.c                     |   2 +-
 hw/s390x/ipl.c                                |  24 +-
 hw/s390x/s390-ccw.c                           |  19 +-
 hw/s390x/s390-pci-bus.c                       |  37 ++-
 hw/s390x/s390-skeys.c                         |   7 +-
 hw/s390x/s390-stattrib.c                      |   3 +-
 hw/s390x/s390-virtio-ccw.c                    |  11 +-
 hw/s390x/sclp.c                               |  15 +-
 hw/s390x/tod-kvm.c                            |  14 +-
 hw/s390x/virtio-ccw-crypto.c                  |   7 +-
 hw/s390x/virtio-ccw-rng.c                     |   7 +-
 hw/s390x/virtio-ccw.c                         |  13 +-
 hw/scsi/esp-pci.c                             |   7 +-
 hw/scsi/megasas.c                             |  11 +-
 hw/scsi/mptsas.c                              |  13 +-
 hw/scsi/scsi-bus.c                            |  24 +-
 hw/scsi/scsi-disk.c                           |   8 +-
 hw/scsi/scsi-generic.c                        |   1 +
 hw/scsi/vhost-scsi.c                          |  12 +-
 hw/scsi/vhost-user-scsi.c                     |   7 +-
 hw/scsi/virtio-scsi.c                         |   7 +-
 hw/sd/milkymist-memcard.c                     |  11 +-
 hw/sd/sdhci-pci.c                             |   7 +-
 hw/sd/sdhci.c                                 |  23 +-
 hw/sd/ssi-sd.c                                |  14 +-
 hw/smbios/smbios.c                            |  42 ++-
 hw/sparc/sun4m.c                              |  21 +-
 hw/sparc64/sun4u.c                            |   7 +-
 hw/timer/aspeed_timer.c                       |   6 +-
 hw/tpm/tpm_emulator.c                         |   8 +-
 hw/tpm/tpm_util.c                             |   7 +-
 hw/usb/bus.c                                  |  37 ++-
 hw/usb/ccid-card-emulated.c                   |   1 +
 hw/usb/dev-network.c                          |   2 +-
 hw/usb/dev-serial.c                           |   7 +-
 hw/usb/dev-smartcard-reader.c                 |  14 +-
 hw/usb/dev-storage.c                          |  17 +-
 hw/usb/hcd-ohci-pci.c                         |   7 +-
 hw/usb/hcd-ohci.c                             |  14 +-
 hw/usb/hcd-uhci.c                             |   7 +-
 hw/usb/hcd-xhci.c                             |  13 +-
 hw/vfio/ap.c                                  |  16 +-
 hw/vfio/ccw.c                                 |  24 +-
 hw/vfio/common.c                              |   3 +
 hw/vfio/pci-quirks.c                          |   8 +-
 hw/vfio/pci.c                                 |  42 ++-
 hw/vfio/platform.c                            |   1 +
 hw/virtio/vhost-vsock.c                       |   1 +
 hw/virtio/virtio-balloon.c                    |  35 ++-
 hw/virtio/virtio-bus.c                        |  17 +-
 hw/virtio/virtio-pci.c                        |   2 +
 hw/virtio/virtio-rng-pci.c                    |   7 +-
 hw/virtio/virtio-rng.c                        |   7 +-
 hw/virtio/virtio.c                            |  19 +-
 hw/watchdog/wdt_aspeed.c                      |   5 +-
 hw/xen/xen-backend.c                          |   7 +-
 hw/xen/xen-bus.c                              |  92 +++----
 hw/xen/xen-host-pci-device.c                  |  27 +-
 hw/xen/xen_pt.c                               |  25 +-
 hw/xen/xen_pt_config_init.c                   |  20 +-
 io/dns-resolver.c                             |   7 +-
 io/net-listener.c                             |   7 +-
 iothread.c                                    |  27 +-
 job.c                                         |   7 +-
 memory.c                                      |  63 ++---
 memory_mapping.c                              |   7 +-
 migration/colo.c                              |  38 ++-
 migration/migration.c                         |  39 ++-
 migration/ram.c                               |  13 +-
 migration/rdma.c                              |  13 +-
 migration/savevm.c                            |   2 +
 migration/socket.c                            |  18 +-
 monitor/hmp-cmds.c                            | 155 ++++++-----
 monitor/misc.c                                |   9 +-
 monitor/qmp-cmds.c                            |   9 +-
 nbd/client.c                                  |   5 +
 nbd/server.c                                  |   5 +
 net/can/can_host.c                            |   7 +-
 net/dump.c                                    |  15 +-
 net/filter-buffer.c                           |  15 +-
 net/filter.c                                  |   7 +-
 net/net.c                                     |  58 ++--
 net/netmap.c                                  |   7 +-
 net/slirp.c                                   |   7 +-
 net/tap.c                                     |  47 ++--
 qapi/qapi-visit-core.c                        |  56 ++--
 qapi/qmp-dispatch.c                           |   7 +-
 qapi/string-input-visitor.c                   |   7 +-
 qdev-monitor.c                                |  69 +++--
 qga/commands-posix.c                          | 222 +++++++--------
 qga/commands-win32.c                          | 141 +++++-----
 qga/commands.c                                |  12 +-
 qom/object.c                                  | 246 ++++++++---------
 qom/object_interfaces.c                       |  27 +-
 qom/qom-hmp-cmds.c                            |   4 +-
 qom/qom-qobject.c                             |   7 +-
 replication.c                                 |  28 +-
 scsi/pr-manager-helper.c                      |   7 +-
 target/alpha/cpu.c                            |   7 +-
 target/arm/cpu.c                              |   7 +-
 target/arm/cpu64.c                            |  11 +-
 target/cris/cpu.c                             |   7 +-
 target/hppa/cpu.c                             |   7 +-
 target/i386/cpu.c                             | 117 ++++----
 target/lm32/cpu.c                             |   7 +-
 target/m68k/cpu.c                             |   7 +-
 target/microblaze/cpu.c                       |   7 +-
 target/mips/cpu.c                             |   7 +-
 target/moxie/cpu.c                            |   7 +-
 target/nios2/cpu.c                            |   7 +-
 target/openrisc/cpu.c                         |   7 +-
 target/ppc/compat.c                           |  20 +-
 target/ppc/kvm.c                              |  14 +-
 target/ppc/translate_init.inc.c               |  26 +-
 target/riscv/cpu.c                            |   7 +-
 target/s390x/cpu.c                            |  26 +-
 target/s390x/cpu_models.c                     |   2 +
 target/sh4/cpu.c                              |   7 +-
 target/sparc/cpu.c                            |  14 +-
 target/tilegx/cpu.c                           |   7 +-
 target/tricore/cpu.c                          |   7 +-
 target/unicore32/cpu.c                        |   7 +-
 target/xtensa/cpu.c                           |   7 +-
 tests/test-image-locking.c                    |   7 +-
 tpm.c                                         |   7 +-
 trace/qmp.c                                   |  14 +-
 ui/input-barrier.c                            |   7 +-
 ui/input.c                                    |  14 +-
 ui/vnc.c                                      |  39 ++-
 util/error.c                                  |  30 +--
 util/main-loop.c                              |   5 +-
 util/oslib-posix.c                            |   6 +-
 util/qemu-config.c                            |  29 +-
 util/qemu-option.c                            |  59 ++--
 util/qemu-sockets.c                           |  31 +--
 vl.c                                          |  14 +-
 python/commit-per-subsystem.py                | 204 ++++++++++++++
 scripts/coccinelle/auto-propagated-errp.cocci | 118 ++++++++
 341 files changed, 3851 insertions(+), 4455 deletions(-)
 create mode 100755 python/commit-per-subsystem.py
 create mode 100644 scripts/coccinelle/auto-propagated-errp.cocci

Comments

Vladimir Sementsov-Ogievskiy Oct. 14, 2019, 8:37 a.m. UTC | #1
11.10.2019 20:02, Eric Blake wrote:
> On 10/11/19 11:03 AM, Vladimir Sementsov-Ogievskiy wrote:
>> Hi all!
>>
>> At the request of Markus: full version of errp propagation. Let's look
>> at it. Cover as much as possible, except inserting macro invocation
>> where it's not necessary.
>>
>> It's huge, and so it's an RFC.
> 
> Is there a repo containing these patches, to make it easier to play with them locally without having to 'git am' the entire 126 messages?

Done:

https://src.openvz.org/users/vsementsov/repos/qemu/browse

https://src.openvz.org/scm/~vsementsov/qemu.git #tag up-auto-local-err-v5

> 
> 
>>   util/qemu-sockets.c                           |  31 +--
>>   vl.c                                          |  14 +-
>>   python/commit-per-subsystem.py                | 204 ++++++++++++++
>>   scripts/coccinelle/auto-propagated-errp.cocci | 118 ++++++++
>>   341 files changed, 3851 insertions(+), 4455 deletions(-)
>>   create mode 100755 python/commit-per-subsystem.py
>>   create mode 100644 scripts/coccinelle/auto-propagated-errp.cocci
> 
> So, whether or not we take commit-per-subsystem.py, the overall series appears to be a nice reduction in lines of code.
>
Vladimir Sementsov-Ogievskiy Nov. 8, 2019, 3:30 p.m. UTC | #2
Finally, what is the plan?

Markus what do you think?

Now a lot of patches are reviewed, but a lot of are not.

Is there any hope that all patches will be reviewed? Should I resend the
whole series, or may be reduce it to reviewed subsystems only?

11.10.2019 19:03, Vladimir Sementsov-Ogievskiy wrote:
> Hi all!
> 
> At the request of Markus: full version of errp propagation. Let's look
> at it. Cover as much as possible, except inserting macro invocation
> where it's not necessary.
> 
> It's huge, and so it's an RFC.
> 
> In v5 I've added a lot more preparation cleanups:
> 01-23 are preparation cleanups
>    01: not changed, keep Eric's r-b
>    02: improve commit msg [Markus], keep Eric's r-b
>    03: changed, only error API here, drop r-b
> 24 is core macro
>    - improve cover letter, wording and macro code style
>    - keep Eric's r-b
> 25-26: automation scripts
>     - commit-per-subsystem changed a lot. it's a draft, don't bother too
>       much with it
>     - coccinelle: add support of error_propagate_prepend
> 
> 27-126: generated patches
> 
> ====
> 
> Here is a proposal of auto propagation for local_err, to not call
> error_propagate on every exit point, when we deal with local_err.
> 
> There are also two issues with errp:
> 
> 1. error_fatal & error_append_hint/error_prepend: user can't see this
> additional info, because exit() happens in error_setg earlier than info
> is added. [Reported by Greg Kurz]
> 
> 2. error_abort & error_propagate: when we wrap
> error_abort by local_err+error_propagate, resulting coredump will
> refer to error_propagate and not to the place where error happened.
> (the macro itself don't fix the issue, but it allows to [3.] drop all
> local_err+error_propagate pattern, which will definitely fix the issue)
> [Reported by Kevin Wolf]
> 
> ====
> 
> Generated patches split:
> 
> misc
>     hw/misc/ivshmem.c
>     hw/misc/tmp105.c
>     hw/misc/tmp421.c
> s390x
>     hw/intc/s390_flic_kvm.c
>     hw/s390x/3270-ccw.c
>     hw/s390x/css-bridge.c
>     hw/s390x/css.c
>     hw/s390x/s390-skeys.c
>     hw/s390x/s390-virtio-ccw.c
>     hw/s390x/sclp.c
>     hw/s390x/tod-kvm.c
>     hw/vfio/ccw.c
>     target/s390x/cpu.c
> tcg
>     exec.c
>     hw/arm/armv7m.c
>     hw/arm/smmu-common.c
>     hw/arm/smmuv3.c
>     hw/cpu/a15mpcore.c
>     hw/cpu/a9mpcore.c
>     hw/cpu/arm11mpcore.c
>     hw/i386/pc.c
>     hw/intc/nios2_iic.c
>     hw/mips/cps.c
>     hw/riscv/riscv_hart.c
>     hw/riscv/sifive_e.c
>     hw/riscv/sifive_u.c
>     hw/sd/milkymist-memcard.c
>     target/alpha/cpu.c
>     target/arm/cpu.c
>     target/arm/cpu64.c
>     target/cris/cpu.c
>     target/hppa/cpu.c
>     target/i386/cpu.c
>     target/lm32/cpu.c
>     target/m68k/cpu.c
>     target/microblaze/cpu.c
>     target/mips/cpu.c
>     target/moxie/cpu.c
>     target/nios2/cpu.c
>     target/openrisc/cpu.c
>     target/ppc/compat.c
>     target/ppc/translate_init.inc.c
>     target/riscv/cpu.c
>     target/sh4/cpu.c
>     target/sparc/cpu.c
>     target/tricore/cpu.c
>     target/unicore32/cpu.c
>     target/xtensa/cpu.c
> kvm
>     target/ppc/kvm.c
>     target/s390x/cpu_models.c
> xen
>     hw/block/dataplane/xen-block.c
>     hw/block/xen-block.c
>     hw/xen/xen-backend.c
>     hw/xen/xen-bus.c
>     hw/xen/xen-host-pci-device.c
>     hw/xen/xen_pt.c
>     hw/xen/xen_pt_config_init.c
> Hosts
>     qga/commands-win32.c
>     util/oslib-posix.c
> ARM Machines
>     hw/arm/allwinner-a10.c
>     hw/arm/aspeed_soc.c
>     hw/arm/bcm2835_peripherals.c
>     hw/arm/bcm2836.c
>     hw/arm/digic.c
>     hw/arm/fsl-imx25.c
>     hw/arm/fsl-imx31.c
>     hw/arm/fsl-imx6.c
>     hw/arm/integratorcp.c
>     hw/arm/msf2-soc.c
>     hw/arm/nrf51_soc.c
>     hw/arm/stm32f205_soc.c
>     hw/arm/virt.c
>     hw/arm/xlnx-versal-virt.c
>     hw/arm/xlnx-zynqmp.c
>     hw/cpu/realview_mpcore.c
>     hw/display/bcm2835_fb.c
>     hw/dma/bcm2835_dma.c
>     hw/dma/xilinx_axidma.c
>     hw/gpio/aspeed_gpio.c
>     hw/gpio/bcm2835_gpio.c
>     hw/intc/arm_gic.c
>     hw/intc/arm_gic_kvm.c
>     hw/intc/arm_gicv3.c
>     hw/intc/arm_gicv3_its_kvm.c
>     hw/intc/arm_gicv3_kvm.c
>     hw/intc/armv7m_nvic.c
>     hw/intc/realview_gic.c
>     hw/microblaze/xlnx-zynqmp-pmu.c
>     hw/misc/bcm2835_mbox.c
>     hw/misc/bcm2835_property.c
>     hw/misc/msf2-sysreg.c
>     hw/net/xilinx_axienet.c
>     hw/nvram/nrf51_nvm.c
>     hw/timer/aspeed_timer.c
>     hw/watchdog/wdt_aspeed.c
> MIPS Machines
>     hw/core/loader-fit.c
> PowerPC Machines
>     hw/intc/pnv_xive.c
>     hw/intc/xics.c
>     hw/intc/xics_kvm.c
>     hw/intc/xics_pnv.c
>     hw/intc/xics_spapr.c
>     hw/isa/pc87312.c
>     hw/misc/macio/macio.c
>     hw/ppc/e500.c
>     hw/ppc/mac_newworld.c
>     hw/ppc/pnv.c
>     hw/ppc/pnv_core.c
>     hw/ppc/pnv_homer.c
>     hw/ppc/pnv_lpc.c
>     hw/ppc/pnv_occ.c
>     hw/ppc/pnv_psi.c
>     hw/ppc/spapr.c
>     hw/ppc/spapr_caps.c
>     hw/ppc/spapr_cpu_core.c
>     hw/ppc/spapr_drc.c
>     hw/ppc/spapr_irq.c
>     hw/ppc/spapr_pci.c
>     hw/ppc/spapr_vio.c
> SPARC Machines
>     hw/sparc/sun4m.c
>     hw/sparc64/sun4u.c
> S390 Machines
>     hw/s390x/ipl.c
>     hw/s390x/s390-pci-bus.c
> X86 Machines
>     hw/acpi/ich9.c
>     hw/char/debugcon.c
>     hw/char/serial-pci-multi.c
>     hw/char/serial-pci.c
>     hw/core/machine.c
>     hw/core/numa.c
>     hw/intc/apic_common.c
>     hw/pci-host/piix.c
> IDE
>     hw/ide/qdev.c
> Floppy
>     hw/block/fdc.c
> IPack
>     hw/ipack/ipack.c
> PCI
>     hw/pci-bridge/gen_pcie_root_port.c
>     hw/pci-bridge/pci_bridge_dev.c
>     hw/pci-bridge/pci_expander_bridge.c
>     hw/pci-bridge/pcie_pci_bridge.c
>     hw/pci-bridge/pcie_root_port.c
>     hw/pci/pci.c
>     hw/pci/pcie.c
>     hw/pci/shpc.c
> ACPI/SMBIOS
>     hw/acpi/core.c
>     hw/acpi/cpu_hotplug.c
>     hw/acpi/memory_hotplug.c
>     hw/mem/memory-device.c
>     hw/mem/pc-dimm.c
>     hw/smbios/smbios.c
> Network devices
>     hw/net/dp8393x.c
>     hw/net/ne2000-isa.c
> pflash
>     hw/block/pflash_cfi01.c
>     hw/block/pflash_cfi02.c
> SCSI
>     hw/scsi/esp-pci.c
>     hw/scsi/mptsas.c
>     hw/scsi/scsi-bus.c
>     hw/scsi/scsi-disk.c
>     hw/scsi/scsi-generic.c
>     hw/scsi/virtio-scsi.c
> SD (Secure Card)
>     hw/sd/sdhci-pci.c
>     hw/sd/sdhci.c
> USB
>     hw/usb/bus.c
>     hw/usb/ccid-card-emulated.c
>     hw/usb/dev-smartcard-reader.c
>     hw/usb/dev-storage.c
>     hw/usb/hcd-ohci-pci.c
>     hw/usb/hcd-ohci.c
>     hw/usb/hcd-uhci.c
>     hw/usb/hcd-xhci.c
> USB (serial adapter)
>     hw/usb/dev-serial.c
> VFIO
>     hw/vfio/common.c
>     hw/vfio/pci-quirks.c
>     hw/vfio/pci.c
>     hw/vfio/platform.c
> vfio-ccw
>     hw/s390x/s390-ccw.c
> vhost
>     hw/block/vhost-user-blk.c
>     hw/scsi/vhost-scsi.c
>     hw/scsi/vhost-user-scsi.c
>     hw/virtio/vhost-vsock.c
> virtio
>     hw/virtio/virtio-balloon.c
>     hw/virtio/virtio-bus.c
>     hw/virtio/virtio-pci.c
>     hw/virtio/virtio-rng-pci.c
>     hw/virtio/virtio.c
> virtio-9p
>     hw/9pfs/9p-local.c
>     hw/9pfs/9p.c
> virtio-blk
>     hw/block/dataplane/virtio-blk.c
>     hw/block/virtio-blk.c
> virtio-ccw
>     hw/s390x/virtio-ccw-crypto.c
>     hw/s390x/virtio-ccw-rng.c
>     hw/s390x/virtio-ccw.c
> virtio-input
>     hw/input/virtio-input.c
> virtio-serial
>     hw/char/virtio-serial-bus.c
> virtio-rng
>     backends/rng.c
>     hw/virtio/virtio-rng.c
> megasas
>     hw/scsi/megasas.c
> NVDIMM
>     hw/mem/nvdimm.c
> eepro100
>     hw/net/eepro100.c
> virtio-gpu
>     hw/display/virtio-gpu-base.c
>     hw/display/virtio-gpu-pci.c
>     hw/display/virtio-vga.c
> fw_cfg
>     hw/nvram/fw_cfg.c
> XIVE
>     hw/intc/spapr_xive.c
>     hw/intc/spapr_xive_kvm.c
>     hw/intc/xive.c
> Audio
>     audio/audio.c
>     hw/audio/intel-hda.c
> block
>     block.c
>     block/backup.c
>     block/block-backend.c
>     block/commit.c
>     block/crypto.c
>     block/dirty-bitmap.c
>     block/io.c
>     block/mirror.c
>     block/qapi.c
>     block/snapshot.c
>     block/throttle-groups.c
>     block/throttle.c
>     block/vxhs.c
>     blockdev.c
>     blockjob.c
>     hw/block/onenand.c
>     job.c
> scsi
>     scsi/pr-manager-helper.c
> chardev
>     chardev/char-socket.c
>     chardev/char.c
>     chardev/spice.c
> cmdline
>     util/qemu-option.c
> Dump
>     dump/dump.c
>     dump/win_dump.c
> Memory API
>     memory.c
> SPICE
>     hw/display/qxl.c
> Graphics
>     ui/input-barrier.c
>     ui/input.c
>     ui/vnc.c
> Main loop
>     util/main-loop.c
>     vl.c
> Human Monitor (HMP)
>     monitor/misc.c
> net
>     net/can/can_host.c
>     net/dump.c
>     net/filter-buffer.c
>     net/filter.c
>     net/net.c
>     net/netmap.c
>     net/tap.c
> hostmem
>     backends/hostmem-file.c
>     backends/hostmem-memfd.c
>     backends/hostmem.c
> cryptodev
>     backends/cryptodev-vhost-user.c
>     backends/cryptodev.c
> QAPI
>     qapi/qapi-visit-core.c
>     qapi/qmp-dispatch.c
>     qapi/string-input-visitor.c
> qga
>     qga/commands-posix.c
> QOM
>     hw/core/qdev-properties-system.c
>     hw/core/qdev-properties.c
>     hw/core/qdev.c
>     qdev-monitor.c
>     qom/object.c
>     qom/object_interfaces.c
>     qom/qom-qobject.c
> QMP
>     monitor/qmp-cmds.c
> SLIRP
>     net/slirp.c
> Tracing
>     trace/qmp.c
> TPM
>     hw/tpm/tpm_util.c
>     tpm.c
> Migration
>     migration/migration.c
>     migration/ram.c
>     migration/rdma.c
>     migration/savevm.c
>     migration/socket.c
> Cryptography
>     crypto/block-luks.c
>     crypto/secret.c
>     crypto/tlssession.c
> I/O Channels
>     io/dns-resolver.c
>     io/net-listener.c
> Sockets
>     util/qemu-sockets.c
> colo
>     migration/colo.c
> Record/replay
>     block/blkreplay.c
> VMDK
>     block/vmdk.c
> RBD
>     block/rbd.c
> Sheepdog
>     block/sheepdog.c
> VHDX
>     block/vhdx-log.c
>     block/vhdx.c
> VDI
>     block/vdi.c
> iSCSI
>     block/iscsi.c
> nbd
>     include/block/nbd.h
>     block/nbd.c
>     nbd/client.c
>     nbd/server.c
> NFS
>     block/nfs.c
> SSH
>     block/ssh.c
> CURL
>     block/curl.c
> GLUSTER
>     block/gluster.c
> NVMe Block Driver
>     block/nvme.c
> Bootdevice
>     bootdevice.c
> Quorum
>     block/quorum.c
> blklogwrites
>     block/blklogwrites.c
> blkverify
>     block/blkverify.c
> parallels
>     block/parallels.c
> qed
>     block/qed.c
> raw
>     block/file-posix.c
>     block/file-win32.c
>     block/raw-format.c
> qcow2
>     block/qcow2-bitmap.c
>     block/qcow2.c
> qcow
>     block/qcow.c
> blkdebug
>     block/blkdebug.c
> vpc
>     block/vpc.c
> vvfat
>     block/vvfat.c
> Replication
>     block/replication.c
>     replication.c
> PVRDMA
>     hw/rdma/vmw/pvrdma_main.c
> hw/core/bus.c
>     hw/core/bus.c
> hw/cpu/core.c
>     hw/cpu/core.c
> hw/sd/ssi-sd.c
>     hw/sd/ssi-sd.c
> iothread.c
>     iothread.c
> memory_mapping.c
>     memory_mapping.c
> target/tilegx/cpu.c
>     target/tilegx/cpu.c
> tests/test-image-locking.c
>     tests/test-image-locking.c
> util/qemu-config.c
>     util/qemu-config.c
> 
> 
> Vladimir Sementsov-Ogievskiy (126):
>    hw/core/loader-fit: fix freeing errp in fit_load_fdt
>    net/net: Clean up variable shadowing in net_client_init()
>    error: rename errp to errp_in where it is IN-argument
>    hmp: drop Error pointer indirection in hmp_handle_error
>    vnc: drop Error pointer indirection in vnc_client_io_error
>    qdev-monitor: well form error hint helpers
>    nbd: well form nbd_iter_channel_error errp handler
>    ppc: well form kvmppc_hint_smt_possible error hint helper
>    9pfs: well form error hint helpers
>    hw/core/qdev: cleanup Error ** variables
>    block/snapshot: rename Error ** parameter to more common errp
>    hw/i386/amd_iommu: rename Error ** parameter to more common errp
>    qga: rename Error ** parameter to more common errp
>    monitor/qmp-cmds: rename Error ** parameter to more common errp
>    hw/s390x: rename Error ** parameter to more common errp
>    hw/sd: rename Error ** parameter to more common errp
>    hw/tpm: rename Error ** parameter to more common errp
>    hw/usb: rename Error ** parameter to more common errp
>    include/block/snapshot.h: rename Error ** parameter to more common
>      errp
>    include/qom/object.h: rename Error ** parameter to more common errp
>    qapi/error: add (Error **errp) cleaning APIs
>    backends/cryptodev: drop local_err from cryptodev_backend_complete()
>    hw/vfio/ap: drop local_err from vfio_ap_realize
>    error: auto propagated local_err
>    scripts: add coccinelle script to use auto propagated errp
>    python: add commit-per-subsystem.py
>    misc: introduce ERRP_AUTO_PROPAGATE
>    s390x: introduce ERRP_AUTO_PROPAGATE
>    tcg: introduce ERRP_AUTO_PROPAGATE
>    kvm: introduce ERRP_AUTO_PROPAGATE
>    xen: introduce ERRP_AUTO_PROPAGATE
>    Hosts: introduce ERRP_AUTO_PROPAGATE
>    ARM Machines: introduce ERRP_AUTO_PROPAGATE
>    MIPS Machines: introduce ERRP_AUTO_PROPAGATE
>    PowerPC Machines: introduce ERRP_AUTO_PROPAGATE
>    SPARC Machines: introduce ERRP_AUTO_PROPAGATE
>    S390 Machines: introduce ERRP_AUTO_PROPAGATE
>    X86 Machines: introduce ERRP_AUTO_PROPAGATE
>    IDE: introduce ERRP_AUTO_PROPAGATE
>    Floppy: introduce ERRP_AUTO_PROPAGATE
>    IPack: introduce ERRP_AUTO_PROPAGATE
>    PCI: introduce ERRP_AUTO_PROPAGATE
>    ACPI/SMBIOS: introduce ERRP_AUTO_PROPAGATE
>    Network devices: introduce ERRP_AUTO_PROPAGATE
>    pflash: introduce ERRP_AUTO_PROPAGATE
>    SCSI: introduce ERRP_AUTO_PROPAGATE
>    SD (Secure Card): introduce ERRP_AUTO_PROPAGATE
>    USB: introduce ERRP_AUTO_PROPAGATE
>    USB (serial adapter): introduce ERRP_AUTO_PROPAGATE
>    VFIO: introduce ERRP_AUTO_PROPAGATE
>    vfio-ccw: introduce ERRP_AUTO_PROPAGATE
>    vhost: introduce ERRP_AUTO_PROPAGATE
>    virtio: introduce ERRP_AUTO_PROPAGATE
>    virtio-9p: introduce ERRP_AUTO_PROPAGATE
>    virtio-blk: introduce ERRP_AUTO_PROPAGATE
>    virtio-ccw: introduce ERRP_AUTO_PROPAGATE
>    virtio-input: introduce ERRP_AUTO_PROPAGATE
>    virtio-serial: introduce ERRP_AUTO_PROPAGATE
>    virtio-rng: introduce ERRP_AUTO_PROPAGATE
>    megasas: introduce ERRP_AUTO_PROPAGATE
>    NVDIMM: introduce ERRP_AUTO_PROPAGATE
>    eepro100: introduce ERRP_AUTO_PROPAGATE
>    virtio-gpu: introduce ERRP_AUTO_PROPAGATE
>    fw_cfg: introduce ERRP_AUTO_PROPAGATE
>    XIVE: introduce ERRP_AUTO_PROPAGATE
>    Audio: introduce ERRP_AUTO_PROPAGATE
>    block: introduce ERRP_AUTO_PROPAGATE
>    scsi: introduce ERRP_AUTO_PROPAGATE
>    chardev: introduce ERRP_AUTO_PROPAGATE
>    cmdline: introduce ERRP_AUTO_PROPAGATE
>    Dump: introduce ERRP_AUTO_PROPAGATE
>    Memory API: introduce ERRP_AUTO_PROPAGATE
>    SPICE: introduce ERRP_AUTO_PROPAGATE
>    Graphics: introduce ERRP_AUTO_PROPAGATE
>    Main loop: introduce ERRP_AUTO_PROPAGATE
>    Human Monitor (HMP): introduce ERRP_AUTO_PROPAGATE
>    net: introduce ERRP_AUTO_PROPAGATE
>    hostmem: introduce ERRP_AUTO_PROPAGATE
>    cryptodev: introduce ERRP_AUTO_PROPAGATE
>    QAPI: introduce ERRP_AUTO_PROPAGATE
>    qga: introduce ERRP_AUTO_PROPAGATE
>    QOM: introduce ERRP_AUTO_PROPAGATE
>    QMP: introduce ERRP_AUTO_PROPAGATE
>    SLIRP: introduce ERRP_AUTO_PROPAGATE
>    Tracing: introduce ERRP_AUTO_PROPAGATE
>    TPM: introduce ERRP_AUTO_PROPAGATE
>    Migration: introduce ERRP_AUTO_PROPAGATE
>    Cryptography: introduce ERRP_AUTO_PROPAGATE
>    I/O Channels: introduce ERRP_AUTO_PROPAGATE
>    Sockets: introduce ERRP_AUTO_PROPAGATE
>    colo: introduce ERRP_AUTO_PROPAGATE
>    Record/replay: introduce ERRP_AUTO_PROPAGATE
>    VMDK: introduce ERRP_AUTO_PROPAGATE
>    RBD: introduce ERRP_AUTO_PROPAGATE
>    Sheepdog: introduce ERRP_AUTO_PROPAGATE
>    VHDX: introduce ERRP_AUTO_PROPAGATE
>    VDI: introduce ERRP_AUTO_PROPAGATE
>    iSCSI: introduce ERRP_AUTO_PROPAGATE
>    nbd: introduce ERRP_AUTO_PROPAGATE
>    NFS: introduce ERRP_AUTO_PROPAGATE
>    SSH: introduce ERRP_AUTO_PROPAGATE
>    CURL: introduce ERRP_AUTO_PROPAGATE
>    GLUSTER: introduce ERRP_AUTO_PROPAGATE
>    NVMe Block Driver: introduce ERRP_AUTO_PROPAGATE
>    Bootdevice: introduce ERRP_AUTO_PROPAGATE
>    Quorum: introduce ERRP_AUTO_PROPAGATE
>    blklogwrites: introduce ERRP_AUTO_PROPAGATE
>    blkverify: introduce ERRP_AUTO_PROPAGATE
>    parallels: introduce ERRP_AUTO_PROPAGATE
>    qed: introduce ERRP_AUTO_PROPAGATE
>    raw: introduce ERRP_AUTO_PROPAGATE
>    qcow2: introduce ERRP_AUTO_PROPAGATE
>    qcow: introduce ERRP_AUTO_PROPAGATE
>    blkdebug: introduce ERRP_AUTO_PROPAGATE
>    vpc: introduce ERRP_AUTO_PROPAGATE
>    vvfat: introduce ERRP_AUTO_PROPAGATE
>    Replication: introduce ERRP_AUTO_PROPAGATE
>    PVRDMA: introduce ERRP_AUTO_PROPAGATE
>    hw/core/bus.c: introduce ERRP_AUTO_PROPAGATE
>    hw/cpu/core.c: introduce ERRP_AUTO_PROPAGATE
>    hw/sd/ssi-sd.c: introduce ERRP_AUTO_PROPAGATE
>    iothread.c: introduce ERRP_AUTO_PROPAGATE
>    memory_mapping.c: introduce ERRP_AUTO_PROPAGATE
>    target/tilegx/cpu.c: introduce ERRP_AUTO_PROPAGATE
>    tests/test-image-locking.c: introduce ERRP_AUTO_PROPAGATE
>    util/qemu-config.c: introduce ERRP_AUTO_PROPAGATE
> 
> 
> CC: Gerd Hoffmann <kraxel@redhat.com>
> CC: "Gonglei (Arei)" <arei.gonglei@huawei.com>
> CC: Eduardo Habkost <ehabkost@redhat.com>
> CC: Igor Mammedov <imammedo@redhat.com>
> CC: Laurent Vivier <lvivier@redhat.com>
> CC: Amit Shah <amit@kernel.org>
> CC: Kevin Wolf <kwolf@redhat.com>
> CC: Max Reitz <mreitz@redhat.com>
> CC: John Snow <jsnow@redhat.com>
> CC: Ari Sundholm <ari@tuxera.com>
> CC: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>
> CC: Paolo Bonzini <pbonzini@redhat.com>
> CC: Stefan Hajnoczi <stefanha@redhat.com>
> CC: Fam Zheng <fam@euphon.net>
> CC: Stefan Weil <sw@weilnetz.de>
> CC: Ronnie Sahlberg <ronniesahlberg@gmail.com>
> CC: Peter Lieven <pl@kamp.de>
> CC: Eric Blake <eblake@redhat.com>
> CC: "Denis V. Lunev" <den@openvz.org>
> CC: Markus Armbruster <armbru@redhat.com>
> CC: Alberto Garcia <berto@igalia.com>
> CC: Jason Dillaman <dillaman@redhat.com>
> CC: Wen Congyang <wencongyang2@huawei.com>
> CC: Xie Changlong <xiechanglong.d@gmail.com>
> CC: Liu Yuan <namei.unix@gmail.com>
> CC: "Richard W.M. Jones" <rjones@redhat.com>
> CC: Jeff Cody <codyprime@gmail.com>
> CC: "Marc-André Lureau" <marcandre.lureau@redhat.com>
> CC: "Daniel P. Berrangé" <berrange@redhat.com>
> CC: Richard Henderson <rth@twiddle.net>
> CC: Greg Kurz <groug@kaod.org>
> CC: "Michael S. Tsirkin" <mst@redhat.com>
> CC: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
> CC: Beniamino Galvani <b.galvani@gmail.com>
> CC: Peter Maydell <peter.maydell@linaro.org>
> CC: "Cédric Le Goater" <clg@kaod.org>
> CC: Andrew Jeffery <andrew@aj.id.au>
> CC: Joel Stanley <joel@jms.id.au>
> CC: Andrew Baumann <Andrew.Baumann@microsoft.com>
> CC: "Philippe Mathieu-Daudé" <philmd@redhat.com>
> CC: Antony Pavlov <antonynpavlov@gmail.com>
> CC: Jean-Christophe Dubois <jcd@tribudubois.net>
> CC: Peter Chubb <peter.chubb@nicta.com.au>
> CC: Subbaraya Sundeep <sundeep.lkml@gmail.com>
> CC: Eric Auger <eric.auger@redhat.com>
> CC: Alistair Francis <alistair@alistair23.me>
> CC: "Edgar E. Iglesias" <edgar.iglesias@gmail.com>
> CC: Stefano Stabellini <sstabellini@kernel.org>
> CC: Anthony Perard <anthony.perard@citrix.com>
> CC: Paul Durrant <paul@xen.org>
> CC: Paul Burton <pburton@wavecomp.com>
> CC: Aleksandar Rikalo <arikalo@wavecomp.com>
> CC: Chris Wulff <crwulff@gmail.com>
> CC: Marek Vasut <marex@denx.de>
> CC: David Gibson <david@gibson.dropbear.id.au>
> CC: Cornelia Huck <cohuck@redhat.com>
> CC: Halil Pasic <pasic@linux.ibm.com>
> CC: Christian Borntraeger <borntraeger@de.ibm.com>
> CC: "Hervé Poussineau" <hpoussin@reactos.org>
> CC: Xiao Guangrong <xiaoguangrong.eric@gmail.com>
> CC: Aurelien Jarno <aurelien@aurel32.net>
> CC: Aleksandar Markovic <amarkovic@wavecomp.com>
> CC: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
> CC: Jason Wang <jasowang@redhat.com>
> CC: Laszlo Ersek <lersek@redhat.com>
> CC: Yuval Shaia <yuval.shaia@oracle.com>
> CC: Palmer Dabbelt <palmer@sifive.com>
> CC: Sagar Karandikar <sagark@eecs.berkeley.edu>
> CC: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
> CC: David Hildenbrand <david@redhat.com>
> CC: Thomas Huth <thuth@redhat.com>
> CC: Eric Farman <farman@linux.ibm.com>
> CC: Matthew Rosato <mjrosato@linux.ibm.com>
> CC: Hannes Reinecke <hare@suse.com>
> CC: Michael Walle <michael@walle.cc>
> CC: Artyom Tarasenko <atar4qemu@gmail.com>
> CC: Stefan Berger <stefanb@linux.ibm.com>
> CC: Samuel Thibault <samuel.thibault@ens-lyon.org>
> CC: Alex Williamson <alex.williamson@redhat.com>
> CC: Tony Krowiak <akrowiak@linux.ibm.com>
> CC: Pierre Morel <pmorel@linux.ibm.com>
> CC: Michael Roth <mdroth@linux.vnet.ibm.com>
> CC: Hailiang Zhang <zhang.zhanghailiang@huawei.com>
> CC: Juan Quintela <quintela@redhat.com>
> CC: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
> CC: Luigi Rizzo <rizzo@iet.unipi.it>
> CC: Giuseppe Lettieri <g.lettieri@iet.unipi.it>
> CC: Vincenzo Maffione <v.maffione@gmail.com>
> CC: Jan Kiszka <jan.kiszka@siemens.com>
> CC: Anthony Green <green@moxielogic.com>
> CC: Stafford Horne <shorne@gmail.com>
> CC: Guan Xuetao <gxt@mprc.pku.edu.cn>
> CC: Max Filippov <jcmvbkbc@gmail.com>
> CC: qemu-block@nongnu.org
> CC: integration@gluster.org
> CC: sheepdog@lists.wpkg.org
> CC: qemu-arm@nongnu.org
> CC: xen-devel@lists.xenproject.org
> CC: qemu-ppc@nongnu.org
> CC: qemu-s390x@nongnu.org
> CC: qemu-riscv@nongnu.org
> 
>   include/block/nbd.h                           |   1 +
>   include/block/snapshot.h                      |   2 +-
>   include/monitor/hmp.h                         |   2 +-
>   include/qapi/error.h                          |  69 ++++-
>   include/qom/object.h                          |   4 +-
>   target/ppc/kvm_ppc.h                          |   4 +-
>   ui/vnc.h                                      |   2 +-
>   audio/audio.c                                 |  12 +-
>   backends/cryptodev-vhost-user.c               |  10 +-
>   backends/cryptodev.c                          |  25 +-
>   backends/hostmem-file.c                       |  21 +-
>   backends/hostmem-memfd.c                      |  18 +-
>   backends/hostmem.c                            |  41 ++-
>   backends/rng.c                                |   7 +-
>   block.c                                       | 225 +++++++---------
>   block/backup.c                                |   1 +
>   block/blkdebug.c                              |  36 ++-
>   block/blklogwrites.c                          |  22 +-
>   block/blkreplay.c                             |   7 +-
>   block/blkverify.c                             |  17 +-
>   block/block-backend.c                         |  19 +-
>   block/commit.c                                |   7 +-
>   block/crypto.c                                |  14 +-
>   block/curl.c                                  |   7 +-
>   block/dirty-bitmap.c                          |   1 +
>   block/file-posix.c                            |  79 +++---
>   block/file-win32.c                            |  29 +-
>   block/gluster.c                               |  69 +++--
>   block/io.c                                    |  12 +-
>   block/iscsi.c                                 |  36 ++-
>   block/mirror.c                                |  19 +-
>   block/nbd.c                                   |  59 ++--
>   block/nfs.c                                   |   7 +-
>   block/nvme.c                                  |  19 +-
>   block/parallels.c                             |  30 +--
>   block/qapi.c                                  |  26 +-
>   block/qcow.c                                  |  17 +-
>   block/qcow2-bitmap.c                          |   9 +-
>   block/qcow2.c                                 |  98 +++----
>   block/qed.c                                   |  18 +-
>   block/quorum.c                                |  23 +-
>   block/raw-format.c                            |   7 +-
>   block/rbd.c                                   |  29 +-
>   block/replication.c                           |  40 ++-
>   block/sheepdog.c                              |  73 +++--
>   block/snapshot.c                              |  20 +-
>   block/ssh.c                                   |  12 +-
>   block/throttle-groups.c                       |  24 +-
>   block/throttle.c                              |   7 +-
>   block/vdi.c                                   |  15 +-
>   block/vhdx-log.c                              |   1 +
>   block/vhdx.c                                  |  22 +-
>   block/vmdk.c                                  |  41 ++-
>   block/vpc.c                                   |  28 +-
>   block/vvfat.c                                 |  12 +-
>   block/vxhs.c                                  |  23 +-
>   blockdev.c                                    | 252 ++++++++----------
>   blockjob.c                                    |   8 +-
>   bootdevice.c                                  |  31 +--
>   chardev/char-socket.c                         |   7 +-
>   chardev/char.c                                |  20 +-
>   chardev/spice.c                               |   1 +
>   crypto/block-luks.c                           |  56 ++--
>   crypto/secret.c                               |  17 +-
>   crypto/tlssession.c                           |   7 +-
>   dump/dump-hmp-cmds.c                          |   4 +-
>   dump/dump.c                                   | 151 +++++------
>   dump/win_dump.c                               |  29 +-
>   exec.c                                        |  21 +-
>   hw/9pfs/9p-local.c                            |  12 +-
>   hw/9pfs/9p-proxy.c                            |   5 +-
>   hw/9pfs/9p.c                                  |   1 +
>   hw/acpi/core.c                                |  18 +-
>   hw/acpi/cpu_hotplug.c                         |   2 +-
>   hw/acpi/ich9.c                                |  30 +--
>   hw/acpi/memory_hotplug.c                      |   7 +-
>   hw/arm/allwinner-a10.c                        |  27 +-
>   hw/arm/armv7m.c                               |  52 ++--
>   hw/arm/aspeed_soc.c                           |   1 +
>   hw/arm/bcm2835_peripherals.c                  |  85 +++---
>   hw/arm/bcm2836.c                              |  41 ++-
>   hw/arm/digic.c                                |  22 +-
>   hw/arm/fsl-imx25.c                            |  62 ++---
>   hw/arm/fsl-imx31.c                            |  57 ++--
>   hw/arm/fsl-imx6.c                             |  81 +++---
>   hw/arm/integratorcp.c                         |   7 +-
>   hw/arm/msf2-soc.c                             |  22 +-
>   hw/arm/nrf51_soc.c                            |  47 ++--
>   hw/arm/smmu-common.c                          |   7 +-
>   hw/arm/smmuv3.c                               |   7 +-
>   hw/arm/stm32f205_soc.c                        |  39 ++-
>   hw/arm/virt.c                                 |   2 +
>   hw/arm/xlnx-versal-virt.c                     |   7 +-
>   hw/arm/xlnx-zynqmp.c                          |  86 +++---
>   hw/audio/intel-hda.c                          |  13 +-
>   hw/block/dataplane/virtio-blk.c               |   1 +
>   hw/block/dataplane/xen-block.c                |  17 +-
>   hw/block/fdc.c                                |  19 +-
>   hw/block/onenand.c                            |   7 +-
>   hw/block/pflash_cfi01.c                       |   7 +-
>   hw/block/pflash_cfi02.c                       |   7 +-
>   hw/block/vhost-user-blk.c                     |   6 +-
>   hw/block/virtio-blk.c                         |   7 +-
>   hw/block/xen-block.c                          | 119 ++++-----
>   hw/char/debugcon.c                            |   7 +-
>   hw/char/serial-pci-multi.c                    |   7 +-
>   hw/char/serial-pci.c                          |   7 +-
>   hw/char/virtio-serial-bus.c                   |   7 +-
>   hw/core/bus.c                                 |  15 +-
>   hw/core/loader-fit.c                          |   7 +-
>   hw/core/machine-hmp-cmds.c                    |   6 +-
>   hw/core/machine.c                             |  21 +-
>   hw/core/numa.c                                |  51 ++--
>   hw/core/qdev-properties-system.c              |  28 +-
>   hw/core/qdev-properties.c                     |  89 +++----
>   hw/core/qdev.c                                |  58 ++--
>   hw/cpu/a15mpcore.c                            |   7 +-
>   hw/cpu/a9mpcore.c                             |  27 +-
>   hw/cpu/arm11mpcore.c                          |  22 +-
>   hw/cpu/core.c                                 |  14 +-
>   hw/cpu/realview_mpcore.c                      |  12 +-
>   hw/display/bcm2835_fb.c                       |   6 +-
>   hw/display/qxl.c                              |   7 +-
>   hw/display/virtio-gpu-base.c                  |   7 +-
>   hw/display/virtio-gpu-pci.c                   |   7 +-
>   hw/display/virtio-vga.c                       |   7 +-
>   hw/dma/bcm2835_dma.c                          |   6 +-
>   hw/dma/xilinx_axidma.c                        |  22 +-
>   hw/gpio/aspeed_gpio.c                         |   7 +-
>   hw/gpio/bcm2835_gpio.c                        |  10 +-
>   hw/i386/amd_iommu.c                           |  14 +-
>   hw/i386/pc.c                                  | 120 ++++-----
>   hw/ide/qdev.c                                 |  16 +-
>   hw/input/virtio-input.c                       |  14 +-
>   hw/intc/apic_common.c                         |   7 +-
>   hw/intc/arm_gic.c                             |   7 +-
>   hw/intc/arm_gic_kvm.c                         |  12 +-
>   hw/intc/arm_gicv3.c                           |  12 +-
>   hw/intc/arm_gicv3_its_kvm.c                   |   7 +-
>   hw/intc/arm_gicv3_kvm.c                       |  17 +-
>   hw/intc/armv7m_nvic.c                         |  12 +-
>   hw/intc/nios2_iic.c                           |   6 +-
>   hw/intc/pnv_xive.c                            |  15 +-
>   hw/intc/realview_gic.c                        |   7 +-
>   hw/intc/s390_flic_kvm.c                       |   9 +-
>   hw/intc/spapr_xive.c                          |  12 +-
>   hw/intc/spapr_xive_kvm.c                      |  55 ++--
>   hw/intc/xics.c                                |  28 +-
>   hw/intc/xics_kvm.c                            |  30 +--
>   hw/intc/xics_pnv.c                            |   7 +-
>   hw/intc/xics_spapr.c                          |   7 +-
>   hw/intc/xive.c                                |  27 +-
>   hw/ipack/ipack.c                              |   5 +-
>   hw/isa/pc87312.c                              |   7 +-
>   hw/mem/memory-device.c                        |  20 +-
>   hw/mem/nvdimm.c                               |  25 +-
>   hw/mem/pc-dimm.c                              |  23 +-
>   hw/microblaze/xlnx-zynqmp-pmu.c               |  12 +-
>   hw/mips/cps.c                                 |  46 ++--
>   hw/misc/bcm2835_mbox.c                        |   6 +-
>   hw/misc/bcm2835_property.c                    |  10 +-
>   hw/misc/ivshmem.c                             |  37 ++-
>   hw/misc/macio/macio.c                         |  68 ++---
>   hw/misc/msf2-sysreg.c                         |   1 +
>   hw/misc/tmp105.c                              |   7 +-
>   hw/misc/tmp421.c                              |   7 +-
>   hw/net/dp8393x.c                              |   7 +-
>   hw/net/eepro100.c                             |   7 +-
>   hw/net/ne2000-isa.c                           |  17 +-
>   hw/net/xilinx_axienet.c                       |  22 +-
>   hw/nvram/fw_cfg.c                             |  14 +-
>   hw/nvram/nrf51_nvm.c                          |   7 +-
>   hw/pci-bridge/gen_pcie_root_port.c            |   7 +-
>   hw/pci-bridge/pci_bridge_dev.c                |  13 +-
>   hw/pci-bridge/pci_expander_bridge.c           |   7 +-
>   hw/pci-bridge/pcie_pci_bridge.c               |   8 +-
>   hw/pci-bridge/pcie_root_port.c                |   1 +
>   hw/pci-host/piix.c                            |   7 +-
>   hw/pci/pci.c                                  |  19 +-
>   hw/pci/pcie.c                                 |   7 +-
>   hw/pci/shpc.c                                 |  14 +-
>   hw/ppc/e500.c                                 |   7 +-
>   hw/ppc/mac_newworld.c                         |   1 +
>   hw/ppc/pnv.c                                  | 109 ++++----
>   hw/ppc/pnv_core.c                             |  23 +-
>   hw/ppc/pnv_homer.c                            |   5 +-
>   hw/ppc/pnv_lpc.c                              |  26 +-
>   hw/ppc/pnv_occ.c                              |   5 +-
>   hw/ppc/pnv_psi.c                              |  23 +-
>   hw/ppc/spapr.c                                | 133 ++++-----
>   hw/ppc/spapr_caps.c                           |  57 ++--
>   hw/ppc/spapr_cpu_core.c                       |  36 ++-
>   hw/ppc/spapr_drc.c                            |  48 ++--
>   hw/ppc/spapr_irq.c                            |  98 +++----
>   hw/ppc/spapr_pci.c                            |  97 +++----
>   hw/ppc/spapr_vio.c                            |  12 +-
>   hw/rdma/vmw/pvrdma_main.c                     |   1 +
>   hw/riscv/riscv_hart.c                         |   7 +-
>   hw/riscv/sifive_e.c                           |   7 +-
>   hw/riscv/sifive_u.c                           |  11 +-
>   hw/s390x/3270-ccw.c                           |  13 +-
>   hw/s390x/css-bridge.c                         |   7 +-
>   hw/s390x/css.c                                |   7 +-
>   hw/s390x/event-facility.c                     |   2 +-
>   hw/s390x/ipl.c                                |  24 +-
>   hw/s390x/s390-ccw.c                           |  19 +-
>   hw/s390x/s390-pci-bus.c                       |  37 ++-
>   hw/s390x/s390-skeys.c                         |   7 +-
>   hw/s390x/s390-stattrib.c                      |   3 +-
>   hw/s390x/s390-virtio-ccw.c                    |  11 +-
>   hw/s390x/sclp.c                               |  15 +-
>   hw/s390x/tod-kvm.c                            |  14 +-
>   hw/s390x/virtio-ccw-crypto.c                  |   7 +-
>   hw/s390x/virtio-ccw-rng.c                     |   7 +-
>   hw/s390x/virtio-ccw.c                         |  13 +-
>   hw/scsi/esp-pci.c                             |   7 +-
>   hw/scsi/megasas.c                             |  11 +-
>   hw/scsi/mptsas.c                              |  13 +-
>   hw/scsi/scsi-bus.c                            |  24 +-
>   hw/scsi/scsi-disk.c                           |   8 +-
>   hw/scsi/scsi-generic.c                        |   1 +
>   hw/scsi/vhost-scsi.c                          |  12 +-
>   hw/scsi/vhost-user-scsi.c                     |   7 +-
>   hw/scsi/virtio-scsi.c                         |   7 +-
>   hw/sd/milkymist-memcard.c                     |  11 +-
>   hw/sd/sdhci-pci.c                             |   7 +-
>   hw/sd/sdhci.c                                 |  23 +-
>   hw/sd/ssi-sd.c                                |  14 +-
>   hw/smbios/smbios.c                            |  42 ++-
>   hw/sparc/sun4m.c                              |  21 +-
>   hw/sparc64/sun4u.c                            |   7 +-
>   hw/timer/aspeed_timer.c                       |   6 +-
>   hw/tpm/tpm_emulator.c                         |   8 +-
>   hw/tpm/tpm_util.c                             |   7 +-
>   hw/usb/bus.c                                  |  37 ++-
>   hw/usb/ccid-card-emulated.c                   |   1 +
>   hw/usb/dev-network.c                          |   2 +-
>   hw/usb/dev-serial.c                           |   7 +-
>   hw/usb/dev-smartcard-reader.c                 |  14 +-
>   hw/usb/dev-storage.c                          |  17 +-
>   hw/usb/hcd-ohci-pci.c                         |   7 +-
>   hw/usb/hcd-ohci.c                             |  14 +-
>   hw/usb/hcd-uhci.c                             |   7 +-
>   hw/usb/hcd-xhci.c                             |  13 +-
>   hw/vfio/ap.c                                  |  16 +-
>   hw/vfio/ccw.c                                 |  24 +-
>   hw/vfio/common.c                              |   3 +
>   hw/vfio/pci-quirks.c                          |   8 +-
>   hw/vfio/pci.c                                 |  42 ++-
>   hw/vfio/platform.c                            |   1 +
>   hw/virtio/vhost-vsock.c                       |   1 +
>   hw/virtio/virtio-balloon.c                    |  35 ++-
>   hw/virtio/virtio-bus.c                        |  17 +-
>   hw/virtio/virtio-pci.c                        |   2 +
>   hw/virtio/virtio-rng-pci.c                    |   7 +-
>   hw/virtio/virtio-rng.c                        |   7 +-
>   hw/virtio/virtio.c                            |  19 +-
>   hw/watchdog/wdt_aspeed.c                      |   5 +-
>   hw/xen/xen-backend.c                          |   7 +-
>   hw/xen/xen-bus.c                              |  92 +++----
>   hw/xen/xen-host-pci-device.c                  |  27 +-
>   hw/xen/xen_pt.c                               |  25 +-
>   hw/xen/xen_pt_config_init.c                   |  20 +-
>   io/dns-resolver.c                             |   7 +-
>   io/net-listener.c                             |   7 +-
>   iothread.c                                    |  27 +-
>   job.c                                         |   7 +-
>   memory.c                                      |  63 ++---
>   memory_mapping.c                              |   7 +-
>   migration/colo.c                              |  38 ++-
>   migration/migration.c                         |  39 ++-
>   migration/ram.c                               |  13 +-
>   migration/rdma.c                              |  13 +-
>   migration/savevm.c                            |   2 +
>   migration/socket.c                            |  18 +-
>   monitor/hmp-cmds.c                            | 155 ++++++-----
>   monitor/misc.c                                |   9 +-
>   monitor/qmp-cmds.c                            |   9 +-
>   nbd/client.c                                  |   5 +
>   nbd/server.c                                  |   5 +
>   net/can/can_host.c                            |   7 +-
>   net/dump.c                                    |  15 +-
>   net/filter-buffer.c                           |  15 +-
>   net/filter.c                                  |   7 +-
>   net/net.c                                     |  58 ++--
>   net/netmap.c                                  |   7 +-
>   net/slirp.c                                   |   7 +-
>   net/tap.c                                     |  47 ++--
>   qapi/qapi-visit-core.c                        |  56 ++--
>   qapi/qmp-dispatch.c                           |   7 +-
>   qapi/string-input-visitor.c                   |   7 +-
>   qdev-monitor.c                                |  69 +++--
>   qga/commands-posix.c                          | 222 +++++++--------
>   qga/commands-win32.c                          | 141 +++++-----
>   qga/commands.c                                |  12 +-
>   qom/object.c                                  | 246 ++++++++---------
>   qom/object_interfaces.c                       |  27 +-
>   qom/qom-hmp-cmds.c                            |   4 +-
>   qom/qom-qobject.c                             |   7 +-
>   replication.c                                 |  28 +-
>   scsi/pr-manager-helper.c                      |   7 +-
>   target/alpha/cpu.c                            |   7 +-
>   target/arm/cpu.c                              |   7 +-
>   target/arm/cpu64.c                            |  11 +-
>   target/cris/cpu.c                             |   7 +-
>   target/hppa/cpu.c                             |   7 +-
>   target/i386/cpu.c                             | 117 ++++----
>   target/lm32/cpu.c                             |   7 +-
>   target/m68k/cpu.c                             |   7 +-
>   target/microblaze/cpu.c                       |   7 +-
>   target/mips/cpu.c                             |   7 +-
>   target/moxie/cpu.c                            |   7 +-
>   target/nios2/cpu.c                            |   7 +-
>   target/openrisc/cpu.c                         |   7 +-
>   target/ppc/compat.c                           |  20 +-
>   target/ppc/kvm.c                              |  14 +-
>   target/ppc/translate_init.inc.c               |  26 +-
>   target/riscv/cpu.c                            |   7 +-
>   target/s390x/cpu.c                            |  26 +-
>   target/s390x/cpu_models.c                     |   2 +
>   target/sh4/cpu.c                              |   7 +-
>   target/sparc/cpu.c                            |  14 +-
>   target/tilegx/cpu.c                           |   7 +-
>   target/tricore/cpu.c                          |   7 +-
>   target/unicore32/cpu.c                        |   7 +-
>   target/xtensa/cpu.c                           |   7 +-
>   tests/test-image-locking.c                    |   7 +-
>   tpm.c                                         |   7 +-
>   trace/qmp.c                                   |  14 +-
>   ui/input-barrier.c                            |   7 +-
>   ui/input.c                                    |  14 +-
>   ui/vnc.c                                      |  39 ++-
>   util/error.c                                  |  30 +--
>   util/main-loop.c                              |   5 +-
>   util/oslib-posix.c                            |   6 +-
>   util/qemu-config.c                            |  29 +-
>   util/qemu-option.c                            |  59 ++--
>   util/qemu-sockets.c                           |  31 +--
>   vl.c                                          |  14 +-
>   python/commit-per-subsystem.py                | 204 ++++++++++++++
>   scripts/coccinelle/auto-propagated-errp.cocci | 118 ++++++++
>   341 files changed, 3851 insertions(+), 4455 deletions(-)
>   create mode 100755 python/commit-per-subsystem.py
>   create mode 100644 scripts/coccinelle/auto-propagated-errp.cocci
>
Marc-André Lureau Nov. 8, 2019, 6:57 p.m. UTC | #3
Hi

On Fri, Nov 8, 2019 at 7:31 PM Vladimir Sementsov-Ogievskiy
<vsementsov@virtuozzo.com> wrote:
>
> Finally, what is the plan?
>
> Markus what do you think?
>
> Now a lot of patches are reviewed, but a lot of are not.
>
> Is there any hope that all patches will be reviewed? Should I resend the
> whole series, or may be reduce it to reviewed subsystems only?

I don't think we have well established rules for whole-tree cleanups
like this. In the past, several cleanup series got lost.

It will take ages to get every subsystem maintainer to review the
patches. Most likely, since they are quite systematic, there isn't
much to say and it is easy to miss something that has some hidden
ramifications. Perhaps whole-tree cleanups should require at least 2
reviewers to bypass the subsytem maintainer review? But my past
experience with this kind of exercice doesn't encourage me, and
probably I am not the only one.

>
> 11.10.2019 19:03, Vladimir Sementsov-Ogievskiy wrote:
> > Hi all!
> >
> > At the request of Markus: full version of errp propagation. Let's look
> > at it. Cover as much as possible, except inserting macro invocation
> > where it's not necessary.
> >
> > It's huge, and so it's an RFC.
> >
> > In v5 I've added a lot more preparation cleanups:
> > 01-23 are preparation cleanups
> >    01: not changed, keep Eric's r-b
> >    02: improve commit msg [Markus], keep Eric's r-b
> >    03: changed, only error API here, drop r-b
> > 24 is core macro
> >    - improve cover letter, wording and macro code style
> >    - keep Eric's r-b
> > 25-26: automation scripts
> >     - commit-per-subsystem changed a lot. it's a draft, don't bother too
> >       much with it
> >     - coccinelle: add support of error_propagate_prepend
> >
> > 27-126: generated patches
> >
> > ====
> >
> > Here is a proposal of auto propagation for local_err, to not call
> > error_propagate on every exit point, when we deal with local_err.
> >
> > There are also two issues with errp:
> >
> > 1. error_fatal & error_append_hint/error_prepend: user can't see this
> > additional info, because exit() happens in error_setg earlier than info
> > is added. [Reported by Greg Kurz]
> >
> > 2. error_abort & error_propagate: when we wrap
> > error_abort by local_err+error_propagate, resulting coredump will
> > refer to error_propagate and not to the place where error happened.
> > (the macro itself don't fix the issue, but it allows to [3.] drop all
> > local_err+error_propagate pattern, which will definitely fix the issue)
> > [Reported by Kevin Wolf]
> >
> > ====
> >
> > Generated patches split:
> >
> > misc
> >     hw/misc/ivshmem.c
> >     hw/misc/tmp105.c
> >     hw/misc/tmp421.c
> > s390x
> >     hw/intc/s390_flic_kvm.c
> >     hw/s390x/3270-ccw.c
> >     hw/s390x/css-bridge.c
> >     hw/s390x/css.c
> >     hw/s390x/s390-skeys.c
> >     hw/s390x/s390-virtio-ccw.c
> >     hw/s390x/sclp.c
> >     hw/s390x/tod-kvm.c
> >     hw/vfio/ccw.c
> >     target/s390x/cpu.c
> > tcg
> >     exec.c
> >     hw/arm/armv7m.c
> >     hw/arm/smmu-common.c
> >     hw/arm/smmuv3.c
> >     hw/cpu/a15mpcore.c
> >     hw/cpu/a9mpcore.c
> >     hw/cpu/arm11mpcore.c
> >     hw/i386/pc.c
> >     hw/intc/nios2_iic.c
> >     hw/mips/cps.c
> >     hw/riscv/riscv_hart.c
> >     hw/riscv/sifive_e.c
> >     hw/riscv/sifive_u.c
> >     hw/sd/milkymist-memcard.c
> >     target/alpha/cpu.c
> >     target/arm/cpu.c
> >     target/arm/cpu64.c
> >     target/cris/cpu.c
> >     target/hppa/cpu.c
> >     target/i386/cpu.c
> >     target/lm32/cpu.c
> >     target/m68k/cpu.c
> >     target/microblaze/cpu.c
> >     target/mips/cpu.c
> >     target/moxie/cpu.c
> >     target/nios2/cpu.c
> >     target/openrisc/cpu.c
> >     target/ppc/compat.c
> >     target/ppc/translate_init.inc.c
> >     target/riscv/cpu.c
> >     target/sh4/cpu.c
> >     target/sparc/cpu.c
> >     target/tricore/cpu.c
> >     target/unicore32/cpu.c
> >     target/xtensa/cpu.c
> > kvm
> >     target/ppc/kvm.c
> >     target/s390x/cpu_models.c
> > xen
> >     hw/block/dataplane/xen-block.c
> >     hw/block/xen-block.c
> >     hw/xen/xen-backend.c
> >     hw/xen/xen-bus.c
> >     hw/xen/xen-host-pci-device.c
> >     hw/xen/xen_pt.c
> >     hw/xen/xen_pt_config_init.c
> > Hosts
> >     qga/commands-win32.c
> >     util/oslib-posix.c
> > ARM Machines
> >     hw/arm/allwinner-a10.c
> >     hw/arm/aspeed_soc.c
> >     hw/arm/bcm2835_peripherals.c
> >     hw/arm/bcm2836.c
> >     hw/arm/digic.c
> >     hw/arm/fsl-imx25.c
> >     hw/arm/fsl-imx31.c
> >     hw/arm/fsl-imx6.c
> >     hw/arm/integratorcp.c
> >     hw/arm/msf2-soc.c
> >     hw/arm/nrf51_soc.c
> >     hw/arm/stm32f205_soc.c
> >     hw/arm/virt.c
> >     hw/arm/xlnx-versal-virt.c
> >     hw/arm/xlnx-zynqmp.c
> >     hw/cpu/realview_mpcore.c
> >     hw/display/bcm2835_fb.c
> >     hw/dma/bcm2835_dma.c
> >     hw/dma/xilinx_axidma.c
> >     hw/gpio/aspeed_gpio.c
> >     hw/gpio/bcm2835_gpio.c
> >     hw/intc/arm_gic.c
> >     hw/intc/arm_gic_kvm.c
> >     hw/intc/arm_gicv3.c
> >     hw/intc/arm_gicv3_its_kvm.c
> >     hw/intc/arm_gicv3_kvm.c
> >     hw/intc/armv7m_nvic.c
> >     hw/intc/realview_gic.c
> >     hw/microblaze/xlnx-zynqmp-pmu.c
> >     hw/misc/bcm2835_mbox.c
> >     hw/misc/bcm2835_property.c
> >     hw/misc/msf2-sysreg.c
> >     hw/net/xilinx_axienet.c
> >     hw/nvram/nrf51_nvm.c
> >     hw/timer/aspeed_timer.c
> >     hw/watchdog/wdt_aspeed.c
> > MIPS Machines
> >     hw/core/loader-fit.c
> > PowerPC Machines
> >     hw/intc/pnv_xive.c
> >     hw/intc/xics.c
> >     hw/intc/xics_kvm.c
> >     hw/intc/xics_pnv.c
> >     hw/intc/xics_spapr.c
> >     hw/isa/pc87312.c
> >     hw/misc/macio/macio.c
> >     hw/ppc/e500.c
> >     hw/ppc/mac_newworld.c
> >     hw/ppc/pnv.c
> >     hw/ppc/pnv_core.c
> >     hw/ppc/pnv_homer.c
> >     hw/ppc/pnv_lpc.c
> >     hw/ppc/pnv_occ.c
> >     hw/ppc/pnv_psi.c
> >     hw/ppc/spapr.c
> >     hw/ppc/spapr_caps.c
> >     hw/ppc/spapr_cpu_core.c
> >     hw/ppc/spapr_drc.c
> >     hw/ppc/spapr_irq.c
> >     hw/ppc/spapr_pci.c
> >     hw/ppc/spapr_vio.c
> > SPARC Machines
> >     hw/sparc/sun4m.c
> >     hw/sparc64/sun4u.c
> > S390 Machines
> >     hw/s390x/ipl.c
> >     hw/s390x/s390-pci-bus.c
> > X86 Machines
> >     hw/acpi/ich9.c
> >     hw/char/debugcon.c
> >     hw/char/serial-pci-multi.c
> >     hw/char/serial-pci.c
> >     hw/core/machine.c
> >     hw/core/numa.c
> >     hw/intc/apic_common.c
> >     hw/pci-host/piix.c
> > IDE
> >     hw/ide/qdev.c
> > Floppy
> >     hw/block/fdc.c
> > IPack
> >     hw/ipack/ipack.c
> > PCI
> >     hw/pci-bridge/gen_pcie_root_port.c
> >     hw/pci-bridge/pci_bridge_dev.c
> >     hw/pci-bridge/pci_expander_bridge.c
> >     hw/pci-bridge/pcie_pci_bridge.c
> >     hw/pci-bridge/pcie_root_port.c
> >     hw/pci/pci.c
> >     hw/pci/pcie.c
> >     hw/pci/shpc.c
> > ACPI/SMBIOS
> >     hw/acpi/core.c
> >     hw/acpi/cpu_hotplug.c
> >     hw/acpi/memory_hotplug.c
> >     hw/mem/memory-device.c
> >     hw/mem/pc-dimm.c
> >     hw/smbios/smbios.c
> > Network devices
> >     hw/net/dp8393x.c
> >     hw/net/ne2000-isa.c
> > pflash
> >     hw/block/pflash_cfi01.c
> >     hw/block/pflash_cfi02.c
> > SCSI
> >     hw/scsi/esp-pci.c
> >     hw/scsi/mptsas.c
> >     hw/scsi/scsi-bus.c
> >     hw/scsi/scsi-disk.c
> >     hw/scsi/scsi-generic.c
> >     hw/scsi/virtio-scsi.c
> > SD (Secure Card)
> >     hw/sd/sdhci-pci.c
> >     hw/sd/sdhci.c
> > USB
> >     hw/usb/bus.c
> >     hw/usb/ccid-card-emulated.c
> >     hw/usb/dev-smartcard-reader.c
> >     hw/usb/dev-storage.c
> >     hw/usb/hcd-ohci-pci.c
> >     hw/usb/hcd-ohci.c
> >     hw/usb/hcd-uhci.c
> >     hw/usb/hcd-xhci.c
> > USB (serial adapter)
> >     hw/usb/dev-serial.c
> > VFIO
> >     hw/vfio/common.c
> >     hw/vfio/pci-quirks.c
> >     hw/vfio/pci.c
> >     hw/vfio/platform.c
> > vfio-ccw
> >     hw/s390x/s390-ccw.c
> > vhost
> >     hw/block/vhost-user-blk.c
> >     hw/scsi/vhost-scsi.c
> >     hw/scsi/vhost-user-scsi.c
> >     hw/virtio/vhost-vsock.c
> > virtio
> >     hw/virtio/virtio-balloon.c
> >     hw/virtio/virtio-bus.c
> >     hw/virtio/virtio-pci.c
> >     hw/virtio/virtio-rng-pci.c
> >     hw/virtio/virtio.c
> > virtio-9p
> >     hw/9pfs/9p-local.c
> >     hw/9pfs/9p.c
> > virtio-blk
> >     hw/block/dataplane/virtio-blk.c
> >     hw/block/virtio-blk.c
> > virtio-ccw
> >     hw/s390x/virtio-ccw-crypto.c
> >     hw/s390x/virtio-ccw-rng.c
> >     hw/s390x/virtio-ccw.c
> > virtio-input
> >     hw/input/virtio-input.c
> > virtio-serial
> >     hw/char/virtio-serial-bus.c
> > virtio-rng
> >     backends/rng.c
> >     hw/virtio/virtio-rng.c
> > megasas
> >     hw/scsi/megasas.c
> > NVDIMM
> >     hw/mem/nvdimm.c
> > eepro100
> >     hw/net/eepro100.c
> > virtio-gpu
> >     hw/display/virtio-gpu-base.c
> >     hw/display/virtio-gpu-pci.c
> >     hw/display/virtio-vga.c
> > fw_cfg
> >     hw/nvram/fw_cfg.c
> > XIVE
> >     hw/intc/spapr_xive.c
> >     hw/intc/spapr_xive_kvm.c
> >     hw/intc/xive.c
> > Audio
> >     audio/audio.c
> >     hw/audio/intel-hda.c
> > block
> >     block.c
> >     block/backup.c
> >     block/block-backend.c
> >     block/commit.c
> >     block/crypto.c
> >     block/dirty-bitmap.c
> >     block/io.c
> >     block/mirror.c
> >     block/qapi.c
> >     block/snapshot.c
> >     block/throttle-groups.c
> >     block/throttle.c
> >     block/vxhs.c
> >     blockdev.c
> >     blockjob.c
> >     hw/block/onenand.c
> >     job.c
> > scsi
> >     scsi/pr-manager-helper.c
> > chardev
> >     chardev/char-socket.c
> >     chardev/char.c
> >     chardev/spice.c
> > cmdline
> >     util/qemu-option.c
> > Dump
> >     dump/dump.c
> >     dump/win_dump.c
> > Memory API
> >     memory.c
> > SPICE
> >     hw/display/qxl.c
> > Graphics
> >     ui/input-barrier.c
> >     ui/input.c
> >     ui/vnc.c
> > Main loop
> >     util/main-loop.c
> >     vl.c
> > Human Monitor (HMP)
> >     monitor/misc.c
> > net
> >     net/can/can_host.c
> >     net/dump.c
> >     net/filter-buffer.c
> >     net/filter.c
> >     net/net.c
> >     net/netmap.c
> >     net/tap.c
> > hostmem
> >     backends/hostmem-file.c
> >     backends/hostmem-memfd.c
> >     backends/hostmem.c
> > cryptodev
> >     backends/cryptodev-vhost-user.c
> >     backends/cryptodev.c
> > QAPI
> >     qapi/qapi-visit-core.c
> >     qapi/qmp-dispatch.c
> >     qapi/string-input-visitor.c
> > qga
> >     qga/commands-posix.c
> > QOM
> >     hw/core/qdev-properties-system.c
> >     hw/core/qdev-properties.c
> >     hw/core/qdev.c
> >     qdev-monitor.c
> >     qom/object.c
> >     qom/object_interfaces.c
> >     qom/qom-qobject.c
> > QMP
> >     monitor/qmp-cmds.c
> > SLIRP
> >     net/slirp.c
> > Tracing
> >     trace/qmp.c
> > TPM
> >     hw/tpm/tpm_util.c
> >     tpm.c
> > Migration
> >     migration/migration.c
> >     migration/ram.c
> >     migration/rdma.c
> >     migration/savevm.c
> >     migration/socket.c
> > Cryptography
> >     crypto/block-luks.c
> >     crypto/secret.c
> >     crypto/tlssession.c
> > I/O Channels
> >     io/dns-resolver.c
> >     io/net-listener.c
> > Sockets
> >     util/qemu-sockets.c
> > colo
> >     migration/colo.c
> > Record/replay
> >     block/blkreplay.c
> > VMDK
> >     block/vmdk.c
> > RBD
> >     block/rbd.c
> > Sheepdog
> >     block/sheepdog.c
> > VHDX
> >     block/vhdx-log.c
> >     block/vhdx.c
> > VDI
> >     block/vdi.c
> > iSCSI
> >     block/iscsi.c
> > nbd
> >     include/block/nbd.h
> >     block/nbd.c
> >     nbd/client.c
> >     nbd/server.c
> > NFS
> >     block/nfs.c
> > SSH
> >     block/ssh.c
> > CURL
> >     block/curl.c
> > GLUSTER
> >     block/gluster.c
> > NVMe Block Driver
> >     block/nvme.c
> > Bootdevice
> >     bootdevice.c
> > Quorum
> >     block/quorum.c
> > blklogwrites
> >     block/blklogwrites.c
> > blkverify
> >     block/blkverify.c
> > parallels
> >     block/parallels.c
> > qed
> >     block/qed.c
> > raw
> >     block/file-posix.c
> >     block/file-win32.c
> >     block/raw-format.c
> > qcow2
> >     block/qcow2-bitmap.c
> >     block/qcow2.c
> > qcow
> >     block/qcow.c
> > blkdebug
> >     block/blkdebug.c
> > vpc
> >     block/vpc.c
> > vvfat
> >     block/vvfat.c
> > Replication
> >     block/replication.c
> >     replication.c
> > PVRDMA
> >     hw/rdma/vmw/pvrdma_main.c
> > hw/core/bus.c
> >     hw/core/bus.c
> > hw/cpu/core.c
> >     hw/cpu/core.c
> > hw/sd/ssi-sd.c
> >     hw/sd/ssi-sd.c
> > iothread.c
> >     iothread.c
> > memory_mapping.c
> >     memory_mapping.c
> > target/tilegx/cpu.c
> >     target/tilegx/cpu.c
> > tests/test-image-locking.c
> >     tests/test-image-locking.c
> > util/qemu-config.c
> >     util/qemu-config.c
> >
> >
> > Vladimir Sementsov-Ogievskiy (126):
> >    hw/core/loader-fit: fix freeing errp in fit_load_fdt
> >    net/net: Clean up variable shadowing in net_client_init()
> >    error: rename errp to errp_in where it is IN-argument
> >    hmp: drop Error pointer indirection in hmp_handle_error
> >    vnc: drop Error pointer indirection in vnc_client_io_error
> >    qdev-monitor: well form error hint helpers
> >    nbd: well form nbd_iter_channel_error errp handler
> >    ppc: well form kvmppc_hint_smt_possible error hint helper
> >    9pfs: well form error hint helpers
> >    hw/core/qdev: cleanup Error ** variables
> >    block/snapshot: rename Error ** parameter to more common errp
> >    hw/i386/amd_iommu: rename Error ** parameter to more common errp
> >    qga: rename Error ** parameter to more common errp
> >    monitor/qmp-cmds: rename Error ** parameter to more common errp
> >    hw/s390x: rename Error ** parameter to more common errp
> >    hw/sd: rename Error ** parameter to more common errp
> >    hw/tpm: rename Error ** parameter to more common errp
> >    hw/usb: rename Error ** parameter to more common errp
> >    include/block/snapshot.h: rename Error ** parameter to more common
> >      errp
> >    include/qom/object.h: rename Error ** parameter to more common errp
> >    qapi/error: add (Error **errp) cleaning APIs
> >    backends/cryptodev: drop local_err from cryptodev_backend_complete()
> >    hw/vfio/ap: drop local_err from vfio_ap_realize
> >    error: auto propagated local_err
> >    scripts: add coccinelle script to use auto propagated errp
> >    python: add commit-per-subsystem.py
> >    misc: introduce ERRP_AUTO_PROPAGATE
> >    s390x: introduce ERRP_AUTO_PROPAGATE
> >    tcg: introduce ERRP_AUTO_PROPAGATE
> >    kvm: introduce ERRP_AUTO_PROPAGATE
> >    xen: introduce ERRP_AUTO_PROPAGATE
> >    Hosts: introduce ERRP_AUTO_PROPAGATE
> >    ARM Machines: introduce ERRP_AUTO_PROPAGATE
> >    MIPS Machines: introduce ERRP_AUTO_PROPAGATE
> >    PowerPC Machines: introduce ERRP_AUTO_PROPAGATE
> >    SPARC Machines: introduce ERRP_AUTO_PROPAGATE
> >    S390 Machines: introduce ERRP_AUTO_PROPAGATE
> >    X86 Machines: introduce ERRP_AUTO_PROPAGATE
> >    IDE: introduce ERRP_AUTO_PROPAGATE
> >    Floppy: introduce ERRP_AUTO_PROPAGATE
> >    IPack: introduce ERRP_AUTO_PROPAGATE
> >    PCI: introduce ERRP_AUTO_PROPAGATE
> >    ACPI/SMBIOS: introduce ERRP_AUTO_PROPAGATE
> >    Network devices: introduce ERRP_AUTO_PROPAGATE
> >    pflash: introduce ERRP_AUTO_PROPAGATE
> >    SCSI: introduce ERRP_AUTO_PROPAGATE
> >    SD (Secure Card): introduce ERRP_AUTO_PROPAGATE
> >    USB: introduce ERRP_AUTO_PROPAGATE
> >    USB (serial adapter): introduce ERRP_AUTO_PROPAGATE
> >    VFIO: introduce ERRP_AUTO_PROPAGATE
> >    vfio-ccw: introduce ERRP_AUTO_PROPAGATE
> >    vhost: introduce ERRP_AUTO_PROPAGATE
> >    virtio: introduce ERRP_AUTO_PROPAGATE
> >    virtio-9p: introduce ERRP_AUTO_PROPAGATE
> >    virtio-blk: introduce ERRP_AUTO_PROPAGATE
> >    virtio-ccw: introduce ERRP_AUTO_PROPAGATE
> >    virtio-input: introduce ERRP_AUTO_PROPAGATE
> >    virtio-serial: introduce ERRP_AUTO_PROPAGATE
> >    virtio-rng: introduce ERRP_AUTO_PROPAGATE
> >    megasas: introduce ERRP_AUTO_PROPAGATE
> >    NVDIMM: introduce ERRP_AUTO_PROPAGATE
> >    eepro100: introduce ERRP_AUTO_PROPAGATE
> >    virtio-gpu: introduce ERRP_AUTO_PROPAGATE
> >    fw_cfg: introduce ERRP_AUTO_PROPAGATE
> >    XIVE: introduce ERRP_AUTO_PROPAGATE
> >    Audio: introduce ERRP_AUTO_PROPAGATE
> >    block: introduce ERRP_AUTO_PROPAGATE
> >    scsi: introduce ERRP_AUTO_PROPAGATE
> >    chardev: introduce ERRP_AUTO_PROPAGATE
> >    cmdline: introduce ERRP_AUTO_PROPAGATE
> >    Dump: introduce ERRP_AUTO_PROPAGATE
> >    Memory API: introduce ERRP_AUTO_PROPAGATE
> >    SPICE: introduce ERRP_AUTO_PROPAGATE
> >    Graphics: introduce ERRP_AUTO_PROPAGATE
> >    Main loop: introduce ERRP_AUTO_PROPAGATE
> >    Human Monitor (HMP): introduce ERRP_AUTO_PROPAGATE
> >    net: introduce ERRP_AUTO_PROPAGATE
> >    hostmem: introduce ERRP_AUTO_PROPAGATE
> >    cryptodev: introduce ERRP_AUTO_PROPAGATE
> >    QAPI: introduce ERRP_AUTO_PROPAGATE
> >    qga: introduce ERRP_AUTO_PROPAGATE
> >    QOM: introduce ERRP_AUTO_PROPAGATE
> >    QMP: introduce ERRP_AUTO_PROPAGATE
> >    SLIRP: introduce ERRP_AUTO_PROPAGATE
> >    Tracing: introduce ERRP_AUTO_PROPAGATE
> >    TPM: introduce ERRP_AUTO_PROPAGATE
> >    Migration: introduce ERRP_AUTO_PROPAGATE
> >    Cryptography: introduce ERRP_AUTO_PROPAGATE
> >    I/O Channels: introduce ERRP_AUTO_PROPAGATE
> >    Sockets: introduce ERRP_AUTO_PROPAGATE
> >    colo: introduce ERRP_AUTO_PROPAGATE
> >    Record/replay: introduce ERRP_AUTO_PROPAGATE
> >    VMDK: introduce ERRP_AUTO_PROPAGATE
> >    RBD: introduce ERRP_AUTO_PROPAGATE
> >    Sheepdog: introduce ERRP_AUTO_PROPAGATE
> >    VHDX: introduce ERRP_AUTO_PROPAGATE
> >    VDI: introduce ERRP_AUTO_PROPAGATE
> >    iSCSI: introduce ERRP_AUTO_PROPAGATE
> >    nbd: introduce ERRP_AUTO_PROPAGATE
> >    NFS: introduce ERRP_AUTO_PROPAGATE
> >    SSH: introduce ERRP_AUTO_PROPAGATE
> >    CURL: introduce ERRP_AUTO_PROPAGATE
> >    GLUSTER: introduce ERRP_AUTO_PROPAGATE
> >    NVMe Block Driver: introduce ERRP_AUTO_PROPAGATE
> >    Bootdevice: introduce ERRP_AUTO_PROPAGATE
> >    Quorum: introduce ERRP_AUTO_PROPAGATE
> >    blklogwrites: introduce ERRP_AUTO_PROPAGATE
> >    blkverify: introduce ERRP_AUTO_PROPAGATE
> >    parallels: introduce ERRP_AUTO_PROPAGATE
> >    qed: introduce ERRP_AUTO_PROPAGATE
> >    raw: introduce ERRP_AUTO_PROPAGATE
> >    qcow2: introduce ERRP_AUTO_PROPAGATE
> >    qcow: introduce ERRP_AUTO_PROPAGATE
> >    blkdebug: introduce ERRP_AUTO_PROPAGATE
> >    vpc: introduce ERRP_AUTO_PROPAGATE
> >    vvfat: introduce ERRP_AUTO_PROPAGATE
> >    Replication: introduce ERRP_AUTO_PROPAGATE
> >    PVRDMA: introduce ERRP_AUTO_PROPAGATE
> >    hw/core/bus.c: introduce ERRP_AUTO_PROPAGATE
> >    hw/cpu/core.c: introduce ERRP_AUTO_PROPAGATE
> >    hw/sd/ssi-sd.c: introduce ERRP_AUTO_PROPAGATE
> >    iothread.c: introduce ERRP_AUTO_PROPAGATE
> >    memory_mapping.c: introduce ERRP_AUTO_PROPAGATE
> >    target/tilegx/cpu.c: introduce ERRP_AUTO_PROPAGATE
> >    tests/test-image-locking.c: introduce ERRP_AUTO_PROPAGATE
> >    util/qemu-config.c: introduce ERRP_AUTO_PROPAGATE
> >
> >
> > CC: Gerd Hoffmann <kraxel@redhat.com>
> > CC: "Gonglei (Arei)" <arei.gonglei@huawei.com>
> > CC: Eduardo Habkost <ehabkost@redhat.com>
> > CC: Igor Mammedov <imammedo@redhat.com>
> > CC: Laurent Vivier <lvivier@redhat.com>
> > CC: Amit Shah <amit@kernel.org>
> > CC: Kevin Wolf <kwolf@redhat.com>
> > CC: Max Reitz <mreitz@redhat.com>
> > CC: John Snow <jsnow@redhat.com>
> > CC: Ari Sundholm <ari@tuxera.com>
> > CC: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>
> > CC: Paolo Bonzini <pbonzini@redhat.com>
> > CC: Stefan Hajnoczi <stefanha@redhat.com>
> > CC: Fam Zheng <fam@euphon.net>
> > CC: Stefan Weil <sw@weilnetz.de>
> > CC: Ronnie Sahlberg <ronniesahlberg@gmail.com>
> > CC: Peter Lieven <pl@kamp.de>
> > CC: Eric Blake <eblake@redhat.com>
> > CC: "Denis V. Lunev" <den@openvz.org>
> > CC: Markus Armbruster <armbru@redhat.com>
> > CC: Alberto Garcia <berto@igalia.com>
> > CC: Jason Dillaman <dillaman@redhat.com>
> > CC: Wen Congyang <wencongyang2@huawei.com>
> > CC: Xie Changlong <xiechanglong.d@gmail.com>
> > CC: Liu Yuan <namei.unix@gmail.com>
> > CC: "Richard W.M. Jones" <rjones@redhat.com>
> > CC: Jeff Cody <codyprime@gmail.com>
> > CC: "Marc-André Lureau" <marcandre.lureau@redhat.com>
> > CC: "Daniel P. Berrangé" <berrange@redhat.com>
> > CC: Richard Henderson <rth@twiddle.net>
> > CC: Greg Kurz <groug@kaod.org>
> > CC: "Michael S. Tsirkin" <mst@redhat.com>
> > CC: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
> > CC: Beniamino Galvani <b.galvani@gmail.com>
> > CC: Peter Maydell <peter.maydell@linaro.org>
> > CC: "Cédric Le Goater" <clg@kaod.org>
> > CC: Andrew Jeffery <andrew@aj.id.au>
> > CC: Joel Stanley <joel@jms.id.au>
> > CC: Andrew Baumann <Andrew.Baumann@microsoft.com>
> > CC: "Philippe Mathieu-Daudé" <philmd@redhat.com>
> > CC: Antony Pavlov <antonynpavlov@gmail.com>
> > CC: Jean-Christophe Dubois <jcd@tribudubois.net>
> > CC: Peter Chubb <peter.chubb@nicta.com.au>
> > CC: Subbaraya Sundeep <sundeep.lkml@gmail.com>
> > CC: Eric Auger <eric.auger@redhat.com>
> > CC: Alistair Francis <alistair@alistair23.me>
> > CC: "Edgar E. Iglesias" <edgar.iglesias@gmail.com>
> > CC: Stefano Stabellini <sstabellini@kernel.org>
> > CC: Anthony Perard <anthony.perard@citrix.com>
> > CC: Paul Durrant <paul@xen.org>
> > CC: Paul Burton <pburton@wavecomp.com>
> > CC: Aleksandar Rikalo <arikalo@wavecomp.com>
> > CC: Chris Wulff <crwulff@gmail.com>
> > CC: Marek Vasut <marex@denx.de>
> > CC: David Gibson <david@gibson.dropbear.id.au>
> > CC: Cornelia Huck <cohuck@redhat.com>
> > CC: Halil Pasic <pasic@linux.ibm.com>
> > CC: Christian Borntraeger <borntraeger@de.ibm.com>
> > CC: "Hervé Poussineau" <hpoussin@reactos.org>
> > CC: Xiao Guangrong <xiaoguangrong.eric@gmail.com>
> > CC: Aurelien Jarno <aurelien@aurel32.net>
> > CC: Aleksandar Markovic <amarkovic@wavecomp.com>
> > CC: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
> > CC: Jason Wang <jasowang@redhat.com>
> > CC: Laszlo Ersek <lersek@redhat.com>
> > CC: Yuval Shaia <yuval.shaia@oracle.com>
> > CC: Palmer Dabbelt <palmer@sifive.com>
> > CC: Sagar Karandikar <sagark@eecs.berkeley.edu>
> > CC: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
> > CC: David Hildenbrand <david@redhat.com>
> > CC: Thomas Huth <thuth@redhat.com>
> > CC: Eric Farman <farman@linux.ibm.com>
> > CC: Matthew Rosato <mjrosato@linux.ibm.com>
> > CC: Hannes Reinecke <hare@suse.com>
> > CC: Michael Walle <michael@walle.cc>
> > CC: Artyom Tarasenko <atar4qemu@gmail.com>
> > CC: Stefan Berger <stefanb@linux.ibm.com>
> > CC: Samuel Thibault <samuel.thibault@ens-lyon.org>
> > CC: Alex Williamson <alex.williamson@redhat.com>
> > CC: Tony Krowiak <akrowiak@linux.ibm.com>
> > CC: Pierre Morel <pmorel@linux.ibm.com>
> > CC: Michael Roth <mdroth@linux.vnet.ibm.com>
> > CC: Hailiang Zhang <zhang.zhanghailiang@huawei.com>
> > CC: Juan Quintela <quintela@redhat.com>
> > CC: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
> > CC: Luigi Rizzo <rizzo@iet.unipi.it>
> > CC: Giuseppe Lettieri <g.lettieri@iet.unipi.it>
> > CC: Vincenzo Maffione <v.maffione@gmail.com>
> > CC: Jan Kiszka <jan.kiszka@siemens.com>
> > CC: Anthony Green <green@moxielogic.com>
> > CC: Stafford Horne <shorne@gmail.com>
> > CC: Guan Xuetao <gxt@mprc.pku.edu.cn>
> > CC: Max Filippov <jcmvbkbc@gmail.com>
> > CC: qemu-block@nongnu.org
> > CC: integration@gluster.org
> > CC: sheepdog@lists.wpkg.org
> > CC: qemu-arm@nongnu.org
> > CC: xen-devel@lists.xenproject.org
> > CC: qemu-ppc@nongnu.org
> > CC: qemu-s390x@nongnu.org
> > CC: qemu-riscv@nongnu.org
> >
> >   include/block/nbd.h                           |   1 +
> >   include/block/snapshot.h                      |   2 +-
> >   include/monitor/hmp.h                         |   2 +-
> >   include/qapi/error.h                          |  69 ++++-
> >   include/qom/object.h                          |   4 +-
> >   target/ppc/kvm_ppc.h                          |   4 +-
> >   ui/vnc.h                                      |   2 +-
> >   audio/audio.c                                 |  12 +-
> >   backends/cryptodev-vhost-user.c               |  10 +-
> >   backends/cryptodev.c                          |  25 +-
> >   backends/hostmem-file.c                       |  21 +-
> >   backends/hostmem-memfd.c                      |  18 +-
> >   backends/hostmem.c                            |  41 ++-
> >   backends/rng.c                                |   7 +-
> >   block.c                                       | 225 +++++++---------
> >   block/backup.c                                |   1 +
> >   block/blkdebug.c                              |  36 ++-
> >   block/blklogwrites.c                          |  22 +-
> >   block/blkreplay.c                             |   7 +-
> >   block/blkverify.c                             |  17 +-
> >   block/block-backend.c                         |  19 +-
> >   block/commit.c                                |   7 +-
> >   block/crypto.c                                |  14 +-
> >   block/curl.c                                  |   7 +-
> >   block/dirty-bitmap.c                          |   1 +
> >   block/file-posix.c                            |  79 +++---
> >   block/file-win32.c                            |  29 +-
> >   block/gluster.c                               |  69 +++--
> >   block/io.c                                    |  12 +-
> >   block/iscsi.c                                 |  36 ++-
> >   block/mirror.c                                |  19 +-
> >   block/nbd.c                                   |  59 ++--
> >   block/nfs.c                                   |   7 +-
> >   block/nvme.c                                  |  19 +-
> >   block/parallels.c                             |  30 +--
> >   block/qapi.c                                  |  26 +-
> >   block/qcow.c                                  |  17 +-
> >   block/qcow2-bitmap.c                          |   9 +-
> >   block/qcow2.c                                 |  98 +++----
> >   block/qed.c                                   |  18 +-
> >   block/quorum.c                                |  23 +-
> >   block/raw-format.c                            |   7 +-
> >   block/rbd.c                                   |  29 +-
> >   block/replication.c                           |  40 ++-
> >   block/sheepdog.c                              |  73 +++--
> >   block/snapshot.c                              |  20 +-
> >   block/ssh.c                                   |  12 +-
> >   block/throttle-groups.c                       |  24 +-
> >   block/throttle.c                              |   7 +-
> >   block/vdi.c                                   |  15 +-
> >   block/vhdx-log.c                              |   1 +
> >   block/vhdx.c                                  |  22 +-
> >   block/vmdk.c                                  |  41 ++-
> >   block/vpc.c                                   |  28 +-
> >   block/vvfat.c                                 |  12 +-
> >   block/vxhs.c                                  |  23 +-
> >   blockdev.c                                    | 252 ++++++++----------
> >   blockjob.c                                    |   8 +-
> >   bootdevice.c                                  |  31 +--
> >   chardev/char-socket.c                         |   7 +-
> >   chardev/char.c                                |  20 +-
> >   chardev/spice.c                               |   1 +
> >   crypto/block-luks.c                           |  56 ++--
> >   crypto/secret.c                               |  17 +-
> >   crypto/tlssession.c                           |   7 +-
> >   dump/dump-hmp-cmds.c                          |   4 +-
> >   dump/dump.c                                   | 151 +++++------
> >   dump/win_dump.c                               |  29 +-
> >   exec.c                                        |  21 +-
> >   hw/9pfs/9p-local.c                            |  12 +-
> >   hw/9pfs/9p-proxy.c                            |   5 +-
> >   hw/9pfs/9p.c                                  |   1 +
> >   hw/acpi/core.c                                |  18 +-
> >   hw/acpi/cpu_hotplug.c                         |   2 +-
> >   hw/acpi/ich9.c                                |  30 +--
> >   hw/acpi/memory_hotplug.c                      |   7 +-
> >   hw/arm/allwinner-a10.c                        |  27 +-
> >   hw/arm/armv7m.c                               |  52 ++--
> >   hw/arm/aspeed_soc.c                           |   1 +
> >   hw/arm/bcm2835_peripherals.c                  |  85 +++---
> >   hw/arm/bcm2836.c                              |  41 ++-
> >   hw/arm/digic.c                                |  22 +-
> >   hw/arm/fsl-imx25.c                            |  62 ++---
> >   hw/arm/fsl-imx31.c                            |  57 ++--
> >   hw/arm/fsl-imx6.c                             |  81 +++---
> >   hw/arm/integratorcp.c                         |   7 +-
> >   hw/arm/msf2-soc.c                             |  22 +-
> >   hw/arm/nrf51_soc.c                            |  47 ++--
> >   hw/arm/smmu-common.c                          |   7 +-
> >   hw/arm/smmuv3.c                               |   7 +-
> >   hw/arm/stm32f205_soc.c                        |  39 ++-
> >   hw/arm/virt.c                                 |   2 +
> >   hw/arm/xlnx-versal-virt.c                     |   7 +-
> >   hw/arm/xlnx-zynqmp.c                          |  86 +++---
> >   hw/audio/intel-hda.c                          |  13 +-
> >   hw/block/dataplane/virtio-blk.c               |   1 +
> >   hw/block/dataplane/xen-block.c                |  17 +-
> >   hw/block/fdc.c                                |  19 +-
> >   hw/block/onenand.c                            |   7 +-
> >   hw/block/pflash_cfi01.c                       |   7 +-
> >   hw/block/pflash_cfi02.c                       |   7 +-
> >   hw/block/vhost-user-blk.c                     |   6 +-
> >   hw/block/virtio-blk.c                         |   7 +-
> >   hw/block/xen-block.c                          | 119 ++++-----
> >   hw/char/debugcon.c                            |   7 +-
> >   hw/char/serial-pci-multi.c                    |   7 +-
> >   hw/char/serial-pci.c                          |   7 +-
> >   hw/char/virtio-serial-bus.c                   |   7 +-
> >   hw/core/bus.c                                 |  15 +-
> >   hw/core/loader-fit.c                          |   7 +-
> >   hw/core/machine-hmp-cmds.c                    |   6 +-
> >   hw/core/machine.c                             |  21 +-
> >   hw/core/numa.c                                |  51 ++--
> >   hw/core/qdev-properties-system.c              |  28 +-
> >   hw/core/qdev-properties.c                     |  89 +++----
> >   hw/core/qdev.c                                |  58 ++--
> >   hw/cpu/a15mpcore.c                            |   7 +-
> >   hw/cpu/a9mpcore.c                             |  27 +-
> >   hw/cpu/arm11mpcore.c                          |  22 +-
> >   hw/cpu/core.c                                 |  14 +-
> >   hw/cpu/realview_mpcore.c                      |  12 +-
> >   hw/display/bcm2835_fb.c                       |   6 +-
> >   hw/display/qxl.c                              |   7 +-
> >   hw/display/virtio-gpu-base.c                  |   7 +-
> >   hw/display/virtio-gpu-pci.c                   |   7 +-
> >   hw/display/virtio-vga.c                       |   7 +-
> >   hw/dma/bcm2835_dma.c                          |   6 +-
> >   hw/dma/xilinx_axidma.c                        |  22 +-
> >   hw/gpio/aspeed_gpio.c                         |   7 +-
> >   hw/gpio/bcm2835_gpio.c                        |  10 +-
> >   hw/i386/amd_iommu.c                           |  14 +-
> >   hw/i386/pc.c                                  | 120 ++++-----
> >   hw/ide/qdev.c                                 |  16 +-
> >   hw/input/virtio-input.c                       |  14 +-
> >   hw/intc/apic_common.c                         |   7 +-
> >   hw/intc/arm_gic.c                             |   7 +-
> >   hw/intc/arm_gic_kvm.c                         |  12 +-
> >   hw/intc/arm_gicv3.c                           |  12 +-
> >   hw/intc/arm_gicv3_its_kvm.c                   |   7 +-
> >   hw/intc/arm_gicv3_kvm.c                       |  17 +-
> >   hw/intc/armv7m_nvic.c                         |  12 +-
> >   hw/intc/nios2_iic.c                           |   6 +-
> >   hw/intc/pnv_xive.c                            |  15 +-
> >   hw/intc/realview_gic.c                        |   7 +-
> >   hw/intc/s390_flic_kvm.c                       |   9 +-
> >   hw/intc/spapr_xive.c                          |  12 +-
> >   hw/intc/spapr_xive_kvm.c                      |  55 ++--
> >   hw/intc/xics.c                                |  28 +-
> >   hw/intc/xics_kvm.c                            |  30 +--
> >   hw/intc/xics_pnv.c                            |   7 +-
> >   hw/intc/xics_spapr.c                          |   7 +-
> >   hw/intc/xive.c                                |  27 +-
> >   hw/ipack/ipack.c                              |   5 +-
> >   hw/isa/pc87312.c                              |   7 +-
> >   hw/mem/memory-device.c                        |  20 +-
> >   hw/mem/nvdimm.c                               |  25 +-
> >   hw/mem/pc-dimm.c                              |  23 +-
> >   hw/microblaze/xlnx-zynqmp-pmu.c               |  12 +-
> >   hw/mips/cps.c                                 |  46 ++--
> >   hw/misc/bcm2835_mbox.c                        |   6 +-
> >   hw/misc/bcm2835_property.c                    |  10 +-
> >   hw/misc/ivshmem.c                             |  37 ++-
> >   hw/misc/macio/macio.c                         |  68 ++---
> >   hw/misc/msf2-sysreg.c                         |   1 +
> >   hw/misc/tmp105.c                              |   7 +-
> >   hw/misc/tmp421.c                              |   7 +-
> >   hw/net/dp8393x.c                              |   7 +-
> >   hw/net/eepro100.c                             |   7 +-
> >   hw/net/ne2000-isa.c                           |  17 +-
> >   hw/net/xilinx_axienet.c                       |  22 +-
> >   hw/nvram/fw_cfg.c                             |  14 +-
> >   hw/nvram/nrf51_nvm.c                          |   7 +-
> >   hw/pci-bridge/gen_pcie_root_port.c            |   7 +-
> >   hw/pci-bridge/pci_bridge_dev.c                |  13 +-
> >   hw/pci-bridge/pci_expander_bridge.c           |   7 +-
> >   hw/pci-bridge/pcie_pci_bridge.c               |   8 +-
> >   hw/pci-bridge/pcie_root_port.c                |   1 +
> >   hw/pci-host/piix.c                            |   7 +-
> >   hw/pci/pci.c                                  |  19 +-
> >   hw/pci/pcie.c                                 |   7 +-
> >   hw/pci/shpc.c                                 |  14 +-
> >   hw/ppc/e500.c                                 |   7 +-
> >   hw/ppc/mac_newworld.c                         |   1 +
> >   hw/ppc/pnv.c                                  | 109 ++++----
> >   hw/ppc/pnv_core.c                             |  23 +-
> >   hw/ppc/pnv_homer.c                            |   5 +-
> >   hw/ppc/pnv_lpc.c                              |  26 +-
> >   hw/ppc/pnv_occ.c                              |   5 +-
> >   hw/ppc/pnv_psi.c                              |  23 +-
> >   hw/ppc/spapr.c                                | 133 ++++-----
> >   hw/ppc/spapr_caps.c                           |  57 ++--
> >   hw/ppc/spapr_cpu_core.c                       |  36 ++-
> >   hw/ppc/spapr_drc.c                            |  48 ++--
> >   hw/ppc/spapr_irq.c                            |  98 +++----
> >   hw/ppc/spapr_pci.c                            |  97 +++----
> >   hw/ppc/spapr_vio.c                            |  12 +-
> >   hw/rdma/vmw/pvrdma_main.c                     |   1 +
> >   hw/riscv/riscv_hart.c                         |   7 +-
> >   hw/riscv/sifive_e.c                           |   7 +-
> >   hw/riscv/sifive_u.c                           |  11 +-
> >   hw/s390x/3270-ccw.c                           |  13 +-
> >   hw/s390x/css-bridge.c                         |   7 +-
> >   hw/s390x/css.c                                |   7 +-
> >   hw/s390x/event-facility.c                     |   2 +-
> >   hw/s390x/ipl.c                                |  24 +-
> >   hw/s390x/s390-ccw.c                           |  19 +-
> >   hw/s390x/s390-pci-bus.c                       |  37 ++-
> >   hw/s390x/s390-skeys.c                         |   7 +-
> >   hw/s390x/s390-stattrib.c                      |   3 +-
> >   hw/s390x/s390-virtio-ccw.c                    |  11 +-
> >   hw/s390x/sclp.c                               |  15 +-
> >   hw/s390x/tod-kvm.c                            |  14 +-
> >   hw/s390x/virtio-ccw-crypto.c                  |   7 +-
> >   hw/s390x/virtio-ccw-rng.c                     |   7 +-
> >   hw/s390x/virtio-ccw.c                         |  13 +-
> >   hw/scsi/esp-pci.c                             |   7 +-
> >   hw/scsi/megasas.c                             |  11 +-
> >   hw/scsi/mptsas.c                              |  13 +-
> >   hw/scsi/scsi-bus.c                            |  24 +-
> >   hw/scsi/scsi-disk.c                           |   8 +-
> >   hw/scsi/scsi-generic.c                        |   1 +
> >   hw/scsi/vhost-scsi.c                          |  12 +-
> >   hw/scsi/vhost-user-scsi.c                     |   7 +-
> >   hw/scsi/virtio-scsi.c                         |   7 +-
> >   hw/sd/milkymist-memcard.c                     |  11 +-
> >   hw/sd/sdhci-pci.c                             |   7 +-
> >   hw/sd/sdhci.c                                 |  23 +-
> >   hw/sd/ssi-sd.c                                |  14 +-
> >   hw/smbios/smbios.c                            |  42 ++-
> >   hw/sparc/sun4m.c                              |  21 +-
> >   hw/sparc64/sun4u.c                            |   7 +-
> >   hw/timer/aspeed_timer.c                       |   6 +-
> >   hw/tpm/tpm_emulator.c                         |   8 +-
> >   hw/tpm/tpm_util.c                             |   7 +-
> >   hw/usb/bus.c                                  |  37 ++-
> >   hw/usb/ccid-card-emulated.c                   |   1 +
> >   hw/usb/dev-network.c                          |   2 +-
> >   hw/usb/dev-serial.c                           |   7 +-
> >   hw/usb/dev-smartcard-reader.c                 |  14 +-
> >   hw/usb/dev-storage.c                          |  17 +-
> >   hw/usb/hcd-ohci-pci.c                         |   7 +-
> >   hw/usb/hcd-ohci.c                             |  14 +-
> >   hw/usb/hcd-uhci.c                             |   7 +-
> >   hw/usb/hcd-xhci.c                             |  13 +-
> >   hw/vfio/ap.c                                  |  16 +-
> >   hw/vfio/ccw.c                                 |  24 +-
> >   hw/vfio/common.c                              |   3 +
> >   hw/vfio/pci-quirks.c                          |   8 +-
> >   hw/vfio/pci.c                                 |  42 ++-
> >   hw/vfio/platform.c                            |   1 +
> >   hw/virtio/vhost-vsock.c                       |   1 +
> >   hw/virtio/virtio-balloon.c                    |  35 ++-
> >   hw/virtio/virtio-bus.c                        |  17 +-
> >   hw/virtio/virtio-pci.c                        |   2 +
> >   hw/virtio/virtio-rng-pci.c                    |   7 +-
> >   hw/virtio/virtio-rng.c                        |   7 +-
> >   hw/virtio/virtio.c                            |  19 +-
> >   hw/watchdog/wdt_aspeed.c                      |   5 +-
> >   hw/xen/xen-backend.c                          |   7 +-
> >   hw/xen/xen-bus.c                              |  92 +++----
> >   hw/xen/xen-host-pci-device.c                  |  27 +-
> >   hw/xen/xen_pt.c                               |  25 +-
> >   hw/xen/xen_pt_config_init.c                   |  20 +-
> >   io/dns-resolver.c                             |   7 +-
> >   io/net-listener.c                             |   7 +-
> >   iothread.c                                    |  27 +-
> >   job.c                                         |   7 +-
> >   memory.c                                      |  63 ++---
> >   memory_mapping.c                              |   7 +-
> >   migration/colo.c                              |  38 ++-
> >   migration/migration.c                         |  39 ++-
> >   migration/ram.c                               |  13 +-
> >   migration/rdma.c                              |  13 +-
> >   migration/savevm.c                            |   2 +
> >   migration/socket.c                            |  18 +-
> >   monitor/hmp-cmds.c                            | 155 ++++++-----
> >   monitor/misc.c                                |   9 +-
> >   monitor/qmp-cmds.c                            |   9 +-
> >   nbd/client.c                                  |   5 +
> >   nbd/server.c                                  |   5 +
> >   net/can/can_host.c                            |   7 +-
> >   net/dump.c                                    |  15 +-
> >   net/filter-buffer.c                           |  15 +-
> >   net/filter.c                                  |   7 +-
> >   net/net.c                                     |  58 ++--
> >   net/netmap.c                                  |   7 +-
> >   net/slirp.c                                   |   7 +-
> >   net/tap.c                                     |  47 ++--
> >   qapi/qapi-visit-core.c                        |  56 ++--
> >   qapi/qmp-dispatch.c                           |   7 +-
> >   qapi/string-input-visitor.c                   |   7 +-
> >   qdev-monitor.c                                |  69 +++--
> >   qga/commands-posix.c                          | 222 +++++++--------
> >   qga/commands-win32.c                          | 141 +++++-----
> >   qga/commands.c                                |  12 +-
> >   qom/object.c                                  | 246 ++++++++---------
> >   qom/object_interfaces.c                       |  27 +-
> >   qom/qom-hmp-cmds.c                            |   4 +-
> >   qom/qom-qobject.c                             |   7 +-
> >   replication.c                                 |  28 +-
> >   scsi/pr-manager-helper.c                      |   7 +-
> >   target/alpha/cpu.c                            |   7 +-
> >   target/arm/cpu.c                              |   7 +-
> >   target/arm/cpu64.c                            |  11 +-
> >   target/cris/cpu.c                             |   7 +-
> >   target/hppa/cpu.c                             |   7 +-
> >   target/i386/cpu.c                             | 117 ++++----
> >   target/lm32/cpu.c                             |   7 +-
> >   target/m68k/cpu.c                             |   7 +-
> >   target/microblaze/cpu.c                       |   7 +-
> >   target/mips/cpu.c                             |   7 +-
> >   target/moxie/cpu.c                            |   7 +-
> >   target/nios2/cpu.c                            |   7 +-
> >   target/openrisc/cpu.c                         |   7 +-
> >   target/ppc/compat.c                           |  20 +-
> >   target/ppc/kvm.c                              |  14 +-
> >   target/ppc/translate_init.inc.c               |  26 +-
> >   target/riscv/cpu.c                            |   7 +-
> >   target/s390x/cpu.c                            |  26 +-
> >   target/s390x/cpu_models.c                     |   2 +
> >   target/sh4/cpu.c                              |   7 +-
> >   target/sparc/cpu.c                            |  14 +-
> >   target/tilegx/cpu.c                           |   7 +-
> >   target/tricore/cpu.c                          |   7 +-
> >   target/unicore32/cpu.c                        |   7 +-
> >   target/xtensa/cpu.c                           |   7 +-
> >   tests/test-image-locking.c                    |   7 +-
> >   tpm.c                                         |   7 +-
> >   trace/qmp.c                                   |  14 +-
> >   ui/input-barrier.c                            |   7 +-
> >   ui/input.c                                    |  14 +-
> >   ui/vnc.c                                      |  39 ++-
> >   util/error.c                                  |  30 +--
> >   util/main-loop.c                              |   5 +-
> >   util/oslib-posix.c                            |   6 +-
> >   util/qemu-config.c                            |  29 +-
> >   util/qemu-option.c                            |  59 ++--
> >   util/qemu-sockets.c                           |  31 +--
> >   vl.c                                          |  14 +-
> >   python/commit-per-subsystem.py                | 204 ++++++++++++++
> >   scripts/coccinelle/auto-propagated-errp.cocci | 118 ++++++++
> >   341 files changed, 3851 insertions(+), 4455 deletions(-)
> >   create mode 100755 python/commit-per-subsystem.py
> >   create mode 100644 scripts/coccinelle/auto-propagated-errp.cocci
> >
>
>
> --
> Best regards,
> Vladimir
Cornelia Huck Nov. 12, 2019, 1:46 p.m. UTC | #4
On Fri, 8 Nov 2019 22:57:25 +0400
Marc-André Lureau <marcandre.lureau@redhat.com> wrote:

> Hi
> 
> On Fri, Nov 8, 2019 at 7:31 PM Vladimir Sementsov-Ogievskiy
> <vsementsov@virtuozzo.com> wrote:
> >
> > Finally, what is the plan?
> >
> > Markus what do you think?
> >
> > Now a lot of patches are reviewed, but a lot of are not.
> >
> > Is there any hope that all patches will be reviewed? Should I resend the
> > whole series, or may be reduce it to reviewed subsystems only?  
> 
> I don't think we have well established rules for whole-tree cleanups
> like this. In the past, several cleanup series got lost.

Yes, it is always problematic if a series touches a lot of different
subsystems.

> 
> It will take ages to get every subsystem maintainer to review the
> patches. Most likely, since they are quite systematic, there isn't
> much to say and it is easy to miss something that has some hidden
> ramifications. Perhaps whole-tree cleanups should require at least 2
> reviewers to bypass the subsytem maintainer review? But my past
> experience with this kind of exercice doesn't encourage me, and
> probably I am not the only one.

It's not just the reviews; it's easy to miss compile problems on less
mainstream architectures (and even easier to miss functional problems
there, although they are probably less likely with automated rework.)
CI can probably help, but that's something for the future.

Anyway, I've now gotten around to that series; spotted one problem in
s390x code, I think.

One thing that's helpful for such a large series is a git branch that
makes it easy to give the series a quick go. (You can use patchew, but
it takes time before it gets all mails, so just pushing it somewhere
and letting people know is a good idea anyway.)
Vladimir Sementsov-Ogievskiy Nov. 12, 2019, 3:33 p.m. UTC | #5
12.11.2019 16:46, Cornelia Huck wrote:
> On Fri, 8 Nov 2019 22:57:25 +0400
> Marc-André Lureau <marcandre.lureau@redhat.com> wrote:
> 
>> Hi
>>
>> On Fri, Nov 8, 2019 at 7:31 PM Vladimir Sementsov-Ogievskiy
>> <vsementsov@virtuozzo.com> wrote:
>>>
>>> Finally, what is the plan?
>>>
>>> Markus what do you think?
>>>
>>> Now a lot of patches are reviewed, but a lot of are not.
>>>
>>> Is there any hope that all patches will be reviewed? Should I resend the
>>> whole series, or may be reduce it to reviewed subsystems only?
>>
>> I don't think we have well established rules for whole-tree cleanups
>> like this. In the past, several cleanup series got lost.
> 
> Yes, it is always problematic if a series touches a lot of different
> subsystems.
> 
>>
>> It will take ages to get every subsystem maintainer to review the
>> patches. Most likely, since they are quite systematic, there isn't
>> much to say and it is easy to miss something that has some hidden
>> ramifications. Perhaps whole-tree cleanups should require at least 2
>> reviewers to bypass the subsytem maintainer review? But my past
>> experience with this kind of exercice doesn't encourage me, and
>> probably I am not the only one.
> 
> It's not just the reviews; it's easy to miss compile problems on less
> mainstream architectures (and even easier to miss functional problems
> there, although they are probably less likely with automated rework.)
> CI can probably help, but that's something for the future.
> 
> Anyway, I've now gotten around to that series; spotted one problem in
> s390x code, I think.
> 
> One thing that's helpful for such a large series is a git branch that
> makes it easy to give the series a quick go. (You can use patchew, but
> it takes time before it gets all mails, so just pushing it somewhere
> and letting people know is a good idea anyway.)
> 

Thanks for review!

The series are posted here:

https://src.openvz.org/users/vsementsov/repos/qemu/browse

https://src.openvz.org/scm/~vsementsov/qemu.git #tag up-auto-local-err-v5
Vladimir Sementsov-Ogievskiy Nov. 20, 2019, 9:50 a.m. UTC | #6
Okay...

I think that:

1. A lot of efforts (not only my, I think reviewing is already exceeded generation efforts)
   are made, it would be sad to lose them.

2. It's safe enough to apply only part of generated patches: we just fix error_abort/error_fatal
   in more popular subsystems, what's wrong with that? Why not to cover 80% cases by 20% efforts?

3. It's obviously impossible to merge the whole series. A lot of time passed, series diverges.


So I propose the following plan:

1. I resend small separate series of preparation patches per maintainer. They are good anyway.

2. We commit patch with macro (changing MUST to SHOULD in documentation) and coccinelle script.
    (or that may be combined with the first series from [3.])

3. When one of preparations taken to maintainer's tree, I send generated patches for
    its maintainer.


If no objections during a week, I'll start that plan, hope someone will support it.


08.11.2019 18:30, Vladimir Sementsov-Ogievskiy wrote:
> Finally, what is the plan?
> 
> Markus what do you think?
> 
> Now a lot of patches are reviewed, but a lot of are not.
> 
> Is there any hope that all patches will be reviewed? Should I resend the
> whole series, or may be reduce it to reviewed subsystems only?
> 
> 11.10.2019 19:03, Vladimir Sementsov-Ogievskiy wrote:
>> Hi all!
>>
>> At the request of Markus: full version of errp propagation. Let's look
>> at it. Cover as much as possible, except inserting macro invocation
>> where it's not necessary.
>>
>> It's huge, and so it's an RFC.
>>
>> In v5 I've added a lot more preparation cleanups:
>> 01-23 are preparation cleanups
>>    01: not changed, keep Eric's r-b
>>    02: improve commit msg [Markus], keep Eric's r-b
>>    03: changed, only error API here, drop r-b
>> 24 is core macro
>>    - improve cover letter, wording and macro code style
>>    - keep Eric's r-b
>> 25-26: automation scripts
>>     - commit-per-subsystem changed a lot. it's a draft, don't bother too
>>       much with it
>>     - coccinelle: add support of error_propagate_prepend
>>
>> 27-126: generated patches
>>
>> ====
>>
>> Here is a proposal of auto propagation for local_err, to not call
>> error_propagate on every exit point, when we deal with local_err.
>>
>> There are also two issues with errp:
>>
>> 1. error_fatal & error_append_hint/error_prepend: user can't see this
>> additional info, because exit() happens in error_setg earlier than info
>> is added. [Reported by Greg Kurz]
>>
>> 2. error_abort & error_propagate: when we wrap
>> error_abort by local_err+error_propagate, resulting coredump will
>> refer to error_propagate and not to the place where error happened.
>> (the macro itself don't fix the issue, but it allows to [3.] drop all
>> local_err+error_propagate pattern, which will definitely fix the issue)
>> [Reported by Kevin Wolf]
>>
>> ====
>>
>> Generated patches split:
>>
>> misc
>>     hw/misc/ivshmem.c
>>     hw/misc/tmp105.c
>>     hw/misc/tmp421.c
>> s390x
>>     hw/intc/s390_flic_kvm.c
>>     hw/s390x/3270-ccw.c
>>     hw/s390x/css-bridge.c
>>     hw/s390x/css.c
>>     hw/s390x/s390-skeys.c
>>     hw/s390x/s390-virtio-ccw.c
>>     hw/s390x/sclp.c
>>     hw/s390x/tod-kvm.c
>>     hw/vfio/ccw.c
>>     target/s390x/cpu.c
>> tcg
>>     exec.c
>>     hw/arm/armv7m.c
>>     hw/arm/smmu-common.c
>>     hw/arm/smmuv3.c
>>     hw/cpu/a15mpcore.c
>>     hw/cpu/a9mpcore.c
>>     hw/cpu/arm11mpcore.c
>>     hw/i386/pc.c
>>     hw/intc/nios2_iic.c
>>     hw/mips/cps.c
>>     hw/riscv/riscv_hart.c
>>     hw/riscv/sifive_e.c
>>     hw/riscv/sifive_u.c
>>     hw/sd/milkymist-memcard.c
>>     target/alpha/cpu.c
>>     target/arm/cpu.c
>>     target/arm/cpu64.c
>>     target/cris/cpu.c
>>     target/hppa/cpu.c
>>     target/i386/cpu.c
>>     target/lm32/cpu.c
>>     target/m68k/cpu.c
>>     target/microblaze/cpu.c
>>     target/mips/cpu.c
>>     target/moxie/cpu.c
>>     target/nios2/cpu.c
>>     target/openrisc/cpu.c
>>     target/ppc/compat.c
>>     target/ppc/translate_init.inc.c
>>     target/riscv/cpu.c
>>     target/sh4/cpu.c
>>     target/sparc/cpu.c
>>     target/tricore/cpu.c
>>     target/unicore32/cpu.c
>>     target/xtensa/cpu.c
>> kvm
>>     target/ppc/kvm.c
>>     target/s390x/cpu_models.c
>> xen
>>     hw/block/dataplane/xen-block.c
>>     hw/block/xen-block.c
>>     hw/xen/xen-backend.c
>>     hw/xen/xen-bus.c
>>     hw/xen/xen-host-pci-device.c
>>     hw/xen/xen_pt.c
>>     hw/xen/xen_pt_config_init.c
>> Hosts
>>     qga/commands-win32.c
>>     util/oslib-posix.c
>> ARM Machines
>>     hw/arm/allwinner-a10.c
>>     hw/arm/aspeed_soc.c
>>     hw/arm/bcm2835_peripherals.c
>>     hw/arm/bcm2836.c
>>     hw/arm/digic.c
>>     hw/arm/fsl-imx25.c
>>     hw/arm/fsl-imx31.c
>>     hw/arm/fsl-imx6.c
>>     hw/arm/integratorcp.c
>>     hw/arm/msf2-soc.c
>>     hw/arm/nrf51_soc.c
>>     hw/arm/stm32f205_soc.c
>>     hw/arm/virt.c
>>     hw/arm/xlnx-versal-virt.c
>>     hw/arm/xlnx-zynqmp.c
>>     hw/cpu/realview_mpcore.c
>>     hw/display/bcm2835_fb.c
>>     hw/dma/bcm2835_dma.c
>>     hw/dma/xilinx_axidma.c
>>     hw/gpio/aspeed_gpio.c
>>     hw/gpio/bcm2835_gpio.c
>>     hw/intc/arm_gic.c
>>     hw/intc/arm_gic_kvm.c
>>     hw/intc/arm_gicv3.c
>>     hw/intc/arm_gicv3_its_kvm.c
>>     hw/intc/arm_gicv3_kvm.c
>>     hw/intc/armv7m_nvic.c
>>     hw/intc/realview_gic.c
>>     hw/microblaze/xlnx-zynqmp-pmu.c
>>     hw/misc/bcm2835_mbox.c
>>     hw/misc/bcm2835_property.c
>>     hw/misc/msf2-sysreg.c
>>     hw/net/xilinx_axienet.c
>>     hw/nvram/nrf51_nvm.c
>>     hw/timer/aspeed_timer.c
>>     hw/watchdog/wdt_aspeed.c
>> MIPS Machines
>>     hw/core/loader-fit.c
>> PowerPC Machines
>>     hw/intc/pnv_xive.c
>>     hw/intc/xics.c
>>     hw/intc/xics_kvm.c
>>     hw/intc/xics_pnv.c
>>     hw/intc/xics_spapr.c
>>     hw/isa/pc87312.c
>>     hw/misc/macio/macio.c
>>     hw/ppc/e500.c
>>     hw/ppc/mac_newworld.c
>>     hw/ppc/pnv.c
>>     hw/ppc/pnv_core.c
>>     hw/ppc/pnv_homer.c
>>     hw/ppc/pnv_lpc.c
>>     hw/ppc/pnv_occ.c
>>     hw/ppc/pnv_psi.c
>>     hw/ppc/spapr.c
>>     hw/ppc/spapr_caps.c
>>     hw/ppc/spapr_cpu_core.c
>>     hw/ppc/spapr_drc.c
>>     hw/ppc/spapr_irq.c
>>     hw/ppc/spapr_pci.c
>>     hw/ppc/spapr_vio.c
>> SPARC Machines
>>     hw/sparc/sun4m.c
>>     hw/sparc64/sun4u.c
>> S390 Machines
>>     hw/s390x/ipl.c
>>     hw/s390x/s390-pci-bus.c
>> X86 Machines
>>     hw/acpi/ich9.c
>>     hw/char/debugcon.c
>>     hw/char/serial-pci-multi.c
>>     hw/char/serial-pci.c
>>     hw/core/machine.c
>>     hw/core/numa.c
>>     hw/intc/apic_common.c
>>     hw/pci-host/piix.c
>> IDE
>>     hw/ide/qdev.c
>> Floppy
>>     hw/block/fdc.c
>> IPack
>>     hw/ipack/ipack.c
>> PCI
>>     hw/pci-bridge/gen_pcie_root_port.c
>>     hw/pci-bridge/pci_bridge_dev.c
>>     hw/pci-bridge/pci_expander_bridge.c
>>     hw/pci-bridge/pcie_pci_bridge.c
>>     hw/pci-bridge/pcie_root_port.c
>>     hw/pci/pci.c
>>     hw/pci/pcie.c
>>     hw/pci/shpc.c
>> ACPI/SMBIOS
>>     hw/acpi/core.c
>>     hw/acpi/cpu_hotplug.c
>>     hw/acpi/memory_hotplug.c
>>     hw/mem/memory-device.c
>>     hw/mem/pc-dimm.c
>>     hw/smbios/smbios.c
>> Network devices
>>     hw/net/dp8393x.c
>>     hw/net/ne2000-isa.c
>> pflash
>>     hw/block/pflash_cfi01.c
>>     hw/block/pflash_cfi02.c
>> SCSI
>>     hw/scsi/esp-pci.c
>>     hw/scsi/mptsas.c
>>     hw/scsi/scsi-bus.c
>>     hw/scsi/scsi-disk.c
>>     hw/scsi/scsi-generic.c
>>     hw/scsi/virtio-scsi.c
>> SD (Secure Card)
>>     hw/sd/sdhci-pci.c
>>     hw/sd/sdhci.c
>> USB
>>     hw/usb/bus.c
>>     hw/usb/ccid-card-emulated.c
>>     hw/usb/dev-smartcard-reader.c
>>     hw/usb/dev-storage.c
>>     hw/usb/hcd-ohci-pci.c
>>     hw/usb/hcd-ohci.c
>>     hw/usb/hcd-uhci.c
>>     hw/usb/hcd-xhci.c
>> USB (serial adapter)
>>     hw/usb/dev-serial.c
>> VFIO
>>     hw/vfio/common.c
>>     hw/vfio/pci-quirks.c
>>     hw/vfio/pci.c
>>     hw/vfio/platform.c
>> vfio-ccw
>>     hw/s390x/s390-ccw.c
>> vhost
>>     hw/block/vhost-user-blk.c
>>     hw/scsi/vhost-scsi.c
>>     hw/scsi/vhost-user-scsi.c
>>     hw/virtio/vhost-vsock.c
>> virtio
>>     hw/virtio/virtio-balloon.c
>>     hw/virtio/virtio-bus.c
>>     hw/virtio/virtio-pci.c
>>     hw/virtio/virtio-rng-pci.c
>>     hw/virtio/virtio.c
>> virtio-9p
>>     hw/9pfs/9p-local.c
>>     hw/9pfs/9p.c
>> virtio-blk
>>     hw/block/dataplane/virtio-blk.c
>>     hw/block/virtio-blk.c
>> virtio-ccw
>>     hw/s390x/virtio-ccw-crypto.c
>>     hw/s390x/virtio-ccw-rng.c
>>     hw/s390x/virtio-ccw.c
>> virtio-input
>>     hw/input/virtio-input.c
>> virtio-serial
>>     hw/char/virtio-serial-bus.c
>> virtio-rng
>>     backends/rng.c
>>     hw/virtio/virtio-rng.c
>> megasas
>>     hw/scsi/megasas.c
>> NVDIMM
>>     hw/mem/nvdimm.c
>> eepro100
>>     hw/net/eepro100.c
>> virtio-gpu
>>     hw/display/virtio-gpu-base.c
>>     hw/display/virtio-gpu-pci.c
>>     hw/display/virtio-vga.c
>> fw_cfg
>>     hw/nvram/fw_cfg.c
>> XIVE
>>     hw/intc/spapr_xive.c
>>     hw/intc/spapr_xive_kvm.c
>>     hw/intc/xive.c
>> Audio
>>     audio/audio.c
>>     hw/audio/intel-hda.c
>> block
>>     block.c
>>     block/backup.c
>>     block/block-backend.c
>>     block/commit.c
>>     block/crypto.c
>>     block/dirty-bitmap.c
>>     block/io.c
>>     block/mirror.c
>>     block/qapi.c
>>     block/snapshot.c
>>     block/throttle-groups.c
>>     block/throttle.c
>>     block/vxhs.c
>>     blockdev.c
>>     blockjob.c
>>     hw/block/onenand.c
>>     job.c
>> scsi
>>     scsi/pr-manager-helper.c
>> chardev
>>     chardev/char-socket.c
>>     chardev/char.c
>>     chardev/spice.c
>> cmdline
>>     util/qemu-option.c
>> Dump
>>     dump/dump.c
>>     dump/win_dump.c
>> Memory API
>>     memory.c
>> SPICE
>>     hw/display/qxl.c
>> Graphics
>>     ui/input-barrier.c
>>     ui/input.c
>>     ui/vnc.c
>> Main loop
>>     util/main-loop.c
>>     vl.c
>> Human Monitor (HMP)
>>     monitor/misc.c
>> net
>>     net/can/can_host.c
>>     net/dump.c
>>     net/filter-buffer.c
>>     net/filter.c
>>     net/net.c
>>     net/netmap.c
>>     net/tap.c
>> hostmem
>>     backends/hostmem-file.c
>>     backends/hostmem-memfd.c
>>     backends/hostmem.c
>> cryptodev
>>     backends/cryptodev-vhost-user.c
>>     backends/cryptodev.c
>> QAPI
>>     qapi/qapi-visit-core.c
>>     qapi/qmp-dispatch.c
>>     qapi/string-input-visitor.c
>> qga
>>     qga/commands-posix.c
>> QOM
>>     hw/core/qdev-properties-system.c
>>     hw/core/qdev-properties.c
>>     hw/core/qdev.c
>>     qdev-monitor.c
>>     qom/object.c
>>     qom/object_interfaces.c
>>     qom/qom-qobject.c
>> QMP
>>     monitor/qmp-cmds.c
>> SLIRP
>>     net/slirp.c
>> Tracing
>>     trace/qmp.c
>> TPM
>>     hw/tpm/tpm_util.c
>>     tpm.c
>> Migration
>>     migration/migration.c
>>     migration/ram.c
>>     migration/rdma.c
>>     migration/savevm.c
>>     migration/socket.c
>> Cryptography
>>     crypto/block-luks.c
>>     crypto/secret.c
>>     crypto/tlssession.c
>> I/O Channels
>>     io/dns-resolver.c
>>     io/net-listener.c
>> Sockets
>>     util/qemu-sockets.c
>> colo
>>     migration/colo.c
>> Record/replay
>>     block/blkreplay.c
>> VMDK
>>     block/vmdk.c
>> RBD
>>     block/rbd.c
>> Sheepdog
>>     block/sheepdog.c
>> VHDX
>>     block/vhdx-log.c
>>     block/vhdx.c
>> VDI
>>     block/vdi.c
>> iSCSI
>>     block/iscsi.c
>> nbd
>>     include/block/nbd.h
>>     block/nbd.c
>>     nbd/client.c
>>     nbd/server.c
>> NFS
>>     block/nfs.c
>> SSH
>>     block/ssh.c
>> CURL
>>     block/curl.c
>> GLUSTER
>>     block/gluster.c
>> NVMe Block Driver
>>     block/nvme.c
>> Bootdevice
>>     bootdevice.c
>> Quorum
>>     block/quorum.c
>> blklogwrites
>>     block/blklogwrites.c
>> blkverify
>>     block/blkverify.c
>> parallels
>>     block/parallels.c
>> qed
>>     block/qed.c
>> raw
>>     block/file-posix.c
>>     block/file-win32.c
>>     block/raw-format.c
>> qcow2
>>     block/qcow2-bitmap.c
>>     block/qcow2.c
>> qcow
>>     block/qcow.c
>> blkdebug
>>     block/blkdebug.c
>> vpc
>>     block/vpc.c
>> vvfat
>>     block/vvfat.c
>> Replication
>>     block/replication.c
>>     replication.c
>> PVRDMA
>>     hw/rdma/vmw/pvrdma_main.c
>> hw/core/bus.c
>>     hw/core/bus.c
>> hw/cpu/core.c
>>     hw/cpu/core.c
>> hw/sd/ssi-sd.c
>>     hw/sd/ssi-sd.c
>> iothread.c
>>     iothread.c
>> memory_mapping.c
>>     memory_mapping.c
>> target/tilegx/cpu.c
>>     target/tilegx/cpu.c
>> tests/test-image-locking.c
>>     tests/test-image-locking.c
>> util/qemu-config.c
>>     util/qemu-config.c
>>
>>
>> Vladimir Sementsov-Ogievskiy (126):
>>    hw/core/loader-fit: fix freeing errp in fit_load_fdt
>>    net/net: Clean up variable shadowing in net_client_init()
>>    error: rename errp to errp_in where it is IN-argument
>>    hmp: drop Error pointer indirection in hmp_handle_error
>>    vnc: drop Error pointer indirection in vnc_client_io_error
>>    qdev-monitor: well form error hint helpers
>>    nbd: well form nbd_iter_channel_error errp handler
>>    ppc: well form kvmppc_hint_smt_possible error hint helper
>>    9pfs: well form error hint helpers
>>    hw/core/qdev: cleanup Error ** variables
>>    block/snapshot: rename Error ** parameter to more common errp
>>    hw/i386/amd_iommu: rename Error ** parameter to more common errp
>>    qga: rename Error ** parameter to more common errp
>>    monitor/qmp-cmds: rename Error ** parameter to more common errp
>>    hw/s390x: rename Error ** parameter to more common errp
>>    hw/sd: rename Error ** parameter to more common errp
>>    hw/tpm: rename Error ** parameter to more common errp
>>    hw/usb: rename Error ** parameter to more common errp
>>    include/block/snapshot.h: rename Error ** parameter to more common
>>      errp
>>    include/qom/object.h: rename Error ** parameter to more common errp
>>    qapi/error: add (Error **errp) cleaning APIs
>>    backends/cryptodev: drop local_err from cryptodev_backend_complete()
>>    hw/vfio/ap: drop local_err from vfio_ap_realize
>>    error: auto propagated local_err
>>    scripts: add coccinelle script to use auto propagated errp
>>    python: add commit-per-subsystem.py
>>    misc: introduce ERRP_AUTO_PROPAGATE
>>    s390x: introduce ERRP_AUTO_PROPAGATE
>>    tcg: introduce ERRP_AUTO_PROPAGATE
>>    kvm: introduce ERRP_AUTO_PROPAGATE
>>    xen: introduce ERRP_AUTO_PROPAGATE
>>    Hosts: introduce ERRP_AUTO_PROPAGATE
>>    ARM Machines: introduce ERRP_AUTO_PROPAGATE
>>    MIPS Machines: introduce ERRP_AUTO_PROPAGATE
>>    PowerPC Machines: introduce ERRP_AUTO_PROPAGATE
>>    SPARC Machines: introduce ERRP_AUTO_PROPAGATE
>>    S390 Machines: introduce ERRP_AUTO_PROPAGATE
>>    X86 Machines: introduce ERRP_AUTO_PROPAGATE
>>    IDE: introduce ERRP_AUTO_PROPAGATE
>>    Floppy: introduce ERRP_AUTO_PROPAGATE
>>    IPack: introduce ERRP_AUTO_PROPAGATE
>>    PCI: introduce ERRP_AUTO_PROPAGATE
>>    ACPI/SMBIOS: introduce ERRP_AUTO_PROPAGATE
>>    Network devices: introduce ERRP_AUTO_PROPAGATE
>>    pflash: introduce ERRP_AUTO_PROPAGATE
>>    SCSI: introduce ERRP_AUTO_PROPAGATE
>>    SD (Secure Card): introduce ERRP_AUTO_PROPAGATE
>>    USB: introduce ERRP_AUTO_PROPAGATE
>>    USB (serial adapter): introduce ERRP_AUTO_PROPAGATE
>>    VFIO: introduce ERRP_AUTO_PROPAGATE
>>    vfio-ccw: introduce ERRP_AUTO_PROPAGATE
>>    vhost: introduce ERRP_AUTO_PROPAGATE
>>    virtio: introduce ERRP_AUTO_PROPAGATE
>>    virtio-9p: introduce ERRP_AUTO_PROPAGATE
>>    virtio-blk: introduce ERRP_AUTO_PROPAGATE
>>    virtio-ccw: introduce ERRP_AUTO_PROPAGATE
>>    virtio-input: introduce ERRP_AUTO_PROPAGATE
>>    virtio-serial: introduce ERRP_AUTO_PROPAGATE
>>    virtio-rng: introduce ERRP_AUTO_PROPAGATE
>>    megasas: introduce ERRP_AUTO_PROPAGATE
>>    NVDIMM: introduce ERRP_AUTO_PROPAGATE
>>    eepro100: introduce ERRP_AUTO_PROPAGATE
>>    virtio-gpu: introduce ERRP_AUTO_PROPAGATE
>>    fw_cfg: introduce ERRP_AUTO_PROPAGATE
>>    XIVE: introduce ERRP_AUTO_PROPAGATE
>>    Audio: introduce ERRP_AUTO_PROPAGATE
>>    block: introduce ERRP_AUTO_PROPAGATE
>>    scsi: introduce ERRP_AUTO_PROPAGATE
>>    chardev: introduce ERRP_AUTO_PROPAGATE
>>    cmdline: introduce ERRP_AUTO_PROPAGATE
>>    Dump: introduce ERRP_AUTO_PROPAGATE
>>    Memory API: introduce ERRP_AUTO_PROPAGATE
>>    SPICE: introduce ERRP_AUTO_PROPAGATE
>>    Graphics: introduce ERRP_AUTO_PROPAGATE
>>    Main loop: introduce ERRP_AUTO_PROPAGATE
>>    Human Monitor (HMP): introduce ERRP_AUTO_PROPAGATE
>>    net: introduce ERRP_AUTO_PROPAGATE
>>    hostmem: introduce ERRP_AUTO_PROPAGATE
>>    cryptodev: introduce ERRP_AUTO_PROPAGATE
>>    QAPI: introduce ERRP_AUTO_PROPAGATE
>>    qga: introduce ERRP_AUTO_PROPAGATE
>>    QOM: introduce ERRP_AUTO_PROPAGATE
>>    QMP: introduce ERRP_AUTO_PROPAGATE
>>    SLIRP: introduce ERRP_AUTO_PROPAGATE
>>    Tracing: introduce ERRP_AUTO_PROPAGATE
>>    TPM: introduce ERRP_AUTO_PROPAGATE
>>    Migration: introduce ERRP_AUTO_PROPAGATE
>>    Cryptography: introduce ERRP_AUTO_PROPAGATE
>>    I/O Channels: introduce ERRP_AUTO_PROPAGATE
>>    Sockets: introduce ERRP_AUTO_PROPAGATE
>>    colo: introduce ERRP_AUTO_PROPAGATE
>>    Record/replay: introduce ERRP_AUTO_PROPAGATE
>>    VMDK: introduce ERRP_AUTO_PROPAGATE
>>    RBD: introduce ERRP_AUTO_PROPAGATE
>>    Sheepdog: introduce ERRP_AUTO_PROPAGATE
>>    VHDX: introduce ERRP_AUTO_PROPAGATE
>>    VDI: introduce ERRP_AUTO_PROPAGATE
>>    iSCSI: introduce ERRP_AUTO_PROPAGATE
>>    nbd: introduce ERRP_AUTO_PROPAGATE
>>    NFS: introduce ERRP_AUTO_PROPAGATE
>>    SSH: introduce ERRP_AUTO_PROPAGATE
>>    CURL: introduce ERRP_AUTO_PROPAGATE
>>    GLUSTER: introduce ERRP_AUTO_PROPAGATE
>>    NVMe Block Driver: introduce ERRP_AUTO_PROPAGATE
>>    Bootdevice: introduce ERRP_AUTO_PROPAGATE
>>    Quorum: introduce ERRP_AUTO_PROPAGATE
>>    blklogwrites: introduce ERRP_AUTO_PROPAGATE
>>    blkverify: introduce ERRP_AUTO_PROPAGATE
>>    parallels: introduce ERRP_AUTO_PROPAGATE
>>    qed: introduce ERRP_AUTO_PROPAGATE
>>    raw: introduce ERRP_AUTO_PROPAGATE
>>    qcow2: introduce ERRP_AUTO_PROPAGATE
>>    qcow: introduce ERRP_AUTO_PROPAGATE
>>    blkdebug: introduce ERRP_AUTO_PROPAGATE
>>    vpc: introduce ERRP_AUTO_PROPAGATE
>>    vvfat: introduce ERRP_AUTO_PROPAGATE
>>    Replication: introduce ERRP_AUTO_PROPAGATE
>>    PVRDMA: introduce ERRP_AUTO_PROPAGATE
>>    hw/core/bus.c: introduce ERRP_AUTO_PROPAGATE
>>    hw/cpu/core.c: introduce ERRP_AUTO_PROPAGATE
>>    hw/sd/ssi-sd.c: introduce ERRP_AUTO_PROPAGATE
>>    iothread.c: introduce ERRP_AUTO_PROPAGATE
>>    memory_mapping.c: introduce ERRP_AUTO_PROPAGATE
>>    target/tilegx/cpu.c: introduce ERRP_AUTO_PROPAGATE
>>    tests/test-image-locking.c: introduce ERRP_AUTO_PROPAGATE
>>    util/qemu-config.c: introduce ERRP_AUTO_PROPAGATE
>>
>>
>> CC: Gerd Hoffmann <kraxel@redhat.com>
>> CC: "Gonglei (Arei)" <arei.gonglei@huawei.com>
>> CC: Eduardo Habkost <ehabkost@redhat.com>
>> CC: Igor Mammedov <imammedo@redhat.com>
>> CC: Laurent Vivier <lvivier@redhat.com>
>> CC: Amit Shah <amit@kernel.org>
>> CC: Kevin Wolf <kwolf@redhat.com>
>> CC: Max Reitz <mreitz@redhat.com>
>> CC: John Snow <jsnow@redhat.com>
>> CC: Ari Sundholm <ari@tuxera.com>
>> CC: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>
>> CC: Paolo Bonzini <pbonzini@redhat.com>
>> CC: Stefan Hajnoczi <stefanha@redhat.com>
>> CC: Fam Zheng <fam@euphon.net>
>> CC: Stefan Weil <sw@weilnetz.de>
>> CC: Ronnie Sahlberg <ronniesahlberg@gmail.com>
>> CC: Peter Lieven <pl@kamp.de>
>> CC: Eric Blake <eblake@redhat.com>
>> CC: "Denis V. Lunev" <den@openvz.org>
>> CC: Markus Armbruster <armbru@redhat.com>
>> CC: Alberto Garcia <berto@igalia.com>
>> CC: Jason Dillaman <dillaman@redhat.com>
>> CC: Wen Congyang <wencongyang2@huawei.com>
>> CC: Xie Changlong <xiechanglong.d@gmail.com>
>> CC: Liu Yuan <namei.unix@gmail.com>
>> CC: "Richard W.M. Jones" <rjones@redhat.com>
>> CC: Jeff Cody <codyprime@gmail.com>
>> CC: "Marc-André Lureau" <marcandre.lureau@redhat.com>
>> CC: "Daniel P. Berrangé" <berrange@redhat.com>
>> CC: Richard Henderson <rth@twiddle.net>
>> CC: Greg Kurz <groug@kaod.org>
>> CC: "Michael S. Tsirkin" <mst@redhat.com>
>> CC: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
>> CC: Beniamino Galvani <b.galvani@gmail.com>
>> CC: Peter Maydell <peter.maydell@linaro.org>
>> CC: "Cédric Le Goater" <clg@kaod.org>
>> CC: Andrew Jeffery <andrew@aj.id.au>
>> CC: Joel Stanley <joel@jms.id.au>
>> CC: Andrew Baumann <Andrew.Baumann@microsoft.com>
>> CC: "Philippe Mathieu-Daudé" <philmd@redhat.com>
>> CC: Antony Pavlov <antonynpavlov@gmail.com>
>> CC: Jean-Christophe Dubois <jcd@tribudubois.net>
>> CC: Peter Chubb <peter.chubb@nicta.com.au>
>> CC: Subbaraya Sundeep <sundeep.lkml@gmail.com>
>> CC: Eric Auger <eric.auger@redhat.com>
>> CC: Alistair Francis <alistair@alistair23.me>
>> CC: "Edgar E. Iglesias" <edgar.iglesias@gmail.com>
>> CC: Stefano Stabellini <sstabellini@kernel.org>
>> CC: Anthony Perard <anthony.perard@citrix.com>
>> CC: Paul Durrant <paul@xen.org>
>> CC: Paul Burton <pburton@wavecomp.com>
>> CC: Aleksandar Rikalo <arikalo@wavecomp.com>
>> CC: Chris Wulff <crwulff@gmail.com>
>> CC: Marek Vasut <marex@denx.de>
>> CC: David Gibson <david@gibson.dropbear.id.au>
>> CC: Cornelia Huck <cohuck@redhat.com>
>> CC: Halil Pasic <pasic@linux.ibm.com>
>> CC: Christian Borntraeger <borntraeger@de.ibm.com>
>> CC: "Hervé Poussineau" <hpoussin@reactos.org>
>> CC: Xiao Guangrong <xiaoguangrong.eric@gmail.com>
>> CC: Aurelien Jarno <aurelien@aurel32.net>
>> CC: Aleksandar Markovic <amarkovic@wavecomp.com>
>> CC: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
>> CC: Jason Wang <jasowang@redhat.com>
>> CC: Laszlo Ersek <lersek@redhat.com>
>> CC: Yuval Shaia <yuval.shaia@oracle.com>
>> CC: Palmer Dabbelt <palmer@sifive.com>
>> CC: Sagar Karandikar <sagark@eecs.berkeley.edu>
>> CC: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
>> CC: David Hildenbrand <david@redhat.com>
>> CC: Thomas Huth <thuth@redhat.com>
>> CC: Eric Farman <farman@linux.ibm.com>
>> CC: Matthew Rosato <mjrosato@linux.ibm.com>
>> CC: Hannes Reinecke <hare@suse.com>
>> CC: Michael Walle <michael@walle.cc>
>> CC: Artyom Tarasenko <atar4qemu@gmail.com>
>> CC: Stefan Berger <stefanb@linux.ibm.com>
>> CC: Samuel Thibault <samuel.thibault@ens-lyon.org>
>> CC: Alex Williamson <alex.williamson@redhat.com>
>> CC: Tony Krowiak <akrowiak@linux.ibm.com>
>> CC: Pierre Morel <pmorel@linux.ibm.com>
>> CC: Michael Roth <mdroth@linux.vnet.ibm.com>
>> CC: Hailiang Zhang <zhang.zhanghailiang@huawei.com>
>> CC: Juan Quintela <quintela@redhat.com>
>> CC: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
>> CC: Luigi Rizzo <rizzo@iet.unipi.it>
>> CC: Giuseppe Lettieri <g.lettieri@iet.unipi.it>
>> CC: Vincenzo Maffione <v.maffione@gmail.com>
>> CC: Jan Kiszka <jan.kiszka@siemens.com>
>> CC: Anthony Green <green@moxielogic.com>
>> CC: Stafford Horne <shorne@gmail.com>
>> CC: Guan Xuetao <gxt@mprc.pku.edu.cn>
>> CC: Max Filippov <jcmvbkbc@gmail.com>
>> CC: qemu-block@nongnu.org
>> CC: integration@gluster.org
>> CC: sheepdog@lists.wpkg.org
>> CC: qemu-arm@nongnu.org
>> CC: xen-devel@lists.xenproject.org
>> CC: qemu-ppc@nongnu.org
>> CC: qemu-s390x@nongnu.org
>> CC: qemu-riscv@nongnu.org
>>
>>   include/block/nbd.h                           |   1 +
>>   include/block/snapshot.h                      |   2 +-
>>   include/monitor/hmp.h                         |   2 +-
>>   include/qapi/error.h                          |  69 ++++-
>>   include/qom/object.h                          |   4 +-
>>   target/ppc/kvm_ppc.h                          |   4 +-
>>   ui/vnc.h                                      |   2 +-
>>   audio/audio.c                                 |  12 +-
>>   backends/cryptodev-vhost-user.c               |  10 +-
>>   backends/cryptodev.c                          |  25 +-
>>   backends/hostmem-file.c                       |  21 +-
>>   backends/hostmem-memfd.c                      |  18 +-
>>   backends/hostmem.c                            |  41 ++-
>>   backends/rng.c                                |   7 +-
>>   block.c                                       | 225 +++++++---------
>>   block/backup.c                                |   1 +
>>   block/blkdebug.c                              |  36 ++-
>>   block/blklogwrites.c                          |  22 +-
>>   block/blkreplay.c                             |   7 +-
>>   block/blkverify.c                             |  17 +-
>>   block/block-backend.c                         |  19 +-
>>   block/commit.c                                |   7 +-
>>   block/crypto.c                                |  14 +-
>>   block/curl.c                                  |   7 +-
>>   block/dirty-bitmap.c                          |   1 +
>>   block/file-posix.c                            |  79 +++---
>>   block/file-win32.c                            |  29 +-
>>   block/gluster.c                               |  69 +++--
>>   block/io.c                                    |  12 +-
>>   block/iscsi.c                                 |  36 ++-
>>   block/mirror.c                                |  19 +-
>>   block/nbd.c                                   |  59 ++--
>>   block/nfs.c                                   |   7 +-
>>   block/nvme.c                                  |  19 +-
>>   block/parallels.c                             |  30 +--
>>   block/qapi.c                                  |  26 +-
>>   block/qcow.c                                  |  17 +-
>>   block/qcow2-bitmap.c                          |   9 +-
>>   block/qcow2.c                                 |  98 +++----
>>   block/qed.c                                   |  18 +-
>>   block/quorum.c                                |  23 +-
>>   block/raw-format.c                            |   7 +-
>>   block/rbd.c                                   |  29 +-
>>   block/replication.c                           |  40 ++-
>>   block/sheepdog.c                              |  73 +++--
>>   block/snapshot.c                              |  20 +-
>>   block/ssh.c                                   |  12 +-
>>   block/throttle-groups.c                       |  24 +-
>>   block/throttle.c                              |   7 +-
>>   block/vdi.c                                   |  15 +-
>>   block/vhdx-log.c                              |   1 +
>>   block/vhdx.c                                  |  22 +-
>>   block/vmdk.c                                  |  41 ++-
>>   block/vpc.c                                   |  28 +-
>>   block/vvfat.c                                 |  12 +-
>>   block/vxhs.c                                  |  23 +-
>>   blockdev.c                                    | 252 ++++++++----------
>>   blockjob.c                                    |   8 +-
>>   bootdevice.c                                  |  31 +--
>>   chardev/char-socket.c                         |   7 +-
>>   chardev/char.c                                |  20 +-
>>   chardev/spice.c                               |   1 +
>>   crypto/block-luks.c                           |  56 ++--
>>   crypto/secret.c                               |  17 +-
>>   crypto/tlssession.c                           |   7 +-
>>   dump/dump-hmp-cmds.c                          |   4 +-
>>   dump/dump.c                                   | 151 +++++------
>>   dump/win_dump.c                               |  29 +-
>>   exec.c                                        |  21 +-
>>   hw/9pfs/9p-local.c                            |  12 +-
>>   hw/9pfs/9p-proxy.c                            |   5 +-
>>   hw/9pfs/9p.c                                  |   1 +
>>   hw/acpi/core.c                                |  18 +-
>>   hw/acpi/cpu_hotplug.c                         |   2 +-
>>   hw/acpi/ich9.c                                |  30 +--
>>   hw/acpi/memory_hotplug.c                      |   7 +-
>>   hw/arm/allwinner-a10.c                        |  27 +-
>>   hw/arm/armv7m.c                               |  52 ++--
>>   hw/arm/aspeed_soc.c                           |   1 +
>>   hw/arm/bcm2835_peripherals.c                  |  85 +++---
>>   hw/arm/bcm2836.c                              |  41 ++-
>>   hw/arm/digic.c                                |  22 +-
>>   hw/arm/fsl-imx25.c                            |  62 ++---
>>   hw/arm/fsl-imx31.c                            |  57 ++--
>>   hw/arm/fsl-imx6.c                             |  81 +++---
>>   hw/arm/integratorcp.c                         |   7 +-
>>   hw/arm/msf2-soc.c                             |  22 +-
>>   hw/arm/nrf51_soc.c                            |  47 ++--
>>   hw/arm/smmu-common.c                          |   7 +-
>>   hw/arm/smmuv3.c                               |   7 +-
>>   hw/arm/stm32f205_soc.c                        |  39 ++-
>>   hw/arm/virt.c                                 |   2 +
>>   hw/arm/xlnx-versal-virt.c                     |   7 +-
>>   hw/arm/xlnx-zynqmp.c                          |  86 +++---
>>   hw/audio/intel-hda.c                          |  13 +-
>>   hw/block/dataplane/virtio-blk.c               |   1 +
>>   hw/block/dataplane/xen-block.c                |  17 +-
>>   hw/block/fdc.c                                |  19 +-
>>   hw/block/onenand.c                            |   7 +-
>>   hw/block/pflash_cfi01.c                       |   7 +-
>>   hw/block/pflash_cfi02.c                       |   7 +-
>>   hw/block/vhost-user-blk.c                     |   6 +-
>>   hw/block/virtio-blk.c                         |   7 +-
>>   hw/block/xen-block.c                          | 119 ++++-----
>>   hw/char/debugcon.c                            |   7 +-
>>   hw/char/serial-pci-multi.c                    |   7 +-
>>   hw/char/serial-pci.c                          |   7 +-
>>   hw/char/virtio-serial-bus.c                   |   7 +-
>>   hw/core/bus.c                                 |  15 +-
>>   hw/core/loader-fit.c                          |   7 +-
>>   hw/core/machine-hmp-cmds.c                    |   6 +-
>>   hw/core/machine.c                             |  21 +-
>>   hw/core/numa.c                                |  51 ++--
>>   hw/core/qdev-properties-system.c              |  28 +-
>>   hw/core/qdev-properties.c                     |  89 +++----
>>   hw/core/qdev.c                                |  58 ++--
>>   hw/cpu/a15mpcore.c                            |   7 +-
>>   hw/cpu/a9mpcore.c                             |  27 +-
>>   hw/cpu/arm11mpcore.c                          |  22 +-
>>   hw/cpu/core.c                                 |  14 +-
>>   hw/cpu/realview_mpcore.c                      |  12 +-
>>   hw/display/bcm2835_fb.c                       |   6 +-
>>   hw/display/qxl.c                              |   7 +-
>>   hw/display/virtio-gpu-base.c                  |   7 +-
>>   hw/display/virtio-gpu-pci.c                   |   7 +-
>>   hw/display/virtio-vga.c                       |   7 +-
>>   hw/dma/bcm2835_dma.c                          |   6 +-
>>   hw/dma/xilinx_axidma.c                        |  22 +-
>>   hw/gpio/aspeed_gpio.c                         |   7 +-
>>   hw/gpio/bcm2835_gpio.c                        |  10 +-
>>   hw/i386/amd_iommu.c                           |  14 +-
>>   hw/i386/pc.c                                  | 120 ++++-----
>>   hw/ide/qdev.c                                 |  16 +-
>>   hw/input/virtio-input.c                       |  14 +-
>>   hw/intc/apic_common.c                         |   7 +-
>>   hw/intc/arm_gic.c                             |   7 +-
>>   hw/intc/arm_gic_kvm.c                         |  12 +-
>>   hw/intc/arm_gicv3.c                           |  12 +-
>>   hw/intc/arm_gicv3_its_kvm.c                   |   7 +-
>>   hw/intc/arm_gicv3_kvm.c                       |  17 +-
>>   hw/intc/armv7m_nvic.c                         |  12 +-
>>   hw/intc/nios2_iic.c                           |   6 +-
>>   hw/intc/pnv_xive.c                            |  15 +-
>>   hw/intc/realview_gic.c                        |   7 +-
>>   hw/intc/s390_flic_kvm.c                       |   9 +-
>>   hw/intc/spapr_xive.c                          |  12 +-
>>   hw/intc/spapr_xive_kvm.c                      |  55 ++--
>>   hw/intc/xics.c                                |  28 +-
>>   hw/intc/xics_kvm.c                            |  30 +--
>>   hw/intc/xics_pnv.c                            |   7 +-
>>   hw/intc/xics_spapr.c                          |   7 +-
>>   hw/intc/xive.c                                |  27 +-
>>   hw/ipack/ipack.c                              |   5 +-
>>   hw/isa/pc87312.c                              |   7 +-
>>   hw/mem/memory-device.c                        |  20 +-
>>   hw/mem/nvdimm.c                               |  25 +-
>>   hw/mem/pc-dimm.c                              |  23 +-
>>   hw/microblaze/xlnx-zynqmp-pmu.c               |  12 +-
>>   hw/mips/cps.c                                 |  46 ++--
>>   hw/misc/bcm2835_mbox.c                        |   6 +-
>>   hw/misc/bcm2835_property.c                    |  10 +-
>>   hw/misc/ivshmem.c                             |  37 ++-
>>   hw/misc/macio/macio.c                         |  68 ++---
>>   hw/misc/msf2-sysreg.c                         |   1 +
>>   hw/misc/tmp105.c                              |   7 +-
>>   hw/misc/tmp421.c                              |   7 +-
>>   hw/net/dp8393x.c                              |   7 +-
>>   hw/net/eepro100.c                             |   7 +-
>>   hw/net/ne2000-isa.c                           |  17 +-
>>   hw/net/xilinx_axienet.c                       |  22 +-
>>   hw/nvram/fw_cfg.c                             |  14 +-
>>   hw/nvram/nrf51_nvm.c                          |   7 +-
>>   hw/pci-bridge/gen_pcie_root_port.c            |   7 +-
>>   hw/pci-bridge/pci_bridge_dev.c                |  13 +-
>>   hw/pci-bridge/pci_expander_bridge.c           |   7 +-
>>   hw/pci-bridge/pcie_pci_bridge.c               |   8 +-
>>   hw/pci-bridge/pcie_root_port.c                |   1 +
>>   hw/pci-host/piix.c                            |   7 +-
>>   hw/pci/pci.c                                  |  19 +-
>>   hw/pci/pcie.c                                 |   7 +-
>>   hw/pci/shpc.c                                 |  14 +-
>>   hw/ppc/e500.c                                 |   7 +-
>>   hw/ppc/mac_newworld.c                         |   1 +
>>   hw/ppc/pnv.c                                  | 109 ++++----
>>   hw/ppc/pnv_core.c                             |  23 +-
>>   hw/ppc/pnv_homer.c                            |   5 +-
>>   hw/ppc/pnv_lpc.c                              |  26 +-
>>   hw/ppc/pnv_occ.c                              |   5 +-
>>   hw/ppc/pnv_psi.c                              |  23 +-
>>   hw/ppc/spapr.c                                | 133 ++++-----
>>   hw/ppc/spapr_caps.c                           |  57 ++--
>>   hw/ppc/spapr_cpu_core.c                       |  36 ++-
>>   hw/ppc/spapr_drc.c                            |  48 ++--
>>   hw/ppc/spapr_irq.c                            |  98 +++----
>>   hw/ppc/spapr_pci.c                            |  97 +++----
>>   hw/ppc/spapr_vio.c                            |  12 +-
>>   hw/rdma/vmw/pvrdma_main.c                     |   1 +
>>   hw/riscv/riscv_hart.c                         |   7 +-
>>   hw/riscv/sifive_e.c                           |   7 +-
>>   hw/riscv/sifive_u.c                           |  11 +-
>>   hw/s390x/3270-ccw.c                           |  13 +-
>>   hw/s390x/css-bridge.c                         |   7 +-
>>   hw/s390x/css.c                                |   7 +-
>>   hw/s390x/event-facility.c                     |   2 +-
>>   hw/s390x/ipl.c                                |  24 +-
>>   hw/s390x/s390-ccw.c                           |  19 +-
>>   hw/s390x/s390-pci-bus.c                       |  37 ++-
>>   hw/s390x/s390-skeys.c                         |   7 +-
>>   hw/s390x/s390-stattrib.c                      |   3 +-
>>   hw/s390x/s390-virtio-ccw.c                    |  11 +-
>>   hw/s390x/sclp.c                               |  15 +-
>>   hw/s390x/tod-kvm.c                            |  14 +-
>>   hw/s390x/virtio-ccw-crypto.c                  |   7 +-
>>   hw/s390x/virtio-ccw-rng.c                     |   7 +-
>>   hw/s390x/virtio-ccw.c                         |  13 +-
>>   hw/scsi/esp-pci.c                             |   7 +-
>>   hw/scsi/megasas.c                             |  11 +-
>>   hw/scsi/mptsas.c                              |  13 +-
>>   hw/scsi/scsi-bus.c                            |  24 +-
>>   hw/scsi/scsi-disk.c                           |   8 +-
>>   hw/scsi/scsi-generic.c                        |   1 +
>>   hw/scsi/vhost-scsi.c                          |  12 +-
>>   hw/scsi/vhost-user-scsi.c                     |   7 +-
>>   hw/scsi/virtio-scsi.c                         |   7 +-
>>   hw/sd/milkymist-memcard.c                     |  11 +-
>>   hw/sd/sdhci-pci.c                             |   7 +-
>>   hw/sd/sdhci.c                                 |  23 +-
>>   hw/sd/ssi-sd.c                                |  14 +-
>>   hw/smbios/smbios.c                            |  42 ++-
>>   hw/sparc/sun4m.c                              |  21 +-
>>   hw/sparc64/sun4u.c                            |   7 +-
>>   hw/timer/aspeed_timer.c                       |   6 +-
>>   hw/tpm/tpm_emulator.c                         |   8 +-
>>   hw/tpm/tpm_util.c                             |   7 +-
>>   hw/usb/bus.c                                  |  37 ++-
>>   hw/usb/ccid-card-emulated.c                   |   1 +
>>   hw/usb/dev-network.c                          |   2 +-
>>   hw/usb/dev-serial.c                           |   7 +-
>>   hw/usb/dev-smartcard-reader.c                 |  14 +-
>>   hw/usb/dev-storage.c                          |  17 +-
>>   hw/usb/hcd-ohci-pci.c                         |   7 +-
>>   hw/usb/hcd-ohci.c                             |  14 +-
>>   hw/usb/hcd-uhci.c                             |   7 +-
>>   hw/usb/hcd-xhci.c                             |  13 +-
>>   hw/vfio/ap.c                                  |  16 +-
>>   hw/vfio/ccw.c                                 |  24 +-
>>   hw/vfio/common.c                              |   3 +
>>   hw/vfio/pci-quirks.c                          |   8 +-
>>   hw/vfio/pci.c                                 |  42 ++-
>>   hw/vfio/platform.c                            |   1 +
>>   hw/virtio/vhost-vsock.c                       |   1 +
>>   hw/virtio/virtio-balloon.c                    |  35 ++-
>>   hw/virtio/virtio-bus.c                        |  17 +-
>>   hw/virtio/virtio-pci.c                        |   2 +
>>   hw/virtio/virtio-rng-pci.c                    |   7 +-
>>   hw/virtio/virtio-rng.c                        |   7 +-
>>   hw/virtio/virtio.c                            |  19 +-
>>   hw/watchdog/wdt_aspeed.c                      |   5 +-
>>   hw/xen/xen-backend.c                          |   7 +-
>>   hw/xen/xen-bus.c                              |  92 +++----
>>   hw/xen/xen-host-pci-device.c                  |  27 +-
>>   hw/xen/xen_pt.c                               |  25 +-
>>   hw/xen/xen_pt_config_init.c                   |  20 +-
>>   io/dns-resolver.c                             |   7 +-
>>   io/net-listener.c                             |   7 +-
>>   iothread.c                                    |  27 +-
>>   job.c                                         |   7 +-
>>   memory.c                                      |  63 ++---
>>   memory_mapping.c                              |   7 +-
>>   migration/colo.c                              |  38 ++-
>>   migration/migration.c                         |  39 ++-
>>   migration/ram.c                               |  13 +-
>>   migration/rdma.c                              |  13 +-
>>   migration/savevm.c                            |   2 +
>>   migration/socket.c                            |  18 +-
>>   monitor/hmp-cmds.c                            | 155 ++++++-----
>>   monitor/misc.c                                |   9 +-
>>   monitor/qmp-cmds.c                            |   9 +-
>>   nbd/client.c                                  |   5 +
>>   nbd/server.c                                  |   5 +
>>   net/can/can_host.c                            |   7 +-
>>   net/dump.c                                    |  15 +-
>>   net/filter-buffer.c                           |  15 +-
>>   net/filter.c                                  |   7 +-
>>   net/net.c                                     |  58 ++--
>>   net/netmap.c                                  |   7 +-
>>   net/slirp.c                                   |   7 +-
>>   net/tap.c                                     |  47 ++--
>>   qapi/qapi-visit-core.c                        |  56 ++--
>>   qapi/qmp-dispatch.c                           |   7 +-
>>   qapi/string-input-visitor.c                   |   7 +-
>>   qdev-monitor.c                                |  69 +++--
>>   qga/commands-posix.c                          | 222 +++++++--------
>>   qga/commands-win32.c                          | 141 +++++-----
>>   qga/commands.c                                |  12 +-
>>   qom/object.c                                  | 246 ++++++++---------
>>   qom/object_interfaces.c                       |  27 +-
>>   qom/qom-hmp-cmds.c                            |   4 +-
>>   qom/qom-qobject.c                             |   7 +-
>>   replication.c                                 |  28 +-
>>   scsi/pr-manager-helper.c                      |   7 +-
>>   target/alpha/cpu.c                            |   7 +-
>>   target/arm/cpu.c                              |   7 +-
>>   target/arm/cpu64.c                            |  11 +-
>>   target/cris/cpu.c                             |   7 +-
>>   target/hppa/cpu.c                             |   7 +-
>>   target/i386/cpu.c                             | 117 ++++----
>>   target/lm32/cpu.c                             |   7 +-
>>   target/m68k/cpu.c                             |   7 +-
>>   target/microblaze/cpu.c                       |   7 +-
>>   target/mips/cpu.c                             |   7 +-
>>   target/moxie/cpu.c                            |   7 +-
>>   target/nios2/cpu.c                            |   7 +-
>>   target/openrisc/cpu.c                         |   7 +-
>>   target/ppc/compat.c                           |  20 +-
>>   target/ppc/kvm.c                              |  14 +-
>>   target/ppc/translate_init.inc.c               |  26 +-
>>   target/riscv/cpu.c                            |   7 +-
>>   target/s390x/cpu.c                            |  26 +-
>>   target/s390x/cpu_models.c                     |   2 +
>>   target/sh4/cpu.c                              |   7 +-
>>   target/sparc/cpu.c                            |  14 +-
>>   target/tilegx/cpu.c                           |   7 +-
>>   target/tricore/cpu.c                          |   7 +-
>>   target/unicore32/cpu.c                        |   7 +-
>>   target/xtensa/cpu.c                           |   7 +-
>>   tests/test-image-locking.c                    |   7 +-
>>   tpm.c                                         |   7 +-
>>   trace/qmp.c                                   |  14 +-
>>   ui/input-barrier.c                            |   7 +-
>>   ui/input.c                                    |  14 +-
>>   ui/vnc.c                                      |  39 ++-
>>   util/error.c                                  |  30 +--
>>   util/main-loop.c                              |   5 +-
>>   util/oslib-posix.c                            |   6 +-
>>   util/qemu-config.c                            |  29 +-
>>   util/qemu-option.c                            |  59 ++--
>>   util/qemu-sockets.c                           |  31 +--
>>   vl.c                                          |  14 +-
>>   python/commit-per-subsystem.py                | 204 ++++++++++++++
>>   scripts/coccinelle/auto-propagated-errp.cocci | 118 ++++++++
>>   341 files changed, 3851 insertions(+), 4455 deletions(-)
>>   create mode 100755 python/commit-per-subsystem.py
>>   create mode 100644 scripts/coccinelle/auto-propagated-errp.cocci
>>
> 
>
Eric Blake Nov. 20, 2019, 12:59 p.m. UTC | #7
On 11/20/19 3:50 AM, Vladimir Sementsov-Ogievskiy wrote:
> Okay...
> 
> I think that:
> 
> 1. A lot of efforts (not only my, I think reviewing is already exceeded generation efforts)
>     are made, it would be sad to lose them.
> 
> 2. It's safe enough to apply only part of generated patches: we just fix error_abort/error_fatal
>     in more popular subsystems, what's wrong with that? Why not to cover 80% cases by 20% efforts?
> 
> 3. It's obviously impossible to merge the whole series. A lot of time passed, series diverges.
> 
> 
> So I propose the following plan:
> 
> 1. I resend small separate series of preparation patches per maintainer. They are good anyway.
> 
> 2. We commit patch with macro (changing MUST to SHOULD in documentation) and coccinelle script.
>      (or that may be combined with the first series from [3.])
> 
> 3. When one of preparations taken to maintainer's tree, I send generated patches for
>      its maintainer.

I'd still prefer waiting for direction from Markus.  We've been tied up 
by other things (KVM Forum, 4.2 release), but now that we are in freeze, 
this is actually a GOOD time for Markus to finally get back to this 
series, and there is going to be less rebasing needed if we can apply 
the entire cleanup right as 5.0 development opens in a couple of weeks.


> 
> 
> If no objections during a week, I'll start that plan, hope someone will support it.
> 
>
Kevin Wolf Nov. 20, 2019, 1:13 p.m. UTC | #8
Am 20.11.2019 um 13:59 hat Eric Blake geschrieben:
> On 11/20/19 3:50 AM, Vladimir Sementsov-Ogievskiy wrote:
> > Okay...
> > 
> > I think that:
> > 
> > 1. A lot of efforts (not only my, I think reviewing is already exceeded generation efforts)
> >     are made, it would be sad to lose them.
> > 
> > 2. It's safe enough to apply only part of generated patches: we just fix error_abort/error_fatal
> >     in more popular subsystems, what's wrong with that? Why not to cover 80% cases by 20% efforts?
> > 
> > 3. It's obviously impossible to merge the whole series. A lot of time passed, series diverges.
> > 
> > 
> > So I propose the following plan:
> > 
> > 1. I resend small separate series of preparation patches per maintainer. They are good anyway.
> > 
> > 2. We commit patch with macro (changing MUST to SHOULD in documentation) and coccinelle script.
> >      (or that may be combined with the first series from [3.])
> > 
> > 3. When one of preparations taken to maintainer's tree, I send generated patches for
> >      its maintainer.
> 
> I'd still prefer waiting for direction from Markus.  We've been tied up by
> other things (KVM Forum, 4.2 release), but now that we are in freeze, this
> is actually a GOOD time for Markus to finally get back to this series, and
> there is going to be less rebasing needed if we can apply the entire cleanup
> right as 5.0 development opens in a couple of weeks.

Actually, that's possibly the worst possible time for avoiding conflicts
because during freeze, maintainers are collecting stuff in private
branches for weeks without getting it into master.

If you are the one who gets merged first (what are the odds?), that
solves the problem for you, but then everyone else will get conflicts.

I like Vladimir's new plan.

Kevin
Markus Armbruster Nov. 28, 2019, 8:54 a.m. UTC | #9
Please accept my sincere apologies for taking so long to reply.  A few
thoughts before I dig deeper.

Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> writes:

> Hi all!
>
> At the request of Markus: full version of errp propagation. Let's look
> at it. Cover as much as possible, except inserting macro invocation
> where it's not necessary.
>
> It's huge, and so it's an RFC.

It's a monster.  Best to get it into full view before we commit to
fighting it.

> In v5 I've added a lot more preparation cleanups:
> 01-23 are preparation cleanups
>   01: not changed, keep Eric's r-b
>   02: improve commit msg [Markus], keep Eric's r-b
>   03: changed, only error API here, drop r-b
> 24 is core macro
>   - improve cover letter, wording and macro code style
>   - keep Eric's r-b
> 25-26: automation scripts
>    - commit-per-subsystem changed a lot. it's a draft, don't bother too
>      much with it
>    - coccinelle: add support of error_propagate_prepend
>
> 27-126: generated patches

Splitting up the monster can make fighting it easier.

Your description suggests three high-level parts:

Part 1: Preparation (makes sense by itself)
Part 2: Error interface update (with rules what code should do now)
Part 3: Make the code obey the new rules everywhere

I hope we can get part 1 out of the way quickly.  Diffstat:

 backends/cryptodev.c       |  11 +---
 block/nbd.c                |  10 +--
 block/snapshot.c           |   4 +-
 dump/dump-hmp-cmds.c       |   4 +-
 hw/9pfs/9p-local.c         |   4 +-
 hw/9pfs/9p-proxy.c         |   5 +-
 hw/core/loader-fit.c       |   5 +-
 hw/core/machine-hmp-cmds.c |   6 +-
 hw/core/qdev.c             |  28 ++++----
 hw/i386/amd_iommu.c        |  14 ++--
 hw/ppc/spapr.c             |   2 +-
 hw/s390x/event-facility.c  |   2 +-
 hw/s390x/s390-stattrib.c   |   3 +-
 hw/sd/sdhci.c              |   2 +-
 hw/tpm/tpm_emulator.c      |   8 +--
 hw/usb/dev-network.c       |   2 +-
 hw/vfio/ap.c               |  16 +----
 include/block/snapshot.h   |   2 +-
 include/monitor/hmp.h      |   2 +-
 include/qapi/error.h       |  69 ++++++++++++++++++--
 include/qom/object.h       |   4 +-
 monitor/hmp-cmds.c         | 155 ++++++++++++++++++++++-----------------------
 monitor/qmp-cmds.c         |   2 +-
 net/net.c                  |  17 ++---
 qdev-monitor.c             |  28 ++++----
 qga/commands-posix.c       |   2 +-
 qga/commands-win32.c       |   2 +-
 qga/commands.c             |  12 ++--
 qom/qom-hmp-cmds.c         |   4 +-
 target/ppc/kvm.c           |   6 +-
 target/ppc/kvm_ppc.h       |   4 +-
 ui/vnc.c                   |  20 ++----
 ui/vnc.h                   |   2 +-
 util/error.c               |  30 ++++-----
 34 files changed, 261 insertions(+), 226 deletions(-)

At first glance, I can see bug fixes, non-mechanical cleanups, and
mechanical cleanups.

Within each of these three groups, we have related sub-groups.  For
instance, several patches clean up funny names for the common Error **
parameters.  Several more rename "uncommon" Error ** parameters, to
signal their uncommon role.  I doubt splitting up these subgroups of
related mechanical changes along subsystem lines is worthwhile.

Part 2 needs careful interface review.  Having part 3 ready helps there,
because we can see rather than guess how the interface changes play out.
We really want to get this part right from the start, because if we
don't, we get to do part 3 again.

Part 3 is what makes this a monster.  I understand it's mechanical.  We
can merge it incrementally, but we do want to merge it all, and sooner
rather than later, to avoid a mix of old and new error handling code.
Such mixes inevitably confuse developers, and lead to new instances of
the old patterns creeping in.

I do have doubts about your automated split.

I acknowledge maintainers of active subsystems may want to merge this on
their own terms, to minimize disruption.  Splitting off sub-monsters for
them makes sense.  Splitting off the long tail of less busy subsystems
not so much; it'll only drag out the merging.  Your list below shows 100
parts, and chasing their maintainers is not going to be a fun
experience.

Moreover, using MAINTAINERS to guide an automatic split is a cute idea,
but it falls apart when MAINTAINERS attributes the same file to several
subsystems, which is fairly common.  A sane split requires human touch.

Instead, I'd start with big subsystems with maintainers known to be
sympathetic to this effort.  Split off their sub-monsters, get them
merged.  Iterate until the remainder can be merged in one final push.

> ====
>
> Here is a proposal of auto propagation for local_err, to not call
> error_propagate on every exit point, when we deal with local_err.

More cleverness, less code, avoids one kind of error (forgetting manual
propagate when we should), risks another kind of error (automatic
propagate when we shouldn't).  Tradeoffs, but the general feeling among
reviewers appears to be positive.

> There are also two issues with errp:
>
> 1. error_fatal & error_append_hint/error_prepend: user can't see this
> additional info, because exit() happens in error_setg earlier than info
> is added. [Reported by Greg Kurz]

Yes, broken by design, hurts users.

> 2. error_abort & error_propagate: when we wrap
> error_abort by local_err+error_propagate, resulting coredump will
> refer to error_propagate and not to the place where error happened.
> (the macro itself don't fix the issue, but it allows to [3.] drop all
> local_err+error_propagate pattern, which will definitely fix the issue)
> [Reported by Kevin Wolf]

Yes, broken by design, inconveniences developers.

> ====
>
> Generated patches split:
>
> misc
>    hw/misc/ivshmem.c
>    hw/misc/tmp105.c
>    hw/misc/tmp421.c
[99 more...]
Vladimir Sementsov-Ogievskiy Nov. 28, 2019, 9:20 a.m. UTC | #10
28.11.2019 11:54, Markus Armbruster wrote:
> Please accept my sincere apologies for taking so long to reply.  A few
> thoughts before I dig deeper.
> 
> Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> writes:
> 
>> Hi all!
>>
>> At the request of Markus: full version of errp propagation. Let's look
>> at it. Cover as much as possible, except inserting macro invocation
>> where it's not necessary.
>>
>> It's huge, and so it's an RFC.
> 
> It's a monster.  Best to get it into full view before we commit to
> fighting it.
> 
>> In v5 I've added a lot more preparation cleanups:
>> 01-23 are preparation cleanups
>>    01: not changed, keep Eric's r-b
>>    02: improve commit msg [Markus], keep Eric's r-b
>>    03: changed, only error API here, drop r-b
>> 24 is core macro
>>    - improve cover letter, wording and macro code style
>>    - keep Eric's r-b
>> 25-26: automation scripts
>>     - commit-per-subsystem changed a lot. it's a draft, don't bother too
>>       much with it
>>     - coccinelle: add support of error_propagate_prepend
>>
>> 27-126: generated patches
> 
> Splitting up the monster can make fighting it easier.
> 
> Your description suggests three high-level parts:
> 
> Part 1: Preparation (makes sense by itself)

I already resent part 1 all patches (handling review comments) in separate as v6.
If it is convenient, I can resend them in one series as v7.

> Part 2: Error interface update (with rules what code should do now)

Note, that patch 21 is actually from part2, not part1.
So Part 2 is 21, 24, 25.
So I wait for your comments and resend (if needed) as separate small series.

And 26 is auto-patch-splitter, but we don't need it now, if we are going
to start from several big subsystems.

> Part 3: Make the code obey the new rules everywhere
> 
> I hope we can get part 1 out of the way quickly.  Diffstat:
> 
>   backends/cryptodev.c       |  11 +---
>   block/nbd.c                |  10 +--
>   block/snapshot.c           |   4 +-
>   dump/dump-hmp-cmds.c       |   4 +-
>   hw/9pfs/9p-local.c         |   4 +-
>   hw/9pfs/9p-proxy.c         |   5 +-
>   hw/core/loader-fit.c       |   5 +-
>   hw/core/machine-hmp-cmds.c |   6 +-
>   hw/core/qdev.c             |  28 ++++----
>   hw/i386/amd_iommu.c        |  14 ++--
>   hw/ppc/spapr.c             |   2 +-
>   hw/s390x/event-facility.c  |   2 +-
>   hw/s390x/s390-stattrib.c   |   3 +-
>   hw/sd/sdhci.c              |   2 +-
>   hw/tpm/tpm_emulator.c      |   8 +--
>   hw/usb/dev-network.c       |   2 +-
>   hw/vfio/ap.c               |  16 +----
>   include/block/snapshot.h   |   2 +-
>   include/monitor/hmp.h      |   2 +-
>   include/qapi/error.h       |  69 ++++++++++++++++++--
>   include/qom/object.h       |   4 +-
>   monitor/hmp-cmds.c         | 155 ++++++++++++++++++++++-----------------------
>   monitor/qmp-cmds.c         |   2 +-
>   net/net.c                  |  17 ++---
>   qdev-monitor.c             |  28 ++++----
>   qga/commands-posix.c       |   2 +-
>   qga/commands-win32.c       |   2 +-
>   qga/commands.c             |  12 ++--
>   qom/qom-hmp-cmds.c         |   4 +-
>   target/ppc/kvm.c           |   6 +-
>   target/ppc/kvm_ppc.h       |   4 +-
>   ui/vnc.c                   |  20 ++----
>   ui/vnc.h                   |   2 +-
>   util/error.c               |  30 ++++-----
>   34 files changed, 261 insertions(+), 226 deletions(-)
> 
> At first glance, I can see bug fixes, non-mechanical cleanups, and
> mechanical cleanups.
> 
> Within each of these three groups, we have related sub-groups.  For
> instance, several patches clean up funny names for the common Error **
> parameters.  Several more rename "uncommon" Error ** parameters, to
> signal their uncommon role.  I doubt splitting up these subgroups of
> related mechanical changes along subsystem lines is worthwhile.
> 
> Part 2 needs careful interface review.  Having part 3 ready helps there,
> because we can see rather than guess how the interface changes play out.
> We really want to get this part right from the start, because if we
> don't, we get to do part 3 again.
> 
> Part 3 is what makes this a monster.  I understand it's mechanical.  We
> can merge it incrementally, but we do want to merge it all, and sooner
> rather than later, to avoid a mix of old and new error handling code.
> Such mixes inevitably confuse developers, and lead to new instances of
> the old patterns creeping in.
> 
> I do have doubts about your automated split.
> 
> I acknowledge maintainers of active subsystems may want to merge this on
> their own terms, to minimize disruption.  Splitting off sub-monsters for
> them makes sense.  Splitting off the long tail of less busy subsystems
> not so much; it'll only drag out the merging.  Your list below shows 100
> parts, and chasing their maintainers is not going to be a fun
> experience.
> 
> Moreover, using MAINTAINERS to guide an automatic split is a cute idea,
> but it falls apart when MAINTAINERS attributes the same file to several
> subsystems, which is fairly common.  A sane split requires human touch.
> 
> Instead, I'd start with big subsystems with maintainers known to be
> sympathetic to this effort.  Split off their sub-monsters, get them
> merged.  Iterate until the remainder can be merged in one final push.

Do you mean to send them as separate per-subsystem series, or all in one,
but limited to some subsystems?

> 
>> ====
>>
>> Here is a proposal of auto propagation for local_err, to not call
>> error_propagate on every exit point, when we deal with local_err.
> 
> More cleverness, less code, avoids one kind of error (forgetting manual
> propagate when we should), risks another kind of error (automatic
> propagate when we shouldn't).  Tradeoffs, but the general feeling among
> reviewers appears to be positive.
> 
>> There are also two issues with errp:
>>
>> 1. error_fatal & error_append_hint/error_prepend: user can't see this
>> additional info, because exit() happens in error_setg earlier than info
>> is added. [Reported by Greg Kurz]
> 
> Yes, broken by design, hurts users.
> 
>> 2. error_abort & error_propagate: when we wrap
>> error_abort by local_err+error_propagate, resulting coredump will
>> refer to error_propagate and not to the place where error happened.
>> (the macro itself don't fix the issue, but it allows to [3.] drop all
>> local_err+error_propagate pattern, which will definitely fix the issue)
>> [Reported by Kevin Wolf]
> 
> Yes, broken by design, inconveniences developers.
> 
>> ====
>>
>> Generated patches split:
>>
>> misc
>>     hw/misc/ivshmem.c
>>     hw/misc/tmp105.c
>>     hw/misc/tmp421.c
> [99 more...]
> 

Thanks!
Markus Armbruster Nov. 28, 2019, 12:21 p.m. UTC | #11
Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> writes:

> 28.11.2019 11:54, Markus Armbruster wrote:
>> Please accept my sincere apologies for taking so long to reply.  A few
>> thoughts before I dig deeper.
>> 
>> Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> writes:
>> 
>>> Hi all!
>>>
>>> At the request of Markus: full version of errp propagation. Let's look
>>> at it. Cover as much as possible, except inserting macro invocation
>>> where it's not necessary.
>>>
>>> It's huge, and so it's an RFC.
>> 
>> It's a monster.  Best to get it into full view before we commit to
>> fighting it.
>> 
>>> In v5 I've added a lot more preparation cleanups:
>>> 01-23 are preparation cleanups
>>>    01: not changed, keep Eric's r-b
>>>    02: improve commit msg [Markus], keep Eric's r-b
>>>    03: changed, only error API here, drop r-b
>>> 24 is core macro
>>>    - improve cover letter, wording and macro code style
>>>    - keep Eric's r-b
>>> 25-26: automation scripts
>>>     - commit-per-subsystem changed a lot. it's a draft, don't bother too
>>>       much with it
>>>     - coccinelle: add support of error_propagate_prepend
>>>
>>> 27-126: generated patches
>> 
>> Splitting up the monster can make fighting it easier.
>> 
>> Your description suggests three high-level parts:
>> 
>> Part 1: Preparation (makes sense by itself)
>
> I already resent part 1 all patches (handling review comments) in separate as v6.
> If it is convenient, I can resend them in one series as v7.

Recommend to await review.  The more we can merge without another
respin, the better.

>> Part 2: Error interface update (with rules what code should do now)
>
> Note, that patch 21 is actually from part2, not part1.
> So Part 2 is 21, 24, 25.

Thanks for the heads-up.

> So I wait for your comments and resend (if needed) as separate small series.
>
> And 26 is auto-patch-splitter, but we don't need it now, if we are going
> to start from several big subsystems.
>
>> Part 3: Make the code obey the new rules everywhere
>> 
>> I hope we can get part 1 out of the way quickly.  Diffstat:
>> 
>>   backends/cryptodev.c       |  11 +---
>>   block/nbd.c                |  10 +--
>>   block/snapshot.c           |   4 +-
>>   dump/dump-hmp-cmds.c       |   4 +-
>>   hw/9pfs/9p-local.c         |   4 +-
>>   hw/9pfs/9p-proxy.c         |   5 +-
>>   hw/core/loader-fit.c       |   5 +-
>>   hw/core/machine-hmp-cmds.c |   6 +-
>>   hw/core/qdev.c             |  28 ++++----
>>   hw/i386/amd_iommu.c        |  14 ++--
>>   hw/ppc/spapr.c             |   2 +-
>>   hw/s390x/event-facility.c  |   2 +-
>>   hw/s390x/s390-stattrib.c   |   3 +-
>>   hw/sd/sdhci.c              |   2 +-
>>   hw/tpm/tpm_emulator.c      |   8 +--
>>   hw/usb/dev-network.c       |   2 +-
>>   hw/vfio/ap.c               |  16 +----
>>   include/block/snapshot.h   |   2 +-
>>   include/monitor/hmp.h      |   2 +-
>>   include/qapi/error.h       |  69 ++++++++++++++++++--
>>   include/qom/object.h       |   4 +-
>>   monitor/hmp-cmds.c         | 155 ++++++++++++++++++++++-----------------------
>>   monitor/qmp-cmds.c         |   2 +-
>>   net/net.c                  |  17 ++---
>>   qdev-monitor.c             |  28 ++++----
>>   qga/commands-posix.c       |   2 +-
>>   qga/commands-win32.c       |   2 +-
>>   qga/commands.c             |  12 ++--
>>   qom/qom-hmp-cmds.c         |   4 +-
>>   target/ppc/kvm.c           |   6 +-
>>   target/ppc/kvm_ppc.h       |   4 +-
>>   ui/vnc.c                   |  20 ++----
>>   ui/vnc.h                   |   2 +-
>>   util/error.c               |  30 ++++-----
>>   34 files changed, 261 insertions(+), 226 deletions(-)
>> 
>> At first glance, I can see bug fixes, non-mechanical cleanups, and
>> mechanical cleanups.
>> 
>> Within each of these three groups, we have related sub-groups.  For
>> instance, several patches clean up funny names for the common Error **
>> parameters.  Several more rename "uncommon" Error ** parameters, to
>> signal their uncommon role.  I doubt splitting up these subgroups of
>> related mechanical changes along subsystem lines is worthwhile.
>> 
>> Part 2 needs careful interface review.  Having part 3 ready helps there,
>> because we can see rather than guess how the interface changes play out.
>> We really want to get this part right from the start, because if we
>> don't, we get to do part 3 again.
>> 
>> Part 3 is what makes this a monster.  I understand it's mechanical.  We
>> can merge it incrementally, but we do want to merge it all, and sooner
>> rather than later, to avoid a mix of old and new error handling code.
>> Such mixes inevitably confuse developers, and lead to new instances of
>> the old patterns creeping in.
>> 
>> I do have doubts about your automated split.
>> 
>> I acknowledge maintainers of active subsystems may want to merge this on
>> their own terms, to minimize disruption.  Splitting off sub-monsters for
>> them makes sense.  Splitting off the long tail of less busy subsystems
>> not so much; it'll only drag out the merging.  Your list below shows 100
>> parts, and chasing their maintainers is not going to be a fun
>> experience.
>> 
>> Moreover, using MAINTAINERS to guide an automatic split is a cute idea,
>> but it falls apart when MAINTAINERS attributes the same file to several
>> subsystems, which is fairly common.  A sane split requires human touch.
>> 
>> Instead, I'd start with big subsystems with maintainers known to be
>> sympathetic to this effort.  Split off their sub-monsters, get them
>> merged.  Iterate until the remainder can be merged in one final push.
>
> Do you mean to send them as separate per-subsystem series, or all in one,
> but limited to some subsystems?

Let's make it as easy as we can both for the subsystem maintainers and
for the people trying to track all of it.

When a subsystem takes multiple patches, I'd consider an independent
series to save the maintainer the trouble of extracting multiple patches
from a larger series.

For the ones that take just one patch, I'd consider an omnibus series.
Extracting a single patch is no harder than applying a series, but
tracking one omnibus is easier than a dozen lone patches.

There's no clear line between "busy" and "less busy" subsystem.  Just
start with some obviously busy ones, then iterate.  Each iteration
should be large enough to be worth the overhead, yet small enough not to
scare off reviewers :)

Trust your judgement!

[...]