[v2,00/12] xen: pvh: Partial QOM:fication with new x86 PVH machine

Message

Edgar E. Iglesias Aug. 20, 2024, 2:29 p.m. UTC

From: "Edgar E. Iglesias" <[e-mail]>

This series breaks out parts of the ARM PVH support into an abstract
machine that other targets can reuse.. There's a bit of refactoring
and some bug-fixes along the way.

Finally we add a new x86 xen-pvh machine.

The corresponding changes in Xen for PVH x86 are work in progress
(by Xenia Ragiadakou). You can find a current version here:
https://github.com/edgarigl/xen/tree/edgar/virtio-pvh-upstream 

I've briefly described the steps to run Xen PVH x86 guests here
(including example guest kernel config, xl.cfg and xl command-lines):
https://github.com/edgarigl/docs/blob/master/xen/pvh/xenpvh-x86.md

Cheers,
Edgar

ChangeLog:

v1 -> v2:
* Use an abstract PVH Machine to share code between arch specific
  PVH machines. This allows more sharing than a using a device component.
* Add comments describing our PCI INTX support.
* Allow the PVH target specific implementation to provide PCI
  INTX delivery via class methods.
* Clarify use of mc->max_cpus in comments.
* Use GUEST_MAX_VCPUS mc->max_cpus on ARM.
* Use HVM_MAX_VCPUS mc->max_cpus on x86.
* pvh-common: Directly use s->cfg. members when creating gpex.
* pvh-common: Clarify use of pci-ecam-size in comments.
* x86/xen-pvh: Create smp.max_cpus nr of dummy cores (not smp.cpus).
* x86/xen-pvh: Replace static array holding dummy cores with a dynamic one.
* Move stubbed Xen/ARM functions from hw/arm/xen_arm.c into xen-stubs.c

Edgar E. Iglesias (12):
  MAINTAINERS: Add docs/system/arm/xenpvh.rst
  hw/arm: xenpvh: Update file header to use SPDX
  hw/arm: xenpvh: Tweak machine description
  hw/arm: xenpvh: Add support for SMP guests
  hw/arm: xenpvh: Remove double-negation in warning
  hw/arm: xenpvh: Move stubbed functions to xen-stubs.c
  hw/arm: xenpvh: Break out a common PVH machine
  hw/arm: xenpvh: Rename xen_arm.c -> xen-pvh.c
  hw/arm: xenpvh: Reverse virtio-mmio creation order
  hw/xen: pvh-common: Add support for creating PCIe/GPEX
  hw/i386/xen: Add a Xen PVH x86 machine
  docs/system/i386: xenpvh: Add a basic description

 MAINTAINERS                     |   2 +
 docs/system/i386/xenpvh.rst     |  49 +++++
 docs/system/target-i386.rst     |   1 +
 hw/arm/meson.build              |   5 +-
 hw/arm/trace-events             |   5 -
 hw/arm/xen-pvh.c                |  89 ++++++++
 hw/arm/xen-stubs.c              |  32 +++
 hw/arm/xen_arm.c                | 267 -----------------------
 hw/i386/xen/meson.build         |   1 +
 hw/i386/xen/xen-pvh.c           | 121 +++++++++++
 hw/xen/meson.build              |   1 +
 hw/xen/trace-events             |   4 +
 hw/xen/xen-pvh-common.c         | 362 ++++++++++++++++++++++++++++++++
 include/hw/xen/xen-pvh-common.h |  88 ++++++++
 14 files changed, 754 insertions(+), 273 deletions(-)
 create mode 100644 docs/system/i386/xenpvh.rst
 create mode 100644 hw/arm/xen-pvh.c
 create mode 100644 hw/arm/xen-stubs.c
 delete mode 100644 hw/arm/xen_arm.c
 create mode 100644 hw/i386/xen/xen-pvh.c
 create mode 100644 hw/xen/xen-pvh-common.c
 create mode 100644 include/hw/xen/xen-pvh-common.h