| Message ID | 20240529234241.205053-1-salil.mehta@huawei.com (mailing list archive) |
|---|---|
| Headers | show |
| Series | Add architecture agnostic code to support vCPU Hotplug | expand |
On Thu, May 30, 2024 at 12:42:33AM +0100, Salil Mehta wrote: > Virtual CPU hotplug support is being added across various architectures[1][3]. > This series adds various code bits common across all architectures: > > 1. vCPU creation and Parking code refactor [Patch 1] > 2. Update ACPI GED framework to support vCPU Hotplug [Patch 2,3] > 3. ACPI CPUs AML code change [Patch 4,5] > 4. Helper functions to support unrealization of CPU objects [Patch 6,7] > 5. Docs [Patch 8] > > > Repository: > > [*] https://github.com/salil-mehta/qemu.git virt-cpuhp-armv8/rfc-v3.arch.agnostic.v12 > > NOTE: This series is meant to work in conjunction with Architecture specific patch-set. > For ARM, this will work in combination of the architecture specific part based on > RFC V2 [1]. This architecture specific patch-set RFC V3 shall be floated soon and is > present at below location > > [*] https://github.com/salil-mehta/qemu/tree/virt-cpuhp-armv8/rfc-v3-rc1 > Igor plan to take a look? > Revision History: > > Patch-set V11 -> V12 > 1. Addressed Harsh Prateek Bora's (IBM) comment > - Changed @cpu to @vcpu_id in the kvm_unpark_vcpu protoype header/ > 2. Added Zhao Liu's (Intel) Tested-by for whole series > - Qtest does not breaks on Intel platforms now. > 3. Added Zhao Liu's (Intel) Reviewed-by for [PATCH V11 {1/8 - 3/8}] > Link: https://lore.kernel.org/qemu-devel/ZlRSPuJGBgyEUW6w@intel.com/ > Link: https://lore.kernel.org/qemu-devel/a5f3d78e-cfed-441f-9c56-e3e78fa5edee@linux.ibm.com/ > > Patch-set V10 -> V11 > 1. Addressed Nicholas Piggin's (IBM) comment > - moved the traces in kvm_unpark_vcpu and kvm_create_vcpu at the end > - Added the Reviewed-by Tag for [PATCH V10 1/8] > 2. Addressed Alex Bennée's (Linaro) comments > - Added a note explaining dependency of the [PATCH V10 7/8] on Arch specific patch-set > Link: https://lore.kernel.org/qemu-devel/D1FS5GOOFWWK.2PNRIVL0V6DBL@gmail.com/ > Link: https://lore.kernel.org/qemu-devel/87frubi402.fsf@draig.linaro.org/ > > Patch-set V9 -> V10 > 1. Addressed Nicholas Piggin's (IBM) & Philippe Mathieu-Daudé (Linaro) comments > - carved out kvm_unpark_vcpu and added its trace > - Widened the scope of the kvm_unpark_vcpu so that it can be used by generic framework > being thought out > Link: https://lore.kernel.org/qemu-devel/20240519210620.228342-1-salil.mehta@huawei.com/ > Link: https://lore.kernel.org/qemu-devel/e94b0e14-efee-4050-9c9f-08382a36b63a@linaro.org/ > > Patch-set V8 -> V9 > 1. Addressed Vishnu Pajjuri's (Ampere) comments > - Added kvm_fd to trace in kvm_create_vcpu > - Some clean ups: arch vcpu-id and sbd variable > - Added the missed initialization of cpu->gdb_num_regs > 2. Addressed the commnet from Zhao Liu (Intel) > - Make initialization of CPU Hotplug state conditional (possible_cpu_arch_ids!=NULL) > Link: https://lore.kernel.org/qemu-devel/20240312020000.12992-1-salil.mehta@huawei.com/ > > Patch-set V7 -> V8 > 1. Rebased and Fixed the conflicts > > Patch-set V6 -> V7 > 1. Addressed Alex Bennée's comments > - Updated the docs > 2. Addressed Igor Mammedov's comments > - Merged patches [Patch V6 3/9] & [Patch V6 7/9] with [Patch V6 4/9] > - Updated commit-log of [Patch V6 1/9] and [Patch V6 5/9] > 3. Added Shaoqin Huang's Reviewed-by tags for whole series. > Link: https://lore.kernel.org/qemu-devel/20231013105129.25648-1-salil.mehta@huawei.com/ > > Patch-set V5 -> V6 > 1. Addressed Gavin Shan's comments > - Fixed the assert() ranges of address spaces > - Rebased the patch-set to latest changes in the qemu.git > - Added Reviewed-by tags for patches {8,9} > 2. Addressed Jonathan Cameron's comments > - Updated commit-log for [Patch V5 1/9] with mention of trace events > - Added Reviewed-by tags for patches {1,5} > 3. Added Tested-by tags from Xianglai Li > 4. Fixed checkpatch.pl error "Qemu -> QEMU" in [Patch V5 1/9] > Link: https://lore.kernel.org/qemu-devel/20231011194355.15628-1-salil.mehta@huawei.com/ > > Patch-set V4 -> V5 > 1. Addressed Gavin Shan's comments > - Fixed the trace events print string for kvm_{create,get,park,destroy}_vcpu > - Added Reviewed-by tag for patch {1} > 2. Added Shaoqin Huang's Reviewed-by tags for Patches {2,3} > 3. Added Tested-by Tag from Vishnu Pajjuri to the patch-set > 4. Dropped the ARM specific [Patch V4 10/10] > Link: https://lore.kernel.org/qemu-devel/20231009203601.17584-1-salil.mehta@huawei.com/ > > Patch-set V3 -> V4 > 1. Addressed David Hilderbrand's comments > - Fixed the wrong doc comment of kvm_park_vcpu API prototype > - Added Reviewed-by tags for patches {2,4} > Link: https://lore.kernel.org/qemu-devel/20231009112812.10612-1-salil.mehta@huawei.com/ > > Patch-set V2 -> V3 > 1. Addressed Jonathan Cameron's comments > - Fixed 'vcpu-id' type wrongly changed from 'unsigned long' to 'integer' > - Removed unnecessary use of variable 'vcpu_id' in kvm_park_vcpu > - Updated [Patch V2 3/10] commit-log with details of ACPI_CPU_SCAN_METHOD macro > - Updated [Patch V2 5/10] commit-log with details of conditional event handler method > - Added Reviewed-by tags for patches {2,3,4,6,7} > 2. Addressed Gavin Shan's comments > - Remove unnecessary use of variable 'vcpu_id' in kvm_par_vcpu > - Fixed return value in kvm_get_vcpu from -1 to -ENOENT > - Reset the value of 'gdb_num_g_regs' in gdb_unregister_coprocessor_all > - Fixed the kvm_{create,park}_vcpu prototypes docs > - Added Reviewed-by tags for patches {2,3,4,5,6,7,9,10} > 3. Addressed one earlier missed comment by Alex Bennée in RFC V1 > - Added traces instead of DPRINTF in the newly added and some existing functions > Link: https://lore.kernel.org/qemu-devel/20230930001933.2660-1-salil.mehta@huawei.com/ > > Patch-set V1 -> V2 > 1. Addressed Alex Bennée's comments > - Refactored the kvm_create_vcpu logic to get rid of goto > - Added the docs for kvm_{create,park}_vcpu prototypes > - Splitted the gdbstub and AddressSpace destruction change into separate patches > - Added Reviewed-by tags for patches {2,10} > Link: https://lore.kernel.org/qemu-devel/20230929124304.13672-1-salil.mehta@huawei.com/ > > References: > > [1] https://lore.kernel.org/qemu-devel/20230926100436.28284-1-salil.mehta@huawei.com/ > [2] https://lore.kernel.org/all/20230913163823.7880-1-james.morse@arm.com/ > [3] https://lore.kernel.org/qemu-devel/cover.1695697701.git.lixianglai@loongson.cn/ > > > > Salil Mehta (8): > accel/kvm: Extract common KVM vCPU {creation,parking} code > hw/acpi: Move CPU ctrl-dev MMIO region len macro to common header file > hw/acpi: Update ACPI GED framework to support vCPU Hotplug > hw/acpi: Update GED _EVT method AML with CPU scan > hw/acpi: Update CPUs AML with cpu-(ctrl)dev change > physmem: Add helper function to destroy CPU AddressSpace > gdbstub: Add helper function to unregister GDB register space > docs/specs/acpi_hw_reduced_hotplug: Add the CPU Hotplug Event Bit > > accel/kvm/kvm-all.c | 95 +++++++++++++++++--------- > accel/kvm/kvm-cpus.h | 23 +++++++ > accel/kvm/trace-events | 5 +- > docs/specs/acpi_hw_reduced_hotplug.rst | 3 +- > gdbstub/gdbstub.c | 13 ++++ > hw/acpi/acpi-cpu-hotplug-stub.c | 6 ++ > hw/acpi/cpu.c | 33 ++++++--- > hw/acpi/generic_event_device.c | 21 ++++++ > hw/core/cpu-common.c | 1 - > hw/i386/acpi-build.c | 3 +- > include/exec/cpu-common.h | 8 +++ > include/exec/gdbstub.h | 6 ++ > include/hw/acpi/cpu.h | 5 +- > include/hw/acpi/cpu_hotplug.h | 4 ++ > include/hw/acpi/generic_event_device.h | 4 ++ > include/hw/core/cpu.h | 1 + > system/physmem.c | 29 ++++++++ > 17 files changed, 212 insertions(+), 48 deletions(-) > > -- > 2.34.1
On Sun, 2 Jun 2024 18:03:05 -0400 "Michael S. Tsirkin" <mst@redhat.com> wrote: > On Thu, May 30, 2024 at 12:42:33AM +0100, Salil Mehta wrote: > > Virtual CPU hotplug support is being added across various architectures[1][3]. > > This series adds various code bits common across all architectures: > > > > 1. vCPU creation and Parking code refactor [Patch 1] > > 2. Update ACPI GED framework to support vCPU Hotplug [Patch 2,3] > > 3. ACPI CPUs AML code change [Patch 4,5] > > 4. Helper functions to support unrealization of CPU objects [Patch 6,7] > > 5. Docs [Patch 8] > > > > > > Repository: > > > > [*] https://github.com/salil-mehta/qemu.git virt-cpuhp-armv8/rfc-v3.arch.agnostic.v12 > > > > NOTE: This series is meant to work in conjunction with Architecture specific patch-set. > > For ARM, this will work in combination of the architecture specific part based on > > RFC V2 [1]. This architecture specific patch-set RFC V3 shall be floated soon and is > > present at below location > > > > [*] https://github.com/salil-mehta/qemu/tree/virt-cpuhp-armv8/rfc-v3-rc1 > > > > > Igor plan to take a look? Yep, I plan to review it > > > Revision History: > > > > Patch-set V11 -> V12 > > 1. Addressed Harsh Prateek Bora's (IBM) comment > > - Changed @cpu to @vcpu_id in the kvm_unpark_vcpu protoype header/ > > 2. Added Zhao Liu's (Intel) Tested-by for whole series > > - Qtest does not breaks on Intel platforms now. > > 3. Added Zhao Liu's (Intel) Reviewed-by for [PATCH V11 {1/8 - 3/8}] > > Link: https://lore.kernel.org/qemu-devel/ZlRSPuJGBgyEUW6w@intel.com/ > > Link: https://lore.kernel.org/qemu-devel/a5f3d78e-cfed-441f-9c56-e3e78fa5edee@linux.ibm.com/ > > > > Patch-set V10 -> V11 > > 1. Addressed Nicholas Piggin's (IBM) comment > > - moved the traces in kvm_unpark_vcpu and kvm_create_vcpu at the end > > - Added the Reviewed-by Tag for [PATCH V10 1/8] > > 2. Addressed Alex Bennée's (Linaro) comments > > - Added a note explaining dependency of the [PATCH V10 7/8] on Arch specific patch-set > > Link: https://lore.kernel.org/qemu-devel/D1FS5GOOFWWK.2PNRIVL0V6DBL@gmail.com/ > > Link: https://lore.kernel.org/qemu-devel/87frubi402.fsf@draig.linaro.org/ > > > > Patch-set V9 -> V10 > > 1. Addressed Nicholas Piggin's (IBM) & Philippe Mathieu-Daudé (Linaro) comments > > - carved out kvm_unpark_vcpu and added its trace > > - Widened the scope of the kvm_unpark_vcpu so that it can be used by generic framework > > being thought out > > Link: https://lore.kernel.org/qemu-devel/20240519210620.228342-1-salil.mehta@huawei.com/ > > Link: https://lore.kernel.org/qemu-devel/e94b0e14-efee-4050-9c9f-08382a36b63a@linaro.org/ > > > > Patch-set V8 -> V9 > > 1. Addressed Vishnu Pajjuri's (Ampere) comments > > - Added kvm_fd to trace in kvm_create_vcpu > > - Some clean ups: arch vcpu-id and sbd variable > > - Added the missed initialization of cpu->gdb_num_regs > > 2. Addressed the commnet from Zhao Liu (Intel) > > - Make initialization of CPU Hotplug state conditional (possible_cpu_arch_ids!=NULL) > > Link: https://lore.kernel.org/qemu-devel/20240312020000.12992-1-salil.mehta@huawei.com/ > > > > Patch-set V7 -> V8 > > 1. Rebased and Fixed the conflicts > > > > Patch-set V6 -> V7 > > 1. Addressed Alex Bennée's comments > > - Updated the docs > > 2. Addressed Igor Mammedov's comments > > - Merged patches [Patch V6 3/9] & [Patch V6 7/9] with [Patch V6 4/9] > > - Updated commit-log of [Patch V6 1/9] and [Patch V6 5/9] > > 3. Added Shaoqin Huang's Reviewed-by tags for whole series. > > Link: https://lore.kernel.org/qemu-devel/20231013105129.25648-1-salil.mehta@huawei.com/ > > > > Patch-set V5 -> V6 > > 1. Addressed Gavin Shan's comments > > - Fixed the assert() ranges of address spaces > > - Rebased the patch-set to latest changes in the qemu.git > > - Added Reviewed-by tags for patches {8,9} > > 2. Addressed Jonathan Cameron's comments > > - Updated commit-log for [Patch V5 1/9] with mention of trace events > > - Added Reviewed-by tags for patches {1,5} > > 3. Added Tested-by tags from Xianglai Li > > 4. Fixed checkpatch.pl error "Qemu -> QEMU" in [Patch V5 1/9] > > Link: https://lore.kernel.org/qemu-devel/20231011194355.15628-1-salil.mehta@huawei.com/ > > > > Patch-set V4 -> V5 > > 1. Addressed Gavin Shan's comments > > - Fixed the trace events print string for kvm_{create,get,park,destroy}_vcpu > > - Added Reviewed-by tag for patch {1} > > 2. Added Shaoqin Huang's Reviewed-by tags for Patches {2,3} > > 3. Added Tested-by Tag from Vishnu Pajjuri to the patch-set > > 4. Dropped the ARM specific [Patch V4 10/10] > > Link: https://lore.kernel.org/qemu-devel/20231009203601.17584-1-salil.mehta@huawei.com/ > > > > Patch-set V3 -> V4 > > 1. Addressed David Hilderbrand's comments > > - Fixed the wrong doc comment of kvm_park_vcpu API prototype > > - Added Reviewed-by tags for patches {2,4} > > Link: https://lore.kernel.org/qemu-devel/20231009112812.10612-1-salil.mehta@huawei.com/ > > > > Patch-set V2 -> V3 > > 1. Addressed Jonathan Cameron's comments > > - Fixed 'vcpu-id' type wrongly changed from 'unsigned long' to 'integer' > > - Removed unnecessary use of variable 'vcpu_id' in kvm_park_vcpu > > - Updated [Patch V2 3/10] commit-log with details of ACPI_CPU_SCAN_METHOD macro > > - Updated [Patch V2 5/10] commit-log with details of conditional event handler method > > - Added Reviewed-by tags for patches {2,3,4,6,7} > > 2. Addressed Gavin Shan's comments > > - Remove unnecessary use of variable 'vcpu_id' in kvm_par_vcpu > > - Fixed return value in kvm_get_vcpu from -1 to -ENOENT > > - Reset the value of 'gdb_num_g_regs' in gdb_unregister_coprocessor_all > > - Fixed the kvm_{create,park}_vcpu prototypes docs > > - Added Reviewed-by tags for patches {2,3,4,5,6,7,9,10} > > 3. Addressed one earlier missed comment by Alex Bennée in RFC V1 > > - Added traces instead of DPRINTF in the newly added and some existing functions > > Link: https://lore.kernel.org/qemu-devel/20230930001933.2660-1-salil.mehta@huawei.com/ > > > > Patch-set V1 -> V2 > > 1. Addressed Alex Bennée's comments > > - Refactored the kvm_create_vcpu logic to get rid of goto > > - Added the docs for kvm_{create,park}_vcpu prototypes > > - Splitted the gdbstub and AddressSpace destruction change into separate patches > > - Added Reviewed-by tags for patches {2,10} > > Link: https://lore.kernel.org/qemu-devel/20230929124304.13672-1-salil.mehta@huawei.com/ > > > > References: > > > > [1] https://lore.kernel.org/qemu-devel/20230926100436.28284-1-salil.mehta@huawei.com/ > > [2] https://lore.kernel.org/all/20230913163823.7880-1-james.morse@arm.com/ > > [3] https://lore.kernel.org/qemu-devel/cover.1695697701.git.lixianglai@loongson.cn/ > > > > > > > > Salil Mehta (8): > > accel/kvm: Extract common KVM vCPU {creation,parking} code > > hw/acpi: Move CPU ctrl-dev MMIO region len macro to common header file > > hw/acpi: Update ACPI GED framework to support vCPU Hotplug > > hw/acpi: Update GED _EVT method AML with CPU scan > > hw/acpi: Update CPUs AML with cpu-(ctrl)dev change > > physmem: Add helper function to destroy CPU AddressSpace > > gdbstub: Add helper function to unregister GDB register space > > docs/specs/acpi_hw_reduced_hotplug: Add the CPU Hotplug Event Bit > > > > accel/kvm/kvm-all.c | 95 +++++++++++++++++--------- > > accel/kvm/kvm-cpus.h | 23 +++++++ > > accel/kvm/trace-events | 5 +- > > docs/specs/acpi_hw_reduced_hotplug.rst | 3 +- > > gdbstub/gdbstub.c | 13 ++++ > > hw/acpi/acpi-cpu-hotplug-stub.c | 6 ++ > > hw/acpi/cpu.c | 33 ++++++--- > > hw/acpi/generic_event_device.c | 21 ++++++ > > hw/core/cpu-common.c | 1 - > > hw/i386/acpi-build.c | 3 +- > > include/exec/cpu-common.h | 8 +++ > > include/exec/gdbstub.h | 6 ++ > > include/hw/acpi/cpu.h | 5 +- > > include/hw/acpi/cpu_hotplug.h | 4 ++ > > include/hw/acpi/generic_event_device.h | 4 ++ > > include/hw/core/cpu.h | 1 + > > system/physmem.c | 29 ++++++++ > > 17 files changed, 212 insertions(+), 48 deletions(-) > > > > -- > > 2.34.1 >
Hi Igor, On Wed, Jun 5, 2024 at 3:03 PM Igor Mammedov <imammedo@redhat.com> wrote: > On Sun, 2 Jun 2024 18:03:05 -0400 > "Michael S. Tsirkin" <mst@redhat.com> wrote: > > > On Thu, May 30, 2024 at 12:42:33AM +0100, Salil Mehta wrote: > > > Virtual CPU hotplug support is being added across various > architectures[1][3]. > > > This series adds various code bits common across all architectures: > > > > > > 1. vCPU creation and Parking code refactor [Patch 1] > > > 2. Update ACPI GED framework to support vCPU Hotplug [Patch 2,3] > > > 3. ACPI CPUs AML code change [Patch 4,5] > > > 4. Helper functions to support unrealization of CPU objects [Patch 6,7] > > > 5. Docs [Patch 8] > > > > > > > > > Repository: > > > > > > [*] https://github.com/salil-mehta/qemu.git > virt-cpuhp-armv8/rfc-v3.arch.agnostic.v12 > > > > > > NOTE: This series is meant to work in conjunction with Architecture > specific patch-set. > > > For ARM, this will work in combination of the architecture specific > part based on > > > RFC V2 [1]. This architecture specific patch-set RFC V3 shall be > floated soon and is > > > present at below location > > > > > > [*] > https://github.com/salil-mehta/qemu/tree/virt-cpuhp-armv8/rfc-v3-rc1 > > > > > > > > > Igor plan to take a look? > > Yep, I plan to review it > A gentle reminder on this. Thanks Salil. > > > > > > Revision History: > > > > > > Patch-set V11 -> V12 > > > 1. Addressed Harsh Prateek Bora's (IBM) comment > > > - Changed @cpu to @vcpu_id in the kvm_unpark_vcpu protoype header/ > > > 2. Added Zhao Liu's (Intel) Tested-by for whole series > > > - Qtest does not breaks on Intel platforms now. > > > 3. Added Zhao Liu's (Intel) Reviewed-by for [PATCH V11 {1/8 - 3/8}] > > > Link: https://lore.kernel.org/qemu-devel/ZlRSPuJGBgyEUW6w@intel.com/ > > > Link: > https://lore.kernel.org/qemu-devel/a5f3d78e-cfed-441f-9c56-e3e78fa5edee@linux.ibm.com/ > > > > > > Patch-set V10 -> V11 > > > 1. Addressed Nicholas Piggin's (IBM) comment > > > - moved the traces in kvm_unpark_vcpu and kvm_create_vcpu at the end > > > - Added the Reviewed-by Tag for [PATCH V10 1/8] > > > 2. Addressed Alex Bennée's (Linaro) comments > > > - Added a note explaining dependency of the [PATCH V10 7/8] on Arch > specific patch-set > > > Link: > https://lore.kernel.org/qemu-devel/D1FS5GOOFWWK.2PNRIVL0V6DBL@gmail.com/ > > > Link: > https://lore.kernel.org/qemu-devel/87frubi402.fsf@draig.linaro.org/ > > > > > > Patch-set V9 -> V10 > > > 1. Addressed Nicholas Piggin's (IBM) & Philippe Mathieu-Daudé (Linaro) > comments > > > - carved out kvm_unpark_vcpu and added its trace > > > - Widened the scope of the kvm_unpark_vcpu so that it can be used > by generic framework > > > being thought out > > > Link: > https://lore.kernel.org/qemu-devel/20240519210620.228342-1-salil.mehta@huawei.com/ > > > Link: > https://lore.kernel.org/qemu-devel/e94b0e14-efee-4050-9c9f-08382a36b63a@linaro.org/ > > > > > > Patch-set V8 -> V9 > > > 1. Addressed Vishnu Pajjuri's (Ampere) comments > > > - Added kvm_fd to trace in kvm_create_vcpu > > > - Some clean ups: arch vcpu-id and sbd variable > > > - Added the missed initialization of cpu->gdb_num_regs > > > 2. Addressed the commnet from Zhao Liu (Intel) > > > - Make initialization of CPU Hotplug state conditional > (possible_cpu_arch_ids!=NULL) > > > Link: > https://lore.kernel.org/qemu-devel/20240312020000.12992-1-salil.mehta@huawei.com/ > > > > > > Patch-set V7 -> V8 > > > 1. Rebased and Fixed the conflicts > > > > > > Patch-set V6 -> V7 > > > 1. Addressed Alex Bennée's comments > > > - Updated the docs > > > 2. Addressed Igor Mammedov's comments > > > - Merged patches [Patch V6 3/9] & [Patch V6 7/9] with [Patch V6 4/9] > > > - Updated commit-log of [Patch V6 1/9] and [Patch V6 5/9] > > > 3. Added Shaoqin Huang's Reviewed-by tags for whole series. > > > Link: > https://lore.kernel.org/qemu-devel/20231013105129.25648-1-salil.mehta@huawei.com/ > > > > > > Patch-set V5 -> V6 > > > 1. Addressed Gavin Shan's comments > > > - Fixed the assert() ranges of address spaces > > > - Rebased the patch-set to latest changes in the qemu.git > > > - Added Reviewed-by tags for patches {8,9} > > > 2. Addressed Jonathan Cameron's comments > > > - Updated commit-log for [Patch V5 1/9] with mention of trace events > > > - Added Reviewed-by tags for patches {1,5} > > > 3. Added Tested-by tags from Xianglai Li > > > 4. Fixed checkpatch.pl error "Qemu -> QEMU" in [Patch V5 1/9] > > > Link: > https://lore.kernel.org/qemu-devel/20231011194355.15628-1-salil.mehta@huawei.com/ > > > > > > Patch-set V4 -> V5 > > > 1. Addressed Gavin Shan's comments > > > - Fixed the trace events print string for > kvm_{create,get,park,destroy}_vcpu > > > - Added Reviewed-by tag for patch {1} > > > 2. Added Shaoqin Huang's Reviewed-by tags for Patches {2,3} > > > 3. Added Tested-by Tag from Vishnu Pajjuri to the patch-set > > > 4. Dropped the ARM specific [Patch V4 10/10] > > > Link: > https://lore.kernel.org/qemu-devel/20231009203601.17584-1-salil.mehta@huawei.com/ > > > > > > Patch-set V3 -> V4 > > > 1. Addressed David Hilderbrand's comments > > > - Fixed the wrong doc comment of kvm_park_vcpu API prototype > > > - Added Reviewed-by tags for patches {2,4} > > > Link: > https://lore.kernel.org/qemu-devel/20231009112812.10612-1-salil.mehta@huawei.com/ > > > > > > Patch-set V2 -> V3 > > > 1. Addressed Jonathan Cameron's comments > > > - Fixed 'vcpu-id' type wrongly changed from 'unsigned long' to > 'integer' > > > - Removed unnecessary use of variable 'vcpu_id' in kvm_park_vcpu > > > - Updated [Patch V2 3/10] commit-log with details of > ACPI_CPU_SCAN_METHOD macro > > > - Updated [Patch V2 5/10] commit-log with details of conditional > event handler method > > > - Added Reviewed-by tags for patches {2,3,4,6,7} > > > 2. Addressed Gavin Shan's comments > > > - Remove unnecessary use of variable 'vcpu_id' in kvm_par_vcpu > > > - Fixed return value in kvm_get_vcpu from -1 to -ENOENT > > > - Reset the value of 'gdb_num_g_regs' in > gdb_unregister_coprocessor_all > > > - Fixed the kvm_{create,park}_vcpu prototypes docs > > > - Added Reviewed-by tags for patches {2,3,4,5,6,7,9,10} > > > 3. Addressed one earlier missed comment by Alex Bennée in RFC V1 > > > - Added traces instead of DPRINTF in the newly added and some > existing functions > > > Link: > https://lore.kernel.org/qemu-devel/20230930001933.2660-1-salil.mehta@huawei.com/ > > > > > > Patch-set V1 -> V2 > > > 1. Addressed Alex Bennée's comments > > > - Refactored the kvm_create_vcpu logic to get rid of goto > > > - Added the docs for kvm_{create,park}_vcpu prototypes > > > - Splitted the gdbstub and AddressSpace destruction change into > separate patches > > > - Added Reviewed-by tags for patches {2,10} > > > Link: > https://lore.kernel.org/qemu-devel/20230929124304.13672-1-salil.mehta@huawei.com/ > > > > > > References: > > > > > > [1] > https://lore.kernel.org/qemu-devel/20230926100436.28284-1-salil.mehta@huawei.com/ > > > [2] > https://lore.kernel.org/all/20230913163823.7880-1-james.morse@arm.com/ > > > [3] > https://lore.kernel.org/qemu-devel/cover.1695697701.git.lixianglai@loongson.cn/ > > > > > > > > > > > > Salil Mehta (8): > > > accel/kvm: Extract common KVM vCPU {creation,parking} code > > > hw/acpi: Move CPU ctrl-dev MMIO region len macro to common header > file > > > hw/acpi: Update ACPI GED framework to support vCPU Hotplug > > > hw/acpi: Update GED _EVT method AML with CPU scan > > > hw/acpi: Update CPUs AML with cpu-(ctrl)dev change > > > physmem: Add helper function to destroy CPU AddressSpace > > > gdbstub: Add helper function to unregister GDB register space > > > docs/specs/acpi_hw_reduced_hotplug: Add the CPU Hotplug Event Bit > > > > > > accel/kvm/kvm-all.c | 95 +++++++++++++++++--------- > > > accel/kvm/kvm-cpus.h | 23 +++++++ > > > accel/kvm/trace-events | 5 +- > > > docs/specs/acpi_hw_reduced_hotplug.rst | 3 +- > > > gdbstub/gdbstub.c | 13 ++++ > > > hw/acpi/acpi-cpu-hotplug-stub.c | 6 ++ > > > hw/acpi/cpu.c | 33 ++++++--- > > > hw/acpi/generic_event_device.c | 21 ++++++ > > > hw/core/cpu-common.c | 1 - > > > hw/i386/acpi-build.c | 3 +- > > > include/exec/cpu-common.h | 8 +++ > > > include/exec/gdbstub.h | 6 ++ > > > include/hw/acpi/cpu.h | 5 +- > > > include/hw/acpi/cpu_hotplug.h | 4 ++ > > > include/hw/acpi/generic_event_device.h | 4 ++ > > > include/hw/core/cpu.h | 1 + > > > system/physmem.c | 29 ++++++++ > > > 17 files changed, 212 insertions(+), 48 deletions(-) > > > > > > -- > > > 2.34.1 > > > >
Hi Salil and Igor, On 6/26/24 9:51 AM, Salil Mehta wrote: > On Wed, Jun 5, 2024 at 3:03 PM Igor Mammedov <imammedo@redhat.com <mailto:imammedo@redhat.com>> wrote: > On Sun, 2 Jun 2024 18:03:05 -0400 > "Michael S. Tsirkin" <mst@redhat.com <mailto:mst@redhat.com>> wrote: > > > On Thu, May 30, 2024 at 12:42:33AM +0100, Salil Mehta wrote: > > > Virtual CPU hotplug support is being added across various architectures[1][3]. > > > This series adds various code bits common across all architectures: > > > > > > 1. vCPU creation and Parking code refactor [Patch 1] > > > 2. Update ACPI GED framework to support vCPU Hotplug [Patch 2,3] > > > 3. ACPI CPUs AML code change [Patch 4,5] > > > 4. Helper functions to support unrealization of CPU objects [Patch 6,7] > > > 5. Docs [Patch 8] > > > > > > > > > Repository: > > > > > > [*] https://github.com/salil-mehta/qemu.git <https://github.com/salil-mehta/qemu.git> virt-cpuhp-armv8/rfc-v3.arch.agnostic.v12 > > > > > > NOTE: This series is meant to work in conjunction with Architecture specific patch-set. > > > For ARM, this will work in combination of the architecture specific part based on > > > RFC V2 [1]. This architecture specific patch-set RFC V3 shall be floated soon and is > > > present at below location > > > > > > [*] https://github.com/salil-mehta/qemu/tree/virt-cpuhp-armv8/rfc-v3-rc1 <https://github.com/salil-mehta/qemu/tree/virt-cpuhp-armv8/rfc-v3-rc1> > > > > > > > > > Igor plan to take a look? > > Yep, I plan to review it > > > A gentle reminder on this. > Since the latest revision for this series is v13, so I guess Igor needs to do the final screening on v13 instead? v13: https://lists.nongnu.org/archive/html/qemu-arm/2024-06/msg00129.html Thanks, Gavin
Hi Gavin, > From: Gavin Shan <gshan@redhat.com> > Sent: Wednesday, June 26, 2024 5:13 AM > To: Salil Mehta <salil.mehta@opnsrc.net>; Igor Mammedov > <imammedo@redhat.com> > > Hi Salil and Igor, > > On 6/26/24 9:51 AM, Salil Mehta wrote: > > On Wed, Jun 5, 2024 at 3:03 PM Igor Mammedov > <imammedo@redhat.com <mailto:imammedo@redhat.com>> wrote: > > On Sun, 2 Jun 2024 18:03:05 -0400 > > "Michael S. Tsirkin" <mst@redhat.com <mailto:mst@redhat.com>> > wrote: > > > > > On Thu, May 30, 2024 at 12:42:33AM +0100, Salil Mehta wrote: > > > > Virtual CPU hotplug support is being added across various architectures[1][3]. > > > > This series adds various code bits common across all architectures: > > > > > > > > 1. vCPU creation and Parking code refactor [Patch 1] > > > > 2. Update ACPI GED framework to support vCPU Hotplug [Patch 2,3] > > > > 3. ACPI CPUs AML code change [Patch 4,5] > > > > 4. Helper functions to support unrealization of CPU objects [Patch 6,7] > > > > 5. Docs [Patch 8] > > > > > > > > > > > > Repository: > > > > > > > > [*] https://github.com/salil-mehta/qemu.git <https://github.com/salil-mehta/qemu.git> virt-cpuhp-armv8/rfc- v3.arch.agnostic.v12 > > > > > > > > NOTE: This series is meant to work in conjunction with Architecture specific patch-set. > > > > For ARM, this will work in combination of the architecture specific part based on > > > > RFC V2 [1]. This architecture specific patch-set RFC V3 shall be floated soon and is > > > > present at below location > > > > > > > > [*] https://github.com/salil-mehta/qemu/tree/virt-cpuhp-armv8/rfc-v3-rc1 <https://github.com/salil-mehta/qemu/tree/virt-cpuhp-armv8/rfc-v3-rc1> > > > > > > > > > > > > > Igor plan to take a look? > > > > Yep, I plan to review it > > > > > > A gentle reminder on this. > > > > Since the latest revision for this series is v13, so I guess Igor needs to do the > final screening on v13 instead? > > v13: https://lists.nongnu.org/archive/html/qemu-arm/2024-06/msg00129.html Yes, thanks for pointing this.
On Wed, 26 Jun 2024 17:53:52 +0000 Salil Mehta <salil.mehta@huawei.com> wrote: > Hi Gavin, > > > From: Gavin Shan <gshan@redhat.com> > > Sent: Wednesday, June 26, 2024 5:13 AM > > To: Salil Mehta <salil.mehta@opnsrc.net>; Igor Mammedov > > <imammedo@redhat.com> > > > > Hi Salil and Igor, > > > > On 6/26/24 9:51 AM, Salil Mehta wrote: > > > On Wed, Jun 5, 2024 at 3:03 PM Igor Mammedov > > <imammedo@redhat.com <mailto:imammedo@redhat.com>> wrote: > > > On Sun, 2 Jun 2024 18:03:05 -0400 > > > "Michael S. Tsirkin" <mst@redhat.com <mailto:mst@redhat.com>> > > wrote: > > > > > > > On Thu, May 30, 2024 at 12:42:33AM +0100, Salil Mehta wrote: > > > > > Virtual CPU hotplug support is being added across various architectures[1][3]. > > > > > This series adds various code bits common across all architectures: > > > > > > > > > > 1. vCPU creation and Parking code refactor [Patch 1] > > > > > 2. Update ACPI GED framework to support vCPU Hotplug [Patch 2,3] > > > > > 3. ACPI CPUs AML code change [Patch 4,5] > > > > > 4. Helper functions to support unrealization of CPU objects [Patch 6,7] > > > > > 5. Docs [Patch 8] > > > > > > > > > > > > > > > Repository: > > > > > > > > > > [*] https://github.com/salil-mehta/qemu.git <https://github.com/salil-mehta/qemu.git> virt-cpuhp-armv8/rfc- v3.arch.agnostic.v12 > > > > > > > > > > NOTE: This series is meant to work in conjunction with Architecture specific patch-set. > > > > > For ARM, this will work in combination of the architecture specific part based on > > > > > RFC V2 [1]. This architecture specific patch-set RFC V3 shall be floated soon and is > > > > > present at below location > > > > > > > > > > [*] https://github.com/salil-mehta/qemu/tree/virt-cpuhp-armv8/rfc-v3-rc1 <https://github.com/salil-mehta/qemu/tree/virt-cpuhp-armv8/rfc-v3-rc1> > > > > > > > > > > > > > > > > > Igor plan to take a look? > > > > > > Yep, I plan to review it > > > > > > > > > A gentle reminder on this. > > > > > > > Since the latest revision for this series is v13, so I guess Igor needs to do the > > final screening on v13 instead? > > > > v13: https://lists.nongnu.org/archive/html/qemu-arm/2024-06/msg00129.html > > > Yes, thanks for pointing this.
Hi Igor, > From: Igor Mammedov <imammedo@redhat.com> > Sent: Monday, July 1, 2024 9:49 AM > To: Salil Mehta <salil.mehta@huawei.com> > > On Wed, 26 Jun 2024 17:53:52 +0000 > Salil Mehta <salil.mehta@huawei.com> wrote: > > > Hi Gavin, > > > > > From: Gavin Shan <gshan@redhat.com> > > > Sent: Wednesday, June 26, 2024 5:13 AM > > > To: Salil Mehta <salil.mehta@opnsrc.net>; Igor Mammedov > > > <imammedo@redhat.com> > > > > > > Hi Salil and Igor, > > > > > > On 6/26/24 9:51 AM, Salil Mehta wrote: > > > > On Wed, Jun 5, 2024 at 3:03 PM Igor Mammedov > > > <imammedo@redhat.com <mailto:imammedo@redhat.com>> wrote: > > > > On Sun, 2 Jun 2024 18:03:05 -0400 > > > > "Michael S. Tsirkin" <mst@redhat.com <mailto:mst@redhat.com>> wrote: > > > > > > > > > On Thu, May 30, 2024 at 12:42:33AM +0100, Salil Mehta wrote: > > > > > > Virtual CPU hotplug support is being added across various architectures[1][3]. > > > > > > This series adds various code bits common across all architectures: > > > > > > > > > > > > 1. vCPU creation and Parking code refactor [Patch 1] > > > > > > 2. Update ACPI GED framework to support vCPU Hotplug [Patch 2,3] > > > > > > 3. ACPI CPUs AML code change [Patch 4,5] > > > > > > 4. Helper functions to support unrealization of CPU objects [Patch 6,7] > > > > > > 5. Docs [Patch 8] > > > > > > > > > > > > > > > > > > Repository: > > > > > > > > > > > > [*] https://github.com/salil-mehta/qemu.git <https://github.com/salil-mehta/qemu.git> virt-cpuhp-armv8/rfc-v3.arch.agnostic.v12 > > > > > > > > > > > > NOTE: This series is meant to work in conjunction with Architecture specific patch-set. > > > > > > For ARM, this will work in combination of the architecture specific part based on > > > > > > RFC V2 [1]. This architecture specific patch-set RFC V3 shall be floated soon and is > > > > > > present at below location > > > > > > > > > > > > [*] https://github.com/salil-mehta/qemu/tree/virt-cpuhp-armv8/rfc-v3-rc1 <https://github.com/salil-mehta/qemu/tree/virt-cpuhp- > armv8/rfc-v3-rc1> > > > > > > > > > > > > > > > > > > > > > Igor plan to take a look? > > > > > > > > Yep, I plan to review it > > > > > > > > > > > > A gentle reminder on this. > > > > > > > > > > Since the latest revision for this series is v13, so I guess Igor > > > needs to do the final screening on v13 instead? > > > > > > v13: > > > https://lists.nongnu.org/archive/html/qemu-arm/2024-06/msg00129.html > > > > > > Yes, thanks for pointing this.
Virtual CPU hotplug support is being added across various architectures[1][3]. This series adds various code bits common across all architectures: 1. vCPU creation and Parking code refactor [Patch 1] 2. Update ACPI GED framework to support vCPU Hotplug [Patch 2,3] 3. ACPI CPUs AML code change [Patch 4,5] 4. Helper functions to support unrealization of CPU objects [Patch 6,7] 5. Docs [Patch 8] Repository: [*] https://github.com/salil-mehta/qemu.git virt-cpuhp-armv8/rfc-v3.arch.agnostic.v12 NOTE: This series is meant to work in conjunction with Architecture specific patch-set. For ARM, this will work in combination of the architecture specific part based on RFC V2 [1]. This architecture specific patch-set RFC V3 shall be floated soon and is present at below location [*] https://github.com/salil-mehta/qemu/tree/virt-cpuhp-armv8/rfc-v3-rc1 Revision History: Patch-set V11 -> V12 1. Addressed Harsh Prateek Bora's (IBM) comment - Changed @cpu to @vcpu_id in the kvm_unpark_vcpu protoype header/ 2. Added Zhao Liu's (Intel) Tested-by for whole series - Qtest does not breaks on Intel platforms now. 3. Added Zhao Liu's (Intel) Reviewed-by for [PATCH V11 {1/8 - 3/8}] Link: https://lore.kernel.org/qemu-devel/ZlRSPuJGBgyEUW6w@intel.com/ Link: https://lore.kernel.org/qemu-devel/a5f3d78e-cfed-441f-9c56-e3e78fa5edee@linux.ibm.com/ Patch-set V10 -> V11 1. Addressed Nicholas Piggin's (IBM) comment - moved the traces in kvm_unpark_vcpu and kvm_create_vcpu at the end - Added the Reviewed-by Tag for [PATCH V10 1/8] 2. Addressed Alex Bennée's (Linaro) comments - Added a note explaining dependency of the [PATCH V10 7/8] on Arch specific patch-set Link: https://lore.kernel.org/qemu-devel/D1FS5GOOFWWK.2PNRIVL0V6DBL@gmail.com/ Link: https://lore.kernel.org/qemu-devel/87frubi402.fsf@draig.linaro.org/ Patch-set V9 -> V10 1. Addressed Nicholas Piggin's (IBM) & Philippe Mathieu-Daudé (Linaro) comments - carved out kvm_unpark_vcpu and added its trace - Widened the scope of the kvm_unpark_vcpu so that it can be used by generic framework being thought out Link: https://lore.kernel.org/qemu-devel/20240519210620.228342-1-salil.mehta@huawei.com/ Link: https://lore.kernel.org/qemu-devel/e94b0e14-efee-4050-9c9f-08382a36b63a@linaro.org/ Patch-set V8 -> V9 1. Addressed Vishnu Pajjuri's (Ampere) comments - Added kvm_fd to trace in kvm_create_vcpu - Some clean ups: arch vcpu-id and sbd variable - Added the missed initialization of cpu->gdb_num_regs 2. Addressed the commnet from Zhao Liu (Intel) - Make initialization of CPU Hotplug state conditional (possible_cpu_arch_ids!=NULL) Link: https://lore.kernel.org/qemu-devel/20240312020000.12992-1-salil.mehta@huawei.com/ Patch-set V7 -> V8 1. Rebased and Fixed the conflicts Patch-set V6 -> V7 1. Addressed Alex Bennée's comments - Updated the docs 2. Addressed Igor Mammedov's comments - Merged patches [Patch V6 3/9] & [Patch V6 7/9] with [Patch V6 4/9] - Updated commit-log of [Patch V6 1/9] and [Patch V6 5/9] 3. Added Shaoqin Huang's Reviewed-by tags for whole series. Link: https://lore.kernel.org/qemu-devel/20231013105129.25648-1-salil.mehta@huawei.com/ Patch-set V5 -> V6 1. Addressed Gavin Shan's comments - Fixed the assert() ranges of address spaces - Rebased the patch-set to latest changes in the qemu.git - Added Reviewed-by tags for patches {8,9} 2. Addressed Jonathan Cameron's comments - Updated commit-log for [Patch V5 1/9] with mention of trace events - Added Reviewed-by tags for patches {1,5} 3. Added Tested-by tags from Xianglai Li 4. Fixed checkpatch.pl error "Qemu -> QEMU" in [Patch V5 1/9] Link: https://lore.kernel.org/qemu-devel/20231011194355.15628-1-salil.mehta@huawei.com/ Patch-set V4 -> V5 1. Addressed Gavin Shan's comments - Fixed the trace events print string for kvm_{create,get,park,destroy}_vcpu - Added Reviewed-by tag for patch {1} 2. Added Shaoqin Huang's Reviewed-by tags for Patches {2,3} 3. Added Tested-by Tag from Vishnu Pajjuri to the patch-set 4. Dropped the ARM specific [Patch V4 10/10] Link: https://lore.kernel.org/qemu-devel/20231009203601.17584-1-salil.mehta@huawei.com/ Patch-set V3 -> V4 1. Addressed David Hilderbrand's comments - Fixed the wrong doc comment of kvm_park_vcpu API prototype - Added Reviewed-by tags for patches {2,4} Link: https://lore.kernel.org/qemu-devel/20231009112812.10612-1-salil.mehta@huawei.com/ Patch-set V2 -> V3 1. Addressed Jonathan Cameron's comments - Fixed 'vcpu-id' type wrongly changed from 'unsigned long' to 'integer' - Removed unnecessary use of variable 'vcpu_id' in kvm_park_vcpu - Updated [Patch V2 3/10] commit-log with details of ACPI_CPU_SCAN_METHOD macro - Updated [Patch V2 5/10] commit-log with details of conditional event handler method - Added Reviewed-by tags for patches {2,3,4,6,7} 2. Addressed Gavin Shan's comments - Remove unnecessary use of variable 'vcpu_id' in kvm_par_vcpu - Fixed return value in kvm_get_vcpu from -1 to -ENOENT - Reset the value of 'gdb_num_g_regs' in gdb_unregister_coprocessor_all - Fixed the kvm_{create,park}_vcpu prototypes docs - Added Reviewed-by tags for patches {2,3,4,5,6,7,9,10} 3. Addressed one earlier missed comment by Alex Bennée in RFC V1 - Added traces instead of DPRINTF in the newly added and some existing functions Link: https://lore.kernel.org/qemu-devel/20230930001933.2660-1-salil.mehta@huawei.com/ Patch-set V1 -> V2 1. Addressed Alex Bennée's comments - Refactored the kvm_create_vcpu logic to get rid of goto - Added the docs for kvm_{create,park}_vcpu prototypes - Splitted the gdbstub and AddressSpace destruction change into separate patches - Added Reviewed-by tags for patches {2,10} Link: https://lore.kernel.org/qemu-devel/20230929124304.13672-1-salil.mehta@huawei.com/ References: [1] https://lore.kernel.org/qemu-devel/20230926100436.28284-1-salil.mehta@huawei.com/ [2] https://lore.kernel.org/all/20230913163823.7880-1-james.morse@arm.com/ [3] https://lore.kernel.org/qemu-devel/cover.1695697701.git.lixianglai@loongson.cn/ Salil Mehta (8): accel/kvm: Extract common KVM vCPU {creation,parking} code hw/acpi: Move CPU ctrl-dev MMIO region len macro to common header file hw/acpi: Update ACPI GED framework to support vCPU Hotplug hw/acpi: Update GED _EVT method AML with CPU scan hw/acpi: Update CPUs AML with cpu-(ctrl)dev change physmem: Add helper function to destroy CPU AddressSpace gdbstub: Add helper function to unregister GDB register space docs/specs/acpi_hw_reduced_hotplug: Add the CPU Hotplug Event Bit accel/kvm/kvm-all.c | 95 +++++++++++++++++--------- accel/kvm/kvm-cpus.h | 23 +++++++ accel/kvm/trace-events | 5 +- docs/specs/acpi_hw_reduced_hotplug.rst | 3 +- gdbstub/gdbstub.c | 13 ++++ hw/acpi/acpi-cpu-hotplug-stub.c | 6 ++ hw/acpi/cpu.c | 33 ++++++--- hw/acpi/generic_event_device.c | 21 ++++++ hw/core/cpu-common.c | 1 - hw/i386/acpi-build.c | 3 +- include/exec/cpu-common.h | 8 +++ include/exec/gdbstub.h | 6 ++ include/hw/acpi/cpu.h | 5 +- include/hw/acpi/cpu_hotplug.h | 4 ++ include/hw/acpi/generic_event_device.h | 4 ++ include/hw/core/cpu.h | 1 + system/physmem.c | 29 ++++++++ 17 files changed, 212 insertions(+), 48 deletions(-)