On Sun, 2 Jun 2024 18:03:05 -0400 "Michael S. Tsirkin" <m...@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/zlrspujgbgyeu...@intel.com/ > > Link: > > https://lore.kernel.org/qemu-devel/a5f3d78e-cfed-441f-9c56-e3e78fa5e...@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.2pnrivl0v6...@gmail.com/ > > Link: https://lore.kernel.org/qemu-devel/87frubi402....@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.me...@huawei.com/ > > Link: > > https://lore.kernel.org/qemu-devel/e94b0e14-efee-4050-9c9f-08382a36b...@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.me...@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.me...@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.me...@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.me...@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.me...@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.me...@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.me...@huawei.com/ > > > > References: > > > > [1] > > https://lore.kernel.org/qemu-devel/20230926100436.28284-1-salil.me...@huawei.com/ > > [2] https://lore.kernel.org/all/20230913163823.7880-1-james.mo...@arm.com/ > > [3] > > https://lore.kernel.org/qemu-devel/cover.1695697701.git.lixiang...@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 >
