Re: [PATCH V11 1/8] accel/kvm: Extract common KVM vCPU {creation, parking} code

[Zhao Liu <zhao1.liu@intel.com>]

On Wed, May 22, 2024 at 10:11:04PM +0100, Salil Mehta via wrote:
> Date: Wed, 22 May 2024 22:11:04 +0100
> From: Salil Mehta via <qemu-devel@nongnu.org>
> Subject: [PATCH V11 1/8] accel/kvm: Extract common KVM vCPU {creation,
>  parking} code
> X-Mailer: git-send-email 2.34.1
> 
> KVM vCPU creation is done once during the vCPU realization when Qemu vCPU thread
> is spawned. This is common to all the architectures as of now.
> 
> Hot-unplug of vCPU results in destruction of the vCPU object in QOM but the
> corresponding KVM vCPU object in the Host KVM is not destroyed as KVM doesn't
> support vCPU removal. Therefore, its representative KVM vCPU object/context in
> Qemu is parked.
> 
> Refactor architecture common logic so that some APIs could be reused by vCPU
> Hotplug code of some architectures likes ARM, Loongson etc. Update new/old APIs
> with trace events. No functional change is intended here.
> 
> Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
> Reviewed-by: Gavin Shan <gshan@redhat.com>
> Tested-by: Vishnu Pajjuri <vishnu@os.amperecomputing.com>
> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
> Tested-by: Xianglai Li <lixianglai@loongson.cn>
> Tested-by: Miguel Luis <miguel.luis@oracle.com>
> Reviewed-by: Shaoqin Huang <shahuang@redhat.com>
> Reviewed-by: Vishnu Pajjuri <vishnu@os.amperecomputing.com>
> Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
> ---
>  accel/kvm/kvm-all.c    | 95 ++++++++++++++++++++++++++++--------------
>  accel/kvm/kvm-cpus.h   | 23 ++++++++++
>  accel/kvm/trace-events |  5 ++-
>  3 files changed, 90 insertions(+), 33 deletions(-)
> 

Reviewed-by: Zhao Liu <zhao1.liu@intel.com>