Re: [PATCH v2 0/3] Use static_call for kvm_x86_ops

Paolo Bonzini
2021-01-27T00:12:17Z

On 15/01/21 04:27, Jason Baron wrote:
> Hi,
>
> Convert kvm_x86_ops to use static_call. Shows good performance
> gains for cpuid loop micro-benchmark (results in patch 3/3).

Queued, thanks.

Paolo

> Thanks,
>
> -Jason
>
>
> Changes from v1:
> -Introduce kvm-x86-ops header with eye towards using this to define
> svm_x86_ops and vmx_x86_ops in follow on patches (Paolo, Sean)
> -add new patch (1/3), that adds a vmx/svm prefix to help facilitate
> svm_x86_ops and vmx_x86_ops future conversions.
> -added amd perf numbres to description of patch 3/3
>
> Jason Baron (3):
> KVM: X86: append vmx/svm prefix to additional kvm_x86_ops functions
> KVM: x86: introduce definitions to support static calls for kvm_x86_ops
> KVM: x86: use static calls to reduce kvm_x86_ops overhead
>
> arch/x86/include/asm/kvm-x86-ops.h | 127 +++++++++++++++
> arch/x86/include/asm/kvm_host.h | 21 ++-
> arch/x86/kvm/cpuid.c | 2 +-
> arch/x86/kvm/hyperv.c | 4 +-
> arch/x86/kvm/irq.c | 3 +-
> arch/x86/kvm/kvm_cache_regs.h | 10 +-
> arch/x86/kvm/lapic.c | 30 ++--
> arch/x86/kvm/mmu.h | 6 +-
> arch/x86/kvm/mmu/mmu.c | 15 +-
> arch/x86/kvm/mmu/spte.c | 2 +-
> arch/x86/kvm/pmu.c | 2 +-
> arch/x86/kvm/svm/svm.c | 20 +--
> arch/x86/kvm/trace.h | 4 +-
> arch/x86/kvm/vmx/nested.c | 2 +-
> arch/x86/kvm/vmx/vmx.c | 30 ++--
> arch/x86/kvm/vmx/vmx.h | 2 +-
> arch/x86/kvm/x86.c | 307 +++++++++++++++++++------------------
> arch/x86/kvm/x86.h | 6 +-
> 18 files changed, 369 insertions(+), 224 deletions(-)
> create mode 100644 arch/x86/include/asm/kvm-x86-ops.h
>