On Tue, Aug 13, 2024, Colton Lewis wrote:
> This defined the CPUID calls to determine what extensions and
> properties are available. AMD reference manual names listed below.
>
> * PerfCtrExtCore (six core counters instead of four)
> * PerfCtrExtNB (four counters for northbridge events)
> * PerfCtrExtL2I (four counters for L2 cache events)
> * PerfMonV2 (support for registers to control multiple
> counters with a single register write)
> * LbrAndPmcFreeze (support for freezing last branch recorded stack on
> performance counter overflow)
> * NumPerfCtrCore (number of core counters)
> * NumPerfCtrNB (number of northbridge counters)
>
> Signed-off-by: Colton Lewis <coltonlewis@xxxxxxxxxx>
> ---
> tools/testing/selftests/kvm/include/x86_64/processor.h | 7 +++++++
> 1 file changed, 7 insertions(+)
>
> diff --git a/tools/testing/selftests/kvm/include/x86_64/processor.h b/tools/testing/selftests/kvm/include/x86_64/processor.h
> index a0c1440017bb..9d87b5f8974f 100644
> --- a/tools/testing/selftests/kvm/include/x86_64/processor.h
> +++ b/tools/testing/selftests/kvm/include/x86_64/processor.h
> @@ -183,6 +183,9 @@ struct kvm_x86_cpu_feature {
> #define X86_FEATURE_GBPAGES KVM_X86_CPU_FEATURE(0x80000001, 0, EDX, 26)
> #define X86_FEATURE_RDTSCP KVM_X86_CPU_FEATURE(0x80000001, 0, EDX, 27)
> #define X86_FEATURE_LM KVM_X86_CPU_FEATURE(0x80000001, 0, EDX, 29)
> +#define X86_FEATURE_PERF_CTR_EXT_CORE KVM_X86_CPU_FEATURE(0x80000001, 0, ECX, 23)
> +#define X86_FEATURE_PERF_CTR_EXT_NB KVM_X86_CPU_FEATURE(0x80000001, 0, ECX, 24)
> +#define X86_FEATURE_PERF_CTR_EXT_L2I KVM_X86_CPU_FEATURE(0x80000001, 0, ECX, 28)
You won't be testing Northbridge counters and L2I counters, so these two
could be optional to the patch.
> #define X86_FEATURE_INVTSC KVM_X86_CPU_FEATURE(0x80000007, 0, EDX, 8)
> #define X86_FEATURE_RDPRU KVM_X86_CPU_FEATURE(0x80000008, 0, EBX, 4)
> #define X86_FEATURE_AMD_IBPB KVM_X86_CPU_FEATURE(0x80000008, 0, EBX, 12)
> @@ -195,6 +198,8 @@ struct kvm_x86_cpu_feature {
> #define X86_FEATURE_VGIF KVM_X86_CPU_FEATURE(0x8000000A, 0, EDX, 16)
> #define X86_FEATURE_SEV KVM_X86_CPU_FEATURE(0x8000001F, 0, EAX, 1)
> #define X86_FEATURE_SEV_ES KVM_X86_CPU_FEATURE(0x8000001F, 0, EAX, 3)
> +#define X86_FEATURE_PERF_MON_V2 KVM_X86_CPU_FEATURE(0x80000022, 0, EAX, 0)
Let's use X86_FEATURE_PERFMON_V2 instead.
> +#define X86_FEATURE_PERF_LBR_PMC_FREEZE KVM_X86_CPU_FEATURE(0x80000022, 0, EAX, 2)
You don't use this feature, do you? If not, this can be optional for the
patch.
>
> /*
> * KVM defined paravirt features.
> @@ -281,6 +286,8 @@ struct kvm_x86_cpu_property {
> #define X86_PROPERTY_GUEST_MAX_PHY_ADDR KVM_X86_CPU_PROPERTY(0x80000008, 0, EAX, 16, 23)
> #define X86_PROPERTY_SEV_C_BIT KVM_X86_CPU_PROPERTY(0x8000001F, 0, EBX, 0, 5)
> #define X86_PROPERTY_PHYS_ADDR_REDUCTION KVM_X86_CPU_PROPERTY(0x8000001F, 0, EBX, 6, 11)
> +#define X86_PROPERTY_NUM_PERF_CTR_CORE KVM_X86_CPU_PROPERTY(0x80000022, 0, EBX, 0, 3)
> +#define X86_PROPERTY_NUM_PERF_CTR_NB KVM_X86_CPU_PROPERTY(0x80000022, 0, EBX, 10, 15)
>
ditto.
> #define X86_PROPERTY_MAX_CENTAUR_LEAF KVM_X86_CPU_PROPERTY(0xC0000000, 0, EAX, 0, 31)
>
> --
> 2.46.0.76.ge559c4bf1a-goog
>
