On Thu, Aug 01, 2024, Mingwei Zhang wrote:
> diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
> index 0c40f551130e..6db4dc496d2b 100644
> --- a/arch/x86/kvm/x86.c
> +++ b/arch/x86/kvm/x86.c
> @@ -239,6 +239,9 @@ EXPORT_SYMBOL_GPL(host_xss);
> u64 __read_mostly host_arch_capabilities;
> EXPORT_SYMBOL_GPL(host_arch_capabilities);
>
> +u64 __read_mostly host_perf_cap;
> +EXPORT_SYMBOL_GPL(host_perf_cap);
In case you don't get a conflict on rebase, this should go in "struct kvm_host_values"
as "perf_capabilities".
> const struct _kvm_stats_desc kvm_vm_stats_desc[] = {
> KVM_GENERIC_VM_STATS(),
> STATS_DESC_COUNTER(VM, mmu_shadow_zapped),
> @@ -9793,6 +9796,9 @@ int kvm_x86_vendor_init(struct kvm_x86_init_ops *ops)
> if (boot_cpu_has(X86_FEATURE_ARCH_CAPABILITIES))
> rdmsrl(MSR_IA32_ARCH_CAPABILITIES, host_arch_capabilities);
>
> + if (boot_cpu_has(X86_FEATURE_PDCM))
> + rdmsrl(MSR_IA32_PERF_CAPABILITIES, host_perf_cap);
> +
> r = ops->hardware_setup();
> if (r != 0)
> goto out_mmu_exit;
> --
> 2.46.0.rc1.232.g9752f9e123-goog
>
