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Re: [PATCH v5 8/8] i386/cpu: Adjust level for RDT on full_cpuid_auto_lev


From: Michael S. Tsirkin
Subject: Re: [PATCH v5 8/8] i386/cpu: Adjust level for RDT on full_cpuid_auto_level
Date: Wed, 8 Jan 2025 13:35:03 -0500

On Fri, Dec 13, 2024 at 05:26:45PM +0000, Hendrik Wuethrich wrote:
> From: ‪Hendrik Wüthrich <whendrik@google.com>
> 
> Make sure that RDT monitoring and allocation features are included in
> in full_cpuid_auto_level.
> 
> Signed-off-by: Hendrik Wüthrich <whendrik@google.com>
> ---
>  target/i386/cpu.c | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/target/i386/cpu.c b/target/i386/cpu.c
> index f7904870ed..4f1493043e 100644
> --- a/target/i386/cpu.c
> +++ b/target/i386/cpu.c
> @@ -880,6 +880,7 @@ void x86_cpu_vendor_words2str(char *dst, uint32_t vendor1,
>  #else
>  #define TCG_7_0_ECX_RDPID 0
>  #endif
> +
>  #define TCG_7_0_ECX_FEATURES (CPUID_7_0_ECX_UMIP | CPUID_7_0_ECX_PKU | \
>            /* CPUID_7_0_ECX_OSPKE is dynamic */ \
>            CPUID_7_0_ECX_LA57 | CPUID_7_0_ECX_PKS | CPUID_7_0_ECX_VAES | \


do not change unrelated code pls.

> @@ -7672,6 +7673,8 @@ void x86_cpu_expand_features(X86CPU *cpu, Error **errp)
>          x86_cpu_adjust_feat_level(cpu, FEAT_C000_0001_EDX);
>          x86_cpu_adjust_feat_level(cpu, FEAT_SVM);
>          x86_cpu_adjust_feat_level(cpu, FEAT_XSAVE);
> +        x86_cpu_adjust_feat_level(cpu, FEAT_RDT_F_0_EDX);
> +        x86_cpu_adjust_feat_level(cpu, FEAT_RDT_10_0_EBX);
>  
>          /* Intel Processor Trace requires CPUID[0x14] */
>          if ((env->features[FEAT_7_0_EBX] & CPUID_7_0_EBX_INTEL_PT)) {
> -- 
> 2.47.1.613.gc27f4b7a9f-goog




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