Messages in this thread |  | | Subject | Re: [RFC v1 03/26] x86/cpufeatures: Add is_tdx_guest() interface | From | Dave Hansen <> | Date | Thu, 1 Apr 2021 14:19:03 -0700 |
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On 4/1/21 2:15 PM, Kuppuswamy, Sathyanarayanan wrote: > On 4/1/21 2:08 PM, Dave Hansen wrote: >> On 2/5/21 3:38 PM, Kuppuswamy Sathyanarayanan wrote: >>> +bool is_tdx_guest(void) >>> +{ >>> + return static_cpu_has(X86_FEATURE_TDX_GUEST); >>> +} >> >> Why do you need is_tdx_guest() as opposed to calling >> cpu_feature_enabled(X86_FEATURE_TDX_GUEST) everywhere? > > is_tdx_guest() is also implemented/used in compressed > code (which uses native_cpuid calls). I don't think > we can use cpu_feature_enabled(X86_FEATURE_TDX_GUEST) in > compressed code right? Also is_tdx_guest() looks easy > to read and use.
OK, but how many of the is_tdx_guest() uses are in the compressed code? Why has its use spread beyond that?
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