Messages in this thread | | | Subject | Re: [RFC v1 03/26] x86/cpufeatures: Add is_tdx_guest() interface | From | "Kuppuswamy, Sathyanarayanan" <> | Date | Thu, 1 Apr 2021 14:15:52 -0700 |
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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. >
-- Sathyanarayanan Kuppuswamy Linux Kernel Developer
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