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    SubjectRe: [RFC v1 03/26] x86/cpufeatures: Add is_tdx_guest() interface
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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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