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
