x86/bugs: Fix BHI retpoline check
Confusingly, X86_FEATURE_RETPOLINE doesn't mean retpolines are enabled, as it also includes the original "AMD retpoline" which isn't a retpoline at all. Also replace cpu_feature_enabled() with boot_cpu_has() because this is before alternatives are patched and cpu_feature_enabled()'s fallback path is slower than plain old boot_cpu_has(). Fixes: ec9404e4 ("x86/bhi: Add BHI mitigation knob") Signed-off-by:Josh Poimboeuf <jpoimboe@kernel.org> Signed-off-by:
Ingo Molnar <mingo@kernel.org> Reviewed-by:
Pawan Gupta <pawan.kumar.gupta@linux.intel.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Link: https://lore.kernel.org/r/ad3807424a3953f0323c011a643405619f2a4927.1712944776.git.jpoimboe@kernel.org
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7211274f