Re: [PATCH v2 1/6] x86/bugs: Move the X86_FEATURE_USE_IBPB check into callers

[Sean Christopherson]

On Thu, Feb 27, 2025, Yosry Ahmed wrote:
> indirect_branch_prediction_barrier() only performs the MSR write if
> X86_FEATURE_USE_IBPB is set, using alternative_msr_write(). In
> preparation for removing X86_FEATURE_USE_IBPB, move the feature check
> into the callers so that they can be addressed one-by-one, and use
> X86_FEATURE_IBPB instead to guard the MSR write.
> 
> Signed-off-by: Yosry Ahmed <yosry.ahmed@xxxxxxxxx>
> Acked-by: Josh Poimboeuf <jpoimboe@xxxxxxxxxx>
> ---

Acked-by: Sean Christopherson <seanjc@xxxxxxxxxx>