Commit 4f209989 authored by Jim Mattson's avatar Jim Mattson Committed by Sean Christopherson
Browse files

KVM: VMX: Guest usage of IA32_SPEC_CTRL is likely 



At this point in time, most guests (in the default, out-of-the-box
configuration) are likely to use IA32_SPEC_CTRL.  Therefore, drop the
compiler hint that it is unlikely for KVM to be intercepting WRMSR of
IA32_SPEC_CTRL.

Signed-off-by: default avatarJim Mattson <jmattson@google.com>
Reviewed-by: default avatarSean Christopherson <seanjc@google.com>
Link: https://lore.kernel.org/r/20221019213620.1953281-2-jmattson@google.com


Signed-off-by: default avatarSean Christopherson <seanjc@google.com>
parent 9cc40932

arch/x86/kvm/vmx/vmx.c

+1 −1
Original line number Diff line number Diff line
@@ -858,7 +858,7 @@ unsigned int __vmx_vcpu_run_flags(struct vcpu_vmx *vmx) 
	 * to change it directly without causing a vmexit.  In that case read

	 * it after vmexit and store it in vmx->spec_ctrl.

	 */

	if (unlikely(!msr_write_intercepted(vmx, MSR_IA32_SPEC_CTRL)))

	if (!msr_write_intercepted(vmx, MSR_IA32_SPEC_CTRL))

		flags |= VMX_RUN_SAVE_SPEC_CTRL;



	return flags;