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

diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
index cea8c07..cb40f72 100644 (file)
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -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;