According to APM vol 2, hardware ignores the low 12 bits in MSRPM and IOPM bitmaps. Therefore setting/unssetting these bits has no effect as far as VMRUN is concerned. Also, setting/unsetting these bits prevents tests from verifying hardware behavior. Signed-off-by: Krish Sadhukhan <krish.sadhukhan@xxxxxxxxxx> --- arch/x86/kvm/svm/nested.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/arch/x86/kvm/svm/nested.c b/arch/x86/kvm/svm/nested.c index ae53ae46ebca..fd42c8b7f99a 100644 --- a/arch/x86/kvm/svm/nested.c +++ b/arch/x86/kvm/svm/nested.c @@ -287,8 +287,6 @@ static void nested_load_control_from_vmcb12(struct vcpu_svm *svm, /* Copy it here because nested_svm_check_controls will check it. */ svm->nested.ctl.asid = control->asid; - svm->nested.ctl.msrpm_base_pa &= ~0x0fffULL; - svm->nested.ctl.iopm_base_pa &= ~0x0fffULL; } /* -- 2.27.0
