diff options
| author | Vitaly Kuznetsov <vkuznets@redhat.com> | 2022-08-30 16:37:37 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2022-09-26 19:03:02 +0300 |
| commit | 37d145ef62ff4f424ed05f8c99dc1c9ec67ff133 (patch) | |
| tree | 75c4b8ccf01612519c5cc375aee15dad3c943cac /arch/x86/kvm/vmx | |
| parent | 0809d9b05a9154edecbd02649ddab296f4e9a227 (diff) | |
KVM: nVMX: Use cached host MSR_IA32_VMX_MISC value for setting up nested MSR
vmcs_config has cached host MSR_IA32_VMX_MISC value, use it for setting
up nested MSR_IA32_VMX_MISC in nested_vmx_setup_ctls_msrs() and avoid the
redundant rdmsr().
No (real) functional change intended.
Reviewed-by: Jim Mattson <jmattson@google.com>
Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com>
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Sean Christopherson <seanjc@google.com>
Link: https://lore.kernel.org/r/20220830133737.1539624-34-vkuznets@redhat.com
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/vmx')
| -rw-r--r-- | arch/x86/kvm/vmx/nested.c | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/arch/x86/kvm/vmx/nested.c b/arch/x86/kvm/vmx/nested.c index af807cc2ad15..6c8b61a7904e 100644 --- a/arch/x86/kvm/vmx/nested.c +++ b/arch/x86/kvm/vmx/nested.c @@ -6758,10 +6758,7 @@ void nested_vmx_setup_ctls_msrs(struct vmcs_config *vmcs_conf, u32 ept_caps) msrs->secondary_ctls_high |= SECONDARY_EXEC_ENCLS_EXITING; /* miscellaneous data */ - rdmsr(MSR_IA32_VMX_MISC, - msrs->misc_low, - msrs->misc_high); - msrs->misc_low &= VMX_MISC_SAVE_EFER_LMA; + msrs->misc_low = (u32)vmcs_conf->misc & VMX_MISC_SAVE_EFER_LMA; msrs->misc_low |= MSR_IA32_VMX_MISC_VMWRITE_SHADOW_RO_FIELDS | VMX_MISC_EMULATED_PREEMPTION_TIMER_RATE | |