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| author | Vitaly Kuznetsov <vkuznets@redhat.com> | 2022-02-02 10:50:57 +0100 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2022-02-10 13:50:44 -0500 |
| commit | 73c25546d47f65165ae50f225272e05629fab164 (patch) | |
| tree | 74178afcc376c08afb42b90c790685c64d0f7c9f /arch/x86/kvm/svm/nested.c | |
| parent | 951cb0a3b5f2acc61ed84c752fb0bcef6806496f (diff) | |
| download | linux-73c25546d47f65165ae50f225272e05629fab164.tar.gz linux-73c25546d47f65165ae50f225272e05629fab164.tar.bz2 linux-73c25546d47f65165ae50f225272e05629fab164.zip | |
KVM: nSVM: Track whether changes in L0 require MSR bitmap for L2 to be rebuilt
Similar to nVMX commit ed2a4800ae9d ("KVM: nVMX: Track whether changes in
L0 require MSR bitmap for L2 to be rebuilt"), introduce a flag to keep
track of whether MSR bitmap for L2 needs to be rebuilt due to changes in
MSR bitmap for L1 or switching to a different L2.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Message-Id: <20220202095100.129834-2-vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/svm/nested.c')
| -rw-r--r-- | arch/x86/kvm/svm/nested.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86/kvm/svm/nested.c b/arch/x86/kvm/svm/nested.c index 39d280e7e80e..74c218bce375 100644 --- a/arch/x86/kvm/svm/nested.c +++ b/arch/x86/kvm/svm/nested.c @@ -193,6 +193,8 @@ static bool nested_svm_vmrun_msrpm(struct vcpu_svm *svm) svm->nested.msrpm[p] = svm->msrpm[p] | value; } + svm->nested.force_msr_bitmap_recalc = false; + svm->vmcb->control.msrpm_base_pa = __sme_set(__pa(svm->nested.msrpm)); return true; @@ -494,6 +496,7 @@ static void nested_vmcb02_prepare_save(struct vcpu_svm *svm, struct vmcb *vmcb12 if (svm->nested.vmcb12_gpa != svm->nested.last_vmcb12_gpa) { new_vmcb12 = true; svm->nested.last_vmcb12_gpa = svm->nested.vmcb12_gpa; + svm->nested.force_msr_bitmap_recalc = true; } if (unlikely(new_vmcb12 || vmcb_is_dirty(vmcb12, VMCB_SEG))) { @@ -1495,6 +1498,7 @@ static int svm_set_nested_state(struct kvm_vcpu *vcpu, if (WARN_ON_ONCE(ret)) goto out_free; + svm->nested.force_msr_bitmap_recalc = true; kvm_make_request(KVM_REQ_GET_NESTED_STATE_PAGES, vcpu); ret = 0; |