diff options
| author | Paolo Bonzini <pbonzini@redhat.com> | 2025-03-03 11:31:50 -0500 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2025-03-14 14:20:58 -0400 |
| commit | 3fee4837ef405597971e9486e46a92270eadae5e (patch) | |
| tree | aff62313ae027887649b26395b2683817d6c6ed2 /arch/x86/kvm/x86.c | |
| parent | KVM: x86: Introduce Intel specific quirk KVM_X86_QUIRK_IGNORE_GUEST_PAT (diff) | |
| download | linux-3fee4837ef405597971e9486e46a92270eadae5e.tar.gz linux-3fee4837ef405597971e9486e46a92270eadae5e.zip | |
KVM: x86: remove shadow_memtype_mask
The IGNORE_GUEST_PAT quirk is inapplicable, and thus always-disabled,
if shadow_memtype_mask is zero. As long as vmx_get_mt_mask is not
called for the shadow paging case, there is no need to consult
shadow_memtype_mask and it can be removed altogether.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/x86.c')
| -rw-r--r-- | arch/x86/kvm/x86.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index fa658bc85b8e..d4da2d936745 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -13567,8 +13567,10 @@ static void kvm_noncoherent_dma_assignment_start_or_stop(struct kvm *kvm) * due to toggling the "ignore PAT" bit. Zap all SPTEs when the first * (or last) non-coherent device is (un)registered to so that new SPTEs * with the correct "ignore guest PAT" setting are created. + * + * If KVM always honors guest PAT, however, there is nothing to do. */ - if (kvm_mmu_may_ignore_guest_pat(kvm)) + if (kvm_check_has_quirk(kvm, KVM_X86_QUIRK_IGNORE_GUEST_PAT)) kvm_zap_gfn_range(kvm, gpa_to_gfn(0), gpa_to_gfn(~0ULL)); } |