diff options
| author |   Sean Christopherson <seanjc@google.com> | 2021-06-22 10:57:37 -0700 |
|---|---|---|
| committer |   Paolo Bonzini <pbonzini@redhat.com> | 2021-06-24 18:00:47 -0400 |
| commit | fdaa293598f908adb945001dabb305225144e183 (patch) | |
| tree | b12ff32bef0ae8548334e55203f436de8c3a7fd2 /arch/x86/kvm/mmu.h | |
| parent | KVM: x86/mmu: Drop redundant rsvd bits reset for nested NPT (diff) | |
| download | linux-dev-fdaa293598f908adb945001dabb305225144e183.tar.xz linux-dev-fdaa293598f908adb945001dabb305225144e183.zip | |
KVM: x86/mmu: Get CR0.WP from MMU, not vCPU, in shadow page fault
Use the current MMU instead of vCPU state to query CR0.WP when handling
a page fault. In the nested NPT case, the current CR0.WP reflects L2,
whereas the page fault is shadowing L1's NPT. Practically speaking, this
is a nop a NPT walks are always user faults, but fix it up for
consistency.
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20210622175739.3610207-53-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/mmu.h')
| -rw-r--r-- | arch/x86/kvm/mmu.h | 5 |
1 files changed, 0 insertions, 5 deletions
diff --git a/arch/x86/kvm/mmu.h b/arch/x86/kvm/mmu.h index 62844bacd13f..83e6c6965f1e 100644 --- a/arch/x86/kvm/mmu.h +++ b/arch/x86/kvm/mmu.h @@ -165,11 +165,6 @@ static inline bool is_writable_pte(unsigned long pte) return pte & PT_WRITABLE_MASK; } -static inline bool is_write_protection(struct kvm_vcpu *vcpu) -{ - return kvm_read_cr0_bits(vcpu, X86_CR0_WP); -} - /* * Check if a given access (described through the I/D, W/R and U/S bits of a * page fault error code pfec) causes a permission fault with the given PTE |