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Diffstat (limited to 'arch/x86/kvm/mmu.h')
-rw-r--r--arch/x86/kvm/mmu.h9
1 files changed, 4 insertions, 5 deletions
diff --git a/arch/x86/kvm/mmu.h b/arch/x86/kvm/mmu.h
index b70df72..66b33b9 100644
--- a/arch/x86/kvm/mmu.h
+++ b/arch/x86/kvm/mmu.h
@@ -173,10 +173,9 @@ static inline u8 permission_fault(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu,
int index = (pfec >> 1) +
(smap >> (X86_EFLAGS_AC_BIT - PFERR_RSVD_BIT + 1));
bool fault = (mmu->permissions[index] >> pte_access) & 1;
+ u32 errcode = PFERR_PRESENT_MASK;
WARN_ON(pfec & (PFERR_PK_MASK | PFERR_RSVD_MASK));
- pfec |= PFERR_PRESENT_MASK;
-
if (unlikely(mmu->pkru_mask)) {
u32 pkru_bits, offset;
@@ -189,15 +188,15 @@ static inline u8 permission_fault(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu,
pkru_bits = (kvm_read_pkru(vcpu) >> (pte_pkey * 2)) & 3;
/* clear present bit, replace PFEC.RSVD with ACC_USER_MASK. */
- offset = pfec - 1 +
+ offset = (pfec & ~1) +
((pte_access & PT_USER_MASK) << (PFERR_RSVD_BIT - PT_USER_SHIFT));
pkru_bits &= mmu->pkru_mask >> offset;
- pfec |= -pkru_bits & PFERR_PK_MASK;
+ errcode |= -pkru_bits & PFERR_PK_MASK;
fault |= (pkru_bits != 0);
}
- return -(uint32_t)fault & pfec;
+ return -(u32)fault & errcode;
}
void kvm_mmu_invalidate_zap_all_pages(struct kvm *kvm);