diff options
| author | Sean Christopherson <seanjc@google.com> | 2022-03-29 11:01:07 +0800 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2022-04-13 13:37:37 -0400 |
| commit | ca2a7c22a115d1a9a60ce4f61fe43d5fcaaaa516 (patch) | |
| tree | 681a5d27637010cc10786ca7e7a1f53da61dbb5f /arch/x86/kvm/mmu/paging_tmpl.h | |
| parent | aecce510fee5620bf1906f94772fdda3b9966455 (diff) | |
KVM: x86/mmu: Derive EPT violation RWX bits from EPTE RWX bits
Derive the mask of RWX bits reported on EPT violations from the mask of
RWX bits that are shoved into EPT entries; the layout is the same, the
EPT violation bits are simply shifted by three. Use the new shift and a
slight copy-paste of the mask derivation instead of completely open
coding the same to convert between the EPT entry bits and the exit
qualification when synthesizing a nested EPT Violation.
No functional change intended.
Cc: SU Hang <darcy.sh@antgroup.com>
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20220329030108.97341-3-darcy.sh@antgroup.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/mmu/paging_tmpl.h')
| -rw-r--r-- | arch/x86/kvm/mmu/paging_tmpl.h | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/arch/x86/kvm/mmu/paging_tmpl.h b/arch/x86/kvm/mmu/paging_tmpl.h index 9c6bdab9f29b..1dad8f3f2bb0 100644 --- a/arch/x86/kvm/mmu/paging_tmpl.h +++ b/arch/x86/kvm/mmu/paging_tmpl.h @@ -523,7 +523,13 @@ error: vcpu->arch.exit_qualification |= EPT_VIOLATION_ACC_READ; if (fetch_fault) vcpu->arch.exit_qualification |= EPT_VIOLATION_ACC_INSTR; - vcpu->arch.exit_qualification |= (pte_access & 0x7) << 3; + + /* + * Note, pte_access holds the raw RWX bits from the EPTE, not + * ACC_*_MASK flags! + */ + vcpu->arch.exit_qualification |= (pte_access & VMX_EPT_RWX_MASK) << + EPT_VIOLATION_RWX_SHIFT; } #endif walker->fault.address = addr; |