diff options
| author | Sean Christopherson <sean.j.christopherson@intel.com> | 2020-06-22 14:58:29 -0700 |
|---|---|---|
| committer | Sasha Levin <sashal@kernel.org> | 2020-06-30 15:37:07 -0400 |
| commit | 8ccc6ac51eac8d0735328a54a7bf44ec6d82a18c (patch) | |
| tree | 414ebac823fb69cb751e02ca3c63c20d4936d843 /arch/x86/kvm/mmu.c | |
| parent | 5774f9fa563bb51294dd3262b4fac1f4dc6f0c3c (diff) | |
KVM: nVMX: Plumb L2 GPA through to PML emulation
commit 2dbebf7ae1ed9a420d954305e2c9d5ed39ec57c3 upstream.
Explicitly pass the L2 GPA to kvm_arch_write_log_dirty(), which for all
intents and purposes is vmx_write_pml_buffer(), instead of having the
latter pull the GPA from vmcs.GUEST_PHYSICAL_ADDRESS. If the dirty bit
update is the result of KVM emulation (rare for L2), then the GPA in the
VMCS may be stale and/or hold a completely unrelated GPA.
Fixes: c5f983f6e8455 ("nVMX: Implement emulated Page Modification Logging")
Cc: stable@vger.kernel.org
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Message-Id: <20200622215832.22090-2-sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/x86/kvm/mmu.c')
| -rw-r--r-- | arch/x86/kvm/mmu.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c index a3824ae9a634..aab02ea2d2cb 100644 --- a/arch/x86/kvm/mmu.c +++ b/arch/x86/kvm/mmu.c @@ -1819,10 +1819,10 @@ void kvm_arch_mmu_enable_log_dirty_pt_masked(struct kvm *kvm, * Emulate arch specific page modification logging for the * nested hypervisor */ -int kvm_arch_write_log_dirty(struct kvm_vcpu *vcpu) +int kvm_arch_write_log_dirty(struct kvm_vcpu *vcpu, gpa_t l2_gpa) { if (kvm_x86_ops->write_log_dirty) - return kvm_x86_ops->write_log_dirty(vcpu); + return kvm_x86_ops->write_log_dirty(vcpu, l2_gpa); return 0; } |