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| author | Krish Sadhukhan <krish.sadhukhan@oracle.com> | 2020-07-08 02:39:56 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-07-08 22:21:59 +0200 |
| commit | 761e4169346553c180bbd4a383aedd72f905bc9a (patch) | |
| tree | ced456fa86e62cae7839526c65627c22048597b5 /arch/x86/kvm/x86.h | |
| parent | KVM: x86: Make CR4.VMXE reserved for the guest (diff) | |
| download | linux-761e4169346553c180bbd4a383aedd72f905bc9a.tar.xz linux-761e4169346553c180bbd4a383aedd72f905bc9a.zip | |
KVM: nSVM: Check that MBZ bits in CR3 and CR4 are not set on vmrun of nested guests
According to section "Canonicalization and Consistency Checks" in APM vol. 2
the following guest state is illegal:
"Any MBZ bit of CR3 is set."
"Any MBZ bit of CR4 is set."
Suggeted-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Krish Sadhukhan <krish.sadhukhan@oracle.com>
Message-Id: <1594168797-29444-3-git-send-email-krish.sadhukhan@oracle.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/x86.h')
| -rw-r--r-- | arch/x86/kvm/x86.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/kvm/x86.h b/arch/x86/kvm/x86.h index 10441fbb4073..224670d7c245 100644 --- a/arch/x86/kvm/x86.h +++ b/arch/x86/kvm/x86.h @@ -369,6 +369,7 @@ static inline bool kvm_dr6_valid(u64 data) void kvm_load_guest_xsave_state(struct kvm_vcpu *vcpu); void kvm_load_host_xsave_state(struct kvm_vcpu *vcpu); u64 kvm_spec_ctrl_valid_bits(struct kvm_vcpu *vcpu); +int kvm_valid_cr4(struct kvm_vcpu *vcpu, unsigned long cr4); bool kvm_vcpu_exit_request(struct kvm_vcpu *vcpu); #define KVM_MSR_RET_INVALID 2 |