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| author | Nadav Amit <nadav.amit@gmail.com> | 2014-06-18 17:19:23 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2014-06-19 12:52:14 +0200 |
| commit | 5777392e83c96e3a0799dd2985598e0fc76cf4aa (patch) | |
| tree | b9b9d7ee6afe5d0e1864750b292abd2bb11fea53 /arch/x86/kvm/vmx.c | |
| parent | 5381417f6a51293e7b8af1eb18aefa5d47976a71 (diff) | |
| download | lwn-5777392e83c96e3a0799dd2985598e0fc76cf4aa.tar.gz lwn-5777392e83c96e3a0799dd2985598e0fc76cf4aa.zip | |
KVM: x86: check DR6/7 high-bits are clear only on long-mode
When the guest sets DR6 and DR7, KVM asserts the high 32-bits are clear, and
otherwise injects a #GP exception. This exception should only be injected only
if running in long-mode.
Signed-off-by: Nadav Amit <namit@cs.technion.ac.il>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/vmx.c')
| -rw-r--r-- | arch/x86/kvm/vmx.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index a717c13b9466..b362a1a38e51 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -5184,7 +5184,7 @@ static int handle_dr(struct kvm_vcpu *vcpu) return 1; kvm_register_write(vcpu, reg, val); } else - if (kvm_set_dr(vcpu, dr, kvm_register_read(vcpu, reg))) + if (kvm_set_dr(vcpu, dr, kvm_register_readl(vcpu, reg))) return 1; skip_emulated_instruction(vcpu); |