@@ -1096,7 +1096,7 @@ static int __kvm_set_dr(struct kvm_vcpu *vcpu, int dr, unsigned long val)
case 4:
/* fall through */
case 6:
- if (val & 0xffffffff00000000ULL)
+ if (!kvm_dr6_valid(val))
return -1; /* #GP */
vcpu->arch.dr6 = (val & DR6_VOLATILE) | kvm_dr6_fixed(vcpu);
break;
@@ -354,6 +354,11 @@ static inline bool kvm_dr7_valid(u64 data)
/* Bits [63:32] are reserved */
return !(data >> 32);
}
+static inline bool kvm_dr6_valid(u64 data)
+{
+ /* Bits [63:32] are reserved */
+ return !(data >> 32);
+}
void kvm_load_guest_xsave_state(struct kvm_vcpu *vcpu);
void kvm_load_host_xsave_state(struct kvm_vcpu *vcpu);
Signed-off-by: Krish Sadhukhan <krish.sadhukhan@oracle.com> --- arch/x86/kvm/x86.c | 2 +- arch/x86/kvm/x86.h | 5 +++++ 2 files changed, 6 insertions(+), 1 deletion(-)