Commit f5f6145e authored by Krish Sadhukhan's avatar Krish Sadhukhan Committed by Paolo Bonzini
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KVM: x86: Move the check for upper 32 reserved bits of DR6 to separate function 



Signed-off-by: default avatarKrish Sadhukhan <krish.sadhukhan@oracle.com>
Message-Id: <20200522221954.32131-2-krish.sadhukhan@oracle.com>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent 12bc2132

arch/x86/kvm/x86.c

+1 −1
Original line number Diff line number Diff line
@@ -1133,7 +1133,7 @@ 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;

arch/x86/kvm/x86.h

+5 −0
Original line number Diff line number Diff line
@@ -360,6 +360,11 @@ 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);