KVM: vmx: handle_dr does not handle RSP correctly

The RSP register is not automatically cached, causing mov DR instruction with
RSP to fail.  Instead the regular register accessing interface should be used.

Signed-off-by: Nadav Amit <namit@cs.technion.ac.il>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index a5fd47e4abfc5b2984e51cd072ef0f6e13583d0e..61e818d807325dbeac326ded92e4e871f2b0d063 100644 (file)
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -5143,7 +5143,7 @@ static int handle_dr(struct kvm_vcpu *vcpu)
                        return 1;
                kvm_register_write(vcpu, reg, val);
        } else
-               if (kvm_set_dr(vcpu, dr, vcpu->arch.regs[reg]))
+               if (kvm_set_dr(vcpu, dr, kvm_register_read(vcpu, reg)))
                        return 1;
 
        skip_emulated_instruction(vcpu);