Message ID | 1485954097-26456-3-git-send-email-tim.gardner@canonical.com |
---|---|
State | New |
Headers | show |
diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c index f8eea19..46d0145 100644 --- a/arch/x86/kvm/emulate.c +++ b/arch/x86/kvm/emulate.c @@ -3533,8 +3533,15 @@ static int check_dr_read(struct x86_emulate_ctxt *ctxt) if ((cr4 & X86_CR4_DE) && (dr == 4 || dr == 5)) return emulate_ud(ctxt); - if (check_dr7_gd(ctxt)) + if (check_dr7_gd(ctxt)) { + ulong dr6; + + ctxt->ops->get_dr(ctxt, 6, &dr6); + dr6 &= ~15; + dr6 |= DR6_BD | DR6_RTM; + ctxt->ops->set_dr(ctxt, 6, dr6); return emulate_db(ctxt); + } return X86EMUL_CONTINUE; }