---

yaml --- r: 172291 b: refs/heads/master c: 355be0b h: refs/heads/master i: 172289: 8e40c7e 172287: f95a71c v: v3
git-mirror · Dec 3, 2009 · f8e78ab · f8e78ab
1 parent 4c85299
commit f8e78ab
Show file tree

Hide file tree

Showing 5 changed files with 27 additions and 39 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 201d945bcfb0d53e67c9c081f7c28532eb4669c7
+refs/heads/master: 355be0b9300579e02275d7d19374806a974ce622
diff --git a/trunk/arch/x86/include/asm/kvm_host.h b/trunk/arch/x86/include/asm/kvm_host.h
@@ -475,8 +475,8 @@ struct kvm_x86_ops {
 	void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu);
 	void (*vcpu_put)(struct kvm_vcpu *vcpu);
 
-	int (*set_guest_debug)(struct kvm_vcpu *vcpu,
-			       struct kvm_guest_debug *dbg);
+	void (*set_guest_debug)(struct kvm_vcpu *vcpu,
+				struct kvm_guest_debug *dbg);
 	int (*get_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata);
 	int (*set_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
 	u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg);

diff --git a/trunk/arch/x86/kvm/svm.c b/trunk/arch/x86/kvm/svm.c
@@ -1065,26 +1065,16 @@ static void update_db_intercept(struct kvm_vcpu *vcpu)
 		vcpu->guest_debug = 0;
 }
 
-static int svm_guest_debug(struct kvm_vcpu *vcpu, struct kvm_guest_debug *dbg)
+static void svm_guest_debug(struct kvm_vcpu *vcpu, struct kvm_guest_debug *dbg)
 {
-	int old_debug = vcpu->guest_debug;
 	struct vcpu_svm *svm = to_svm(vcpu);
 
-	vcpu->guest_debug = dbg->control;
-
-	update_db_intercept(vcpu);
-
 	if (vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP)
 		svm->vmcb->save.dr7 = dbg->arch.debugreg[7];
 	else
 		svm->vmcb->save.dr7 = vcpu->arch.dr7;
 
-	if (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP)
-		svm->vmcb->save.rflags |= X86_EFLAGS_TF | X86_EFLAGS_RF;
-	else if (old_debug & KVM_GUESTDBG_SINGLESTEP)
-		svm->vmcb->save.rflags &= ~(X86_EFLAGS_TF | X86_EFLAGS_RF);
-
-	return 0;
+	update_db_intercept(vcpu);
 }
 
 static void load_host_msrs(struct kvm_vcpu *vcpu)

diff --git a/trunk/arch/x86/kvm/vmx.c b/trunk/arch/x86/kvm/vmx.c
@@ -1096,30 +1096,14 @@ static void vmx_cache_reg(struct kvm_vcpu *vcpu, enum kvm_reg reg)
 	}
 }
 
-static int set_guest_debug(struct kvm_vcpu *vcpu, struct kvm_guest_debug *dbg)
+static void set_guest_debug(struct kvm_vcpu *vcpu, struct kvm_guest_debug *dbg)
 {
-	int old_debug = vcpu->guest_debug;
-	unsigned long flags;
-
-	vcpu->guest_debug = dbg->control;
-	if (!(vcpu->guest_debug & KVM_GUESTDBG_ENABLE))
-		vcpu->guest_debug = 0;
-
 	if (vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP)
 		vmcs_writel(GUEST_DR7, dbg->arch.debugreg[7]);
 	else
 		vmcs_writel(GUEST_DR7, vcpu->arch.dr7);
 
-	flags = vmcs_readl(GUEST_RFLAGS);
-	if (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP)
-		flags |= X86_EFLAGS_TF | X86_EFLAGS_RF;
-	else if (old_debug & KVM_GUESTDBG_SINGLESTEP)
-		flags &= ~(X86_EFLAGS_TF | X86_EFLAGS_RF);
-	vmcs_writel(GUEST_RFLAGS, flags);
-
 	update_exception_bitmap(vcpu);
-
-	return 0;
 }
 
 static __init int cpu_has_kvm_support(void)

diff --git a/trunk/arch/x86/kvm/x86.c b/trunk/arch/x86/kvm/x86.c
@@ -4472,12 +4472,19 @@ int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
 int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
 					struct kvm_guest_debug *dbg)
 {
-	int i, r;
+	unsigned long rflags;
+	int old_debug;
+	int i;
 
 	vcpu_load(vcpu);
 
-	if ((dbg->control & (KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_USE_HW_BP)) ==
-	    (KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_USE_HW_BP)) {
+	old_debug = vcpu->guest_debug;
+
+	vcpu->guest_debug = dbg->control;
+	if (!(vcpu->guest_debug & KVM_GUESTDBG_ENABLE))
+		vcpu->guest_debug = 0;
+
+	if (vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP) {
 		for (i = 0; i < KVM_NR_DB_REGS; ++i)
 			vcpu->arch.eff_db[i] = dbg->arch.debugreg[i];
 		vcpu->arch.switch_db_regs =
@@ -4488,16 +4495,23 @@ int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
 		vcpu->arch.switch_db_regs = (vcpu->arch.dr7 & DR7_BP_EN_MASK);
 	}
 
-	r = kvm_x86_ops->set_guest_debug(vcpu, dbg);
+	rflags = kvm_x86_ops->get_rflags(vcpu);
+	if (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP)
+		rflags |= X86_EFLAGS_TF | X86_EFLAGS_RF;
+	else if (old_debug & KVM_GUESTDBG_SINGLESTEP)
+		rflags &= ~(X86_EFLAGS_TF | X86_EFLAGS_RF);
+	kvm_x86_ops->set_rflags(vcpu, rflags);
 
-	if (dbg->control & KVM_GUESTDBG_INJECT_DB)
+	kvm_x86_ops->set_guest_debug(vcpu, dbg);
+
+	if (vcpu->guest_debug & KVM_GUESTDBG_INJECT_DB)
 		kvm_queue_exception(vcpu, DB_VECTOR);
-	else if (dbg->control & KVM_GUESTDBG_INJECT_BP)
+	else if (vcpu->guest_debug & KVM_GUESTDBG_INJECT_BP)
 		kvm_queue_exception(vcpu, BP_VECTOR);
 
 	vcpu_put(vcpu);
 
-	return r;
+	return 0;
 }
 
 /*