[v1,05/22] KVM: x86: get rid of pic_irqchip()

Commit Message

David Hildenbrand March 14, 2017, 1:34 p.m. UTC

It seemed like a nice idea to encapsulate access to kvm->arch.vpic. But
as the usage is already mixed, internal locks are taken outside of i8259.c
and grepping for "vpic" only is much easier, let's just get rid of
pic_irqchip().

Signed-off-by: David Hildenbrand <[e-mail]>
---
 arch/x86/kvm/i8259.c    |  4 ++--
 arch/x86/kvm/irq.c      |  2 +-
 arch/x86/kvm/irq.h      |  5 -----
 arch/x86/kvm/irq_comm.c |  4 ++--
 arch/x86/kvm/x86.c      | 24 +++++++++++-------------
 5 files changed, 16 insertions(+), 23 deletions(-)

Patch

diff --git a/arch/x86/kvm/i8259.c b/arch/x86/kvm/i8259.c
index 73ea24d..64e4b92 100644
--- a/arch/x86/kvm/i8259.c
+++ b/arch/x86/kvm/i8259.c
@@ -239,7 +239,7 @@  static inline void pic_intack(struct kvm_kpic_state *s, int irq)
 int kvm_pic_read_irq(struct kvm *kvm)
 {
 	int irq, irq2, intno;
-	struct kvm_pic *s = pic_irqchip(kvm);
+	struct kvm_pic *s = kvm->arch.vpic;
 
 	s->output = 0;
 
@@ -576,7 +576,7 @@  static int picdev_eclr_read(struct kvm_vcpu *vcpu, struct kvm_io_device *dev,
  */
 static void pic_irq_request(struct kvm *kvm, int level)
 {
-	struct kvm_pic *s = pic_irqchip(kvm);
+	struct kvm_pic *s = kvm->arch.vpic;
 
 	if (!s->output)
 		s->wakeup_needed = true;
diff --git a/arch/x86/kvm/irq.c b/arch/x86/kvm/irq.c
index 60d91c9..5c24811 100644
--- a/arch/x86/kvm/irq.c
+++ b/arch/x86/kvm/irq.c
@@ -60,7 +60,7 @@  static int kvm_cpu_has_extint(struct kvm_vcpu *v)
 		if (irqchip_split(v->kvm))
 			return pending_userspace_extint(v);
 		else
-			return pic_irqchip(v->kvm)->output;
+			return v->kvm->arch.vpic->output;
 	} else
 		return 0;
 }
diff --git a/arch/x86/kvm/irq.h b/arch/x86/kvm/irq.h
index 184306e..2455f16 100644
--- a/arch/x86/kvm/irq.h
+++ b/arch/x86/kvm/irq.h
@@ -78,11 +78,6 @@  void kvm_pic_destroy(struct kvm *kvm);
 int kvm_pic_read_irq(struct kvm *kvm);
 void kvm_pic_update_irq(struct kvm_pic *s);
 
-static inline struct kvm_pic *pic_irqchip(struct kvm *kvm)
-{
-	return kvm->arch.vpic;
-}
-
 static inline int pic_in_kernel(struct kvm *kvm)
 {
 	return kvm->arch.irqchip_mode == KVM_IRQCHIP_KERNEL;
diff --git a/arch/x86/kvm/irq_comm.c b/arch/x86/kvm/irq_comm.c
index 0a026f8..45ab43e 100644
--- a/arch/x86/kvm/irq_comm.c
+++ b/arch/x86/kvm/irq_comm.c
@@ -42,7 +42,7 @@  static int kvm_set_pic_irq(struct kvm_kernel_irq_routing_entry *e,
 			   struct kvm *kvm, int irq_source_id, int level,
 			   bool line_status)
 {
-	struct kvm_pic *pic = pic_irqchip(kvm);
+	struct kvm_pic *pic = kvm->arch.vpic;
 	return kvm_pic_set_irq(pic, e->irqchip.pin, irq_source_id, level);
 }
 
@@ -236,7 +236,7 @@  void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id)
 		goto unlock;
 
 	kvm_ioapic_clear_all(kvm->arch.vioapic, irq_source_id);
-	kvm_pic_clear_all(pic_irqchip(kvm), irq_source_id);
+	kvm_pic_clear_all(kvm->arch.vpic, irq_source_id);
 unlock:
 	mutex_unlock(&kvm->irq_lock);
 }
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index fa8cceb..079bf6b 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -3721,18 +3721,17 @@  static int kvm_vm_ioctl_get_nr_mmu_pages(struct kvm *kvm)
 
 static int kvm_vm_ioctl_get_irqchip(struct kvm *kvm, struct kvm_irqchip *chip)
 {
+	struct kvm_pic *pic = kvm->arch.vpic;
 	int r;
 
 	r = 0;
 	switch (chip->chip_id) {
 	case KVM_IRQCHIP_PIC_MASTER:
-		memcpy(&chip->chip.pic,
-			&pic_irqchip(kvm)->pics[0],
+		memcpy(&chip->chip.pic, &pic->pics[0],
 			sizeof(struct kvm_pic_state));
 		break;
 	case KVM_IRQCHIP_PIC_SLAVE:
-		memcpy(&chip->chip.pic,
-			&pic_irqchip(kvm)->pics[1],
+		memcpy(&chip->chip.pic, &pic->pics[1],
 			sizeof(struct kvm_pic_state));
 		break;
 	case KVM_IRQCHIP_IOAPIC:
@@ -3747,23 +3746,22 @@  static int kvm_vm_ioctl_get_irqchip(struct kvm *kvm, struct kvm_irqchip *chip)
 
 static int kvm_vm_ioctl_set_irqchip(struct kvm *kvm, struct kvm_irqchip *chip)
 {
+	struct kvm_pic *pic = kvm->arch.vpic;
 	int r;
 
 	r = 0;
 	switch (chip->chip_id) {
 	case KVM_IRQCHIP_PIC_MASTER:
-		spin_lock(&pic_irqchip(kvm)->lock);
-		memcpy(&pic_irqchip(kvm)->pics[0],
-			&chip->chip.pic,
+		spin_lock(&pic->lock);
+		memcpy(&pic->pics[0], &chip->chip.pic,
 			sizeof(struct kvm_pic_state));
-		spin_unlock(&pic_irqchip(kvm)->lock);
+		spin_unlock(&pic->lock);
 		break;
 	case KVM_IRQCHIP_PIC_SLAVE:
-		spin_lock(&pic_irqchip(kvm)->lock);
-		memcpy(&pic_irqchip(kvm)->pics[1],
-			&chip->chip.pic,
+		spin_lock(&pic->lock);
+		memcpy(&pic->pics[1], &chip->chip.pic,
 			sizeof(struct kvm_pic_state));
-		spin_unlock(&pic_irqchip(kvm)->lock);
+		spin_unlock(&pic->lock);
 		break;
 	case KVM_IRQCHIP_IOAPIC:
 		r = kvm_set_ioapic(kvm, &chip->chip.ioapic);
@@ -3772,7 +3770,7 @@  static int kvm_vm_ioctl_set_irqchip(struct kvm *kvm, struct kvm_irqchip *chip)
 		r = -EINVAL;
 		break;
 	}
-	kvm_pic_update_irq(pic_irqchip(kvm));
+	kvm_pic_update_irq(pic);
 	return r;
 }