KVM: Convert PIC lock from raw spinlock to ordinary spinlock

The PIC code used to be called from preempt_disable() context, which
wasn't very good for PREEMPT_RT.  That is no longer the case, so move
back from raw_spinlock_t to spinlock_t.

Signed-off-by: Avi Kivity <avi@redhat.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

3 files changed, 8 insertions, 8 deletions

diff --git a/arch/x86/kvm/i8259.c b/arch/x86/kvm/i8259.c
index ab1bb8ff9a8d..dd54c5bb2e5e 100644
--- a/arch/x86/kvm/i8259.c
+++ b/arch/x86/kvm/i8259.c
@@ -39,7 +39,7 @@ static void pic_irq_request(struct kvm *kvm, int level);
 static void pic_lock(struct kvm_pic *s)
         __acquires(&s->lock)
 {
-        raw_spin_lock(&s->lock);
+        spin_lock(&s->lock);
 }
 
 static void pic_unlock(struct kvm_pic *s)
@@ -51,7 +51,7 @@ static void pic_unlock(struct kvm_pic *s)
 
         s->wakeup_needed = false;
 
-        raw_spin_unlock(&s->lock);
+        spin_unlock(&s->lock);
 
         if (wakeup) {
                 kvm_for_each_vcpu(i, vcpu, s->kvm) {
@@ -569,7 +569,7 @@ struct kvm_pic *kvm_create_pic(struct kvm *kvm)
         s = kzalloc(sizeof(struct kvm_pic), GFP_KERNEL);
         if (!s)
                 return NULL;
-        raw_spin_lock_init(&s->lock);
+        spin_lock_init(&s->lock);
         s->kvm = kvm;
         s->pics[0].elcr_mask = 0xf8;
         s->pics[1].elcr_mask = 0xde;
diff --git a/arch/x86/kvm/irq.h b/arch/x86/kvm/irq.h
index 63c314502993..ba910d149410 100644
--- a/arch/x86/kvm/irq.h
+++ b/arch/x86/kvm/irq.h
@@ -60,7 +60,7 @@ struct kvm_kpic_state {
 };
 
 struct kvm_pic {
-        raw_spinlock_t lock;
+        spinlock_t lock;
         bool wakeup_needed;
         unsigned pending_acks;
         struct kvm *kvm;
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 0b021e16f9dd..3adf6921e88e 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -3011,18 +3011,18 @@ static int kvm_vm_ioctl_set_irqchip(struct kvm *kvm, struct kvm_irqchip *chip)
         r = 0;
         switch (chip->chip_id) {
         case KVM_IRQCHIP_PIC_MASTER:
-                raw_spin_lock(&pic_irqchip(kvm)->lock);
+                spin_lock(&pic_irqchip(kvm)->lock);
                 memcpy(&pic_irqchip(kvm)->pics[0],
                         &chip->chip.pic,
                         sizeof(struct kvm_pic_state));
-                raw_spin_unlock(&pic_irqchip(kvm)->lock);
+                spin_unlock(&pic_irqchip(kvm)->lock);
                 break;
         case KVM_IRQCHIP_PIC_SLAVE:
-                raw_spin_lock(&pic_irqchip(kvm)->lock);
+                spin_lock(&pic_irqchip(kvm)->lock);
                 memcpy(&pic_irqchip(kvm)->pics[1],
                         &chip->chip.pic,
                         sizeof(struct kvm_pic_state));
-                raw_spin_unlock(&pic_irqchip(kvm)->lock);
+                spin_unlock(&pic_irqchip(kvm)->lock);
                 break;
         case KVM_IRQCHIP_IOAPIC:
                 r = kvm_set_ioapic(kvm, &chip->chip.ioapic);