diff options
Diffstat (limited to 'virt/kvm/ioapic.c')
| -rw-r--r-- | virt/kvm/ioapic.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/virt/kvm/ioapic.c b/virt/kvm/ioapic.c index 469b9faae665..2a5667173995 100644 --- a/virt/kvm/ioapic.c +++ b/virt/kvm/ioapic.c @@ -243,6 +243,7 @@ static void ioapic_mmio_read(struct kvm_io_device *this, gpa_t addr, int len, ioapic_debug("addr %lx\n", (unsigned long)addr); ASSERT(!(addr & 0xf)); /* check alignment */ + mutex_lock(&ioapic->kvm->irq_lock); addr &= 0xff; switch (addr) { case IOAPIC_REG_SELECT: @@ -269,6 +270,7 @@ static void ioapic_mmio_read(struct kvm_io_device *this, gpa_t addr, int len, default: printk(KERN_WARNING "ioapic: wrong length %d\n", len); } + mutex_unlock(&ioapic->kvm->irq_lock); } static void ioapic_mmio_write(struct kvm_io_device *this, gpa_t addr, int len, @@ -280,6 +282,8 @@ static void ioapic_mmio_write(struct kvm_io_device *this, gpa_t addr, int len, ioapic_debug("ioapic_mmio_write addr=%p len=%d val=%p\n", (void*)addr, len, val); ASSERT(!(addr & 0xf)); /* check alignment */ + + mutex_lock(&ioapic->kvm->irq_lock); if (len == 4 || len == 8) data = *(u32 *) val; else { @@ -305,6 +309,7 @@ static void ioapic_mmio_write(struct kvm_io_device *this, gpa_t addr, int len, default: break; } + mutex_unlock(&ioapic->kvm->irq_lock); } void kvm_ioapic_reset(struct kvm_ioapic *ioapic) |