Merge branch 'kvm-updates/2.6.36' of git://git.kernel.org/pub/scm/virt/kvm/kvm

* 'kvm-updates/2.6.36' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: Fix reboot on Intel hosts
  KVM: fix irqfd assign/deassign race

2 files changed, 5 insertions, 2 deletions

diff --git a/virt/kvm/eventfd.c b/virt/kvm/eventfd.c
index 66cf65b510b1..c1f1e3c62984 100644
--- a/virt/kvm/eventfd.c
+++ b/virt/kvm/eventfd.c
@@ -218,7 +218,6 @@ kvm_irqfd_assign(struct kvm *kvm, int fd, int gsi)
         events = file->f_op->poll(file, &irqfd->pt);
 
         list_add_tail(&irqfd->list, &kvm->irqfds.items);
-        spin_unlock_irq(&kvm->irqfds.lock);
 
         /*
          * Check if there was an event already pending on the eventfd
@@ -227,6 +226,8 @@ kvm_irqfd_assign(struct kvm *kvm, int fd, int gsi)
         if (events & POLLIN)
                 schedule_work(&irqfd->inject);
 
+        spin_unlock_irq(&kvm->irqfds.lock);
+
         /*
          * do not drop the file until the irqfd is fully initialized, otherwise
          * we might race against the POLLHUP
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index d4853a54771a..5186e728c53e 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -1970,10 +1970,12 @@ static int kvm_cpu_hotplug(struct notifier_block *notifier, unsigned long val,
 
 asmlinkage void kvm_handle_fault_on_reboot(void)
 {
-        if (kvm_rebooting)
+        if (kvm_rebooting) {
                 /* spin while reset goes on */
+                local_irq_enable();
                 while (true)
                         ;
+        }
         /* Fault while not rebooting.  We want the trace. */
         BUG();
 }