Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6

[linux-2.6] / virt / kvm / kvm_main.c

diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index c82cf15730a1e85c751483f75944e8905c0baa10..2d29e260da3d1b56830794c8dfb1719119195086 100644 (file)
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -522,6 +522,7 @@ unsigned long gfn_to_hva(struct kvm *kvm, gfn_t gfn)
                return bad_hva();
        return (slot->userspace_addr + (gfn - slot->base_gfn) * PAGE_SIZE);
 }
+EXPORT_SYMBOL_GPL(gfn_to_hva);
 
 /*
  * Requires current->mm->mmap_sem to be held
@@ -757,25 +758,26 @@ void mark_page_dirty(struct kvm *kvm, gfn_t gfn)
  */
 void kvm_vcpu_block(struct kvm_vcpu *vcpu)
 {
-       DECLARE_WAITQUEUE(wait, current);
+       DEFINE_WAIT(wait);
 
-       add_wait_queue(&vcpu->wq, &wait);
+       for (;;) {
+               prepare_to_wait(&vcpu->wq, &wait, TASK_INTERRUPTIBLE);
+
+               if (kvm_cpu_has_interrupt(vcpu))
+                       break;
+               if (kvm_cpu_has_pending_timer(vcpu))
+                       break;
+               if (kvm_arch_vcpu_runnable(vcpu))
+                       break;
+               if (signal_pending(current))
+                       break;
 
-       /*
-        * We will block until either an interrupt or a signal wakes us up
-        */
-       while (!kvm_cpu_has_interrupt(vcpu)
-              && !kvm_cpu_has_pending_timer(vcpu)
-              && !signal_pending(current)
-              && !kvm_arch_vcpu_runnable(vcpu)) {
-               set_current_state(TASK_INTERRUPTIBLE);
                vcpu_put(vcpu);
                schedule();
                vcpu_load(vcpu);
        }
 
-       __set_current_state(TASK_RUNNING);
-       remove_wait_queue(&vcpu->wq, &wait);
+       finish_wait(&vcpu->wq, &wait);
 }
 
 void kvm_resched(struct kvm_vcpu *vcpu)
@@ -834,16 +836,9 @@ static const struct file_operations kvm_vcpu_fops = {
  */
 static int create_vcpu_fd(struct kvm_vcpu *vcpu)
 {
-       int fd, r;
-       struct inode *inode;
-       struct file *file;
-
-       r = anon_inode_getfd(&fd, &inode, &file,
-                            "kvm-vcpu", &kvm_vcpu_fops, vcpu);
-       if (r) {
+       int fd = anon_inode_getfd("kvm-vcpu", &kvm_vcpu_fops, vcpu);
+       if (fd < 0)
                kvm_put_kvm(vcpu->kvm);
-               return r;
-       }
        return fd;
 }
 
@@ -1168,19 +1163,15 @@ static const struct file_operations kvm_vm_fops = {
 
 static int kvm_dev_ioctl_create_vm(void)
 {
-       int fd, r;
-       struct inode *inode;
-       struct file *file;
+       int fd;
        struct kvm *kvm;
 
        kvm = kvm_create_vm();
        if (IS_ERR(kvm))
                return PTR_ERR(kvm);
-       r = anon_inode_getfd(&fd, &inode, &file, "kvm-vm", &kvm_vm_fops, kvm);
-       if (r) {
+       fd = anon_inode_getfd("kvm-vm", &kvm_vm_fops, kvm);
+       if (fd < 0)
                kvm_put_kvm(kvm);
-               return r;
-       }
 
        return fd;
 }