Merge tag 'kvm-3.8-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm

[pandora-kernel.git] / include / linux / kvm_host.h

diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index 91ae127..2c497ab 100644 (file)
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -42,19 +42,8 @@
  */
 #define KVM_MEMSLOT_INVALID    (1UL << 16)
 
-/*
- * If we support unaligned MMIO, at most one fragment will be split into two:
- */
-#ifdef KVM_UNALIGNED_MMIO
-#  define KVM_EXTRA_MMIO_FRAGMENTS 1
-#else
-#  define KVM_EXTRA_MMIO_FRAGMENTS 0
-#endif
-
-#define KVM_USER_MMIO_SIZE 8
-
-#define KVM_MAX_MMIO_FRAGMENTS \
-       (KVM_MMIO_SIZE / KVM_USER_MMIO_SIZE + KVM_EXTRA_MMIO_FRAGMENTS)
+/* Two fragments for cross MMIO pages. */
+#define KVM_MAX_MMIO_FRAGMENTS 2
 
 /*
  * For the normal pfn, the highest 12 bits should be zero,
@@ -754,7 +743,11 @@ static inline int kvm_deassign_device(struct kvm *kvm,
 static inline void kvm_guest_enter(void)
 {
        BUG_ON(preemptible());
-       vtime_account(current);
+       /*
+        * This is running in ioctl context so we can avoid
+        * the call to vtime_account() with its unnecessary idle check.
+        */
+       vtime_account_system_irqsafe(current);
        current->flags |= PF_VCPU;
        /* KVM does not hold any references to rcu protected data when it
         * switches CPU into a guest mode. In fact switching to a guest mode
@@ -768,7 +761,11 @@ static inline void kvm_guest_enter(void)
 
 static inline void kvm_guest_exit(void)
 {
-       vtime_account(current);
+       /*
+        * This is running in ioctl context so we can avoid
+        * the call to vtime_account() with its unnecessary idle check.
+        */
+       vtime_account_system_irqsafe(current);
        current->flags &= ~PF_VCPU;
 }