hwmon: (dme1737) Be less i2c-centric

[linux-2.6-omap-h63xx.git] / include / linux / kvm_host.h

diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index 07d68a8ae8e950bc21bdb86b8900aea4ee68b46e..8525afc53107faaaa993fa6ebae6c2d703eb718c 100644 (file)
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -121,6 +121,12 @@ struct kvm {
        struct kvm_coalesced_mmio_dev *coalesced_mmio_dev;
        struct kvm_coalesced_mmio_ring *coalesced_mmio_ring;
 #endif
+
+#ifdef KVM_ARCH_WANT_MMU_NOTIFIER
+       struct mmu_notifier mmu_notifier;
+       unsigned long mmu_notifier_seq;
+       long mmu_notifier_count;
+#endif
 };
 
 /* The guest did something we don't support. */
@@ -332,4 +338,22 @@ int kvm_trace_ioctl(unsigned int ioctl, unsigned long arg)
 #define kvm_trace_cleanup() ((void)0)
 #endif
 
+#ifdef KVM_ARCH_WANT_MMU_NOTIFIER
+static inline int mmu_notifier_retry(struct kvm_vcpu *vcpu, unsigned long mmu_seq)
+{
+       if (unlikely(vcpu->kvm->mmu_notifier_count))
+               return 1;
+       /*
+        * Both reads happen under the mmu_lock and both values are
+        * modified under mmu_lock, so there's no need of smb_rmb()
+        * here in between, otherwise mmu_notifier_count should be
+        * read before mmu_notifier_seq, see
+        * mmu_notifier_invalidate_range_end write side.
+        */
+       if (vcpu->kvm->mmu_notifier_seq != mmu_seq)
+               return 1;
+       return 0;
+}
+#endif
+
 #endif