KVM: Count the number of dirty pages for dirty logging
Needed for the next patch which uses this number to decide how to write
protect a slot.
Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp>
Signed-off-by: Avi Kivity <avi@redhat.com>
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index c6a2ec9..7c654aa 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -181,6 +181,7 @@
unsigned long *rmap;
unsigned long *dirty_bitmap;
unsigned long *dirty_bitmap_head;
+ unsigned long nr_dirty_pages;
struct kvm_lpage_info *lpage_info[KVM_NR_PAGE_SIZES - 1];
unsigned long userspace_addr;
int user_alloc;