KVM: MMU: Make the way of accessing lpage_info more generic

Large page information has two elements but one of them, write_count, alone
is accessed by a helper function.

This patch replaces this helper function with more generic one which returns
newly named kvm_lpage_info structure and use it to access the other element
rmap_pde.

Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp>
Signed-off-by: Avi Kivity <avi@redhat.com>

1 files changed, 6 insertions, 4 deletions

diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index ac4e83a1a10d..bd0da8f12500 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -146,6 +146,11 @@ struct kvm_vcpu {
  */
 #define KVM_MEM_MAX_NR_PAGES ((1UL << 31) - 1)
 
+struct kvm_lpage_info {
+        unsigned long rmap_pde;
+        int write_count;
+};
+
 struct kvm_memory_slot {
         gfn_t base_gfn;
         unsigned long npages;
@@ -153,10 +158,7 @@ struct kvm_memory_slot {
         unsigned long *rmap;
         unsigned long *dirty_bitmap;
         unsigned long *dirty_bitmap_head;
-        struct {
-                unsigned long rmap_pde;
-                int write_count;
-        } *lpage_info[KVM_NR_PAGE_SIZES - 1];
+        struct kvm_lpage_info *lpage_info[KVM_NR_PAGE_SIZES - 1];
         unsigned long userspace_addr;
         int user_alloc;
         int id;