KVM: MMU: remove the arithmetic of parent pte rmap

Parent pte rmap and page rmap are very similar, so use the same arithmetic
for them

Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

1 files changed, 1 insertions, 6 deletions

diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index e6a4a57e142b..ff17deb6e98b 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -227,14 +227,10 @@ struct kvm_mmu_page {
          * in this shadow page.
          */
         DECLARE_BITMAP(slot_bitmap, KVM_MEMORY_SLOTS + KVM_PRIVATE_MEM_SLOTS);
-        bool multimapped;         /* More than one parent_pte? */
         bool unsync;
         int root_count;          /* Currently serving as active root */
         unsigned int unsync_children;
-        union {
-                u64 *parent_pte;               /* !multimapped */
-                struct hlist_head parent_ptes; /* multimapped, kvm_pte_chain */
-        };
+        unsigned long parent_ptes;      /* Reverse mapping for parent_pte */
         DECLARE_BITMAP(unsync_child_bitmap, 512);
 };
 
@@ -346,7 +342,6 @@ struct kvm_vcpu_arch {
          * put it here to avoid allocation */
         struct kvm_pv_mmu_op_buffer mmu_op_buffer;
 
-        struct kvm_mmu_memory_cache mmu_pte_chain_cache;
         struct kvm_mmu_memory_cache mmu_pte_list_desc_cache;
         struct kvm_mmu_memory_cache mmu_page_cache;
         struct kvm_mmu_memory_cache mmu_page_header_cache;