KVM: Rename kvm_arch_mmu_write_protect_pt_masked to be more generic for log dirty

We don't have to write protect guest memory for dirty logging if architecture
supports hardware dirty logging, such as PML on VMX, so rename it to be more
generic.

Signed-off-by: Kai Huang <kai.huang@linux.intel.com>
Reviewed-by: Xiao Guangrong <guangrong.xiao@linux.intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 19 insertions, 2 deletions

diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index 0ed9f795e4f0..b18e65ce3683 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -1216,7 +1216,7 @@ static bool __rmap_write_protect(struct kvm *kvm, unsigned long *rmapp,
 }
 
 /**
- * kvm_arch_mmu_write_protect_pt_masked - write protect selected PT level pages
+ * kvm_mmu_write_protect_pt_masked - write protect selected PT level pages
  * @kvm: kvm instance
  * @slot: slot to protect
  * @gfn_offset: start of the BITS_PER_LONG pages we care about
@@ -1225,7 +1225,7 @@ static bool __rmap_write_protect(struct kvm *kvm, unsigned long *rmapp,
  * Used when we do not need to care about huge page mappings: e.g. during dirty
  * logging we do not have any such mappings.
  */
-void kvm_arch_mmu_write_protect_pt_masked(struct kvm *kvm,
+static void kvm_mmu_write_protect_pt_masked(struct kvm *kvm,
                                      struct kvm_memory_slot *slot,
                                      gfn_t gfn_offset, unsigned long mask)
 {
@@ -1241,6 +1241,23 @@ void kvm_arch_mmu_write_protect_pt_masked(struct kvm *kvm,
         }
 }
 
+/**
+ * kvm_arch_mmu_enable_log_dirty_pt_masked - enable dirty logging for selected
+ * PT level pages.
+ *
+ * It calls kvm_mmu_write_protect_pt_masked to write protect selected pages to
+ * enable dirty logging for them.
+ *
+ * Used when we do not need to care about huge page mappings: e.g. during dirty
+ * logging we do not have any such mappings.
+ */
+void kvm_arch_mmu_enable_log_dirty_pt_masked(struct kvm *kvm,
+                                struct kvm_memory_slot *slot,
+                                gfn_t gfn_offset, unsigned long mask)
+{
+        kvm_mmu_write_protect_pt_masked(kvm, slot, gfn_offset, mask);
+}
+
 static bool rmap_write_protect(struct kvm *kvm, u64 gfn)
 {
         struct kvm_memory_slot *slot;