1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/kvm/mmu.c b/drivers/kvm/mmu.c
index 4624f3789b9a..101cd5377a89 100644
--- a/drivers/kvm/mmu.c
+++ b/drivers/kvm/mmu.c
@@ -1535,6 +1535,25 @@ nomem:
 	return -ENOMEM;
 }
 
+/*
+ * Caculate mmu pages needed for kvm.
+ */
+unsigned int kvm_mmu_calculate_mmu_pages(struct kvm *kvm)
+{
+	int i;
+	unsigned int nr_mmu_pages;
+	unsigned int  nr_pages = 0;
+
+	for (i = 0; i < kvm->nmemslots; i++)
+		nr_pages += kvm->memslots[i].npages;
+
+	nr_mmu_pages = nr_pages * KVM_PERMILLE_MMU_PAGES / 1000;
+	nr_mmu_pages = max(nr_mmu_pages,
+			(unsigned int) KVM_MIN_ALLOC_MMU_PAGES);
+
+	return nr_mmu_pages;
+}
+
 #ifdef AUDIT
 
 static const char *audit_msg;