[22/42] KVM: SVM: remove needless mmap_sem acquision from nested_svm_map

Commit Message

Avi Kivity Nov. 16, 2009, 12:19 p.m. UTC

None

Patch

diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index 92048a6..f54c4f9 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -1396,10 +1396,7 @@  static void *nested_svm_map(struct vcpu_svm *svm, u64 gpa, enum km_type idx)
 {
 	struct page *page;
 
-	down_read(&current->mm->mmap_sem);
 	page = gfn_to_page(svm->vcpu.kvm, gpa >> PAGE_SHIFT);
-	up_read(&current->mm->mmap_sem);
-
 	if (is_error_page(page))
 		goto error;