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| author | Marcelo Tosatti <mtosatti@redhat.com> | 2009-09-08 14:47:38 -0300 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2009-12-03 09:32:10 +0200 |
| commit | e8b3433a5c062e94e34cadb6144c10689a497bc3 (patch) | |
| tree | 51af19ba8f6a25e02dc8a1530a0d7bbd2f5a7a3b /arch/x86/kvm/svm.c | |
| parent | 80ced186d1761d2a66163d9eeb468ddb1f7e0697 (diff) | |
| download | kernel_samsung_espresso10-e8b3433a5c062e94e34cadb6144c10689a497bc3.zip kernel_samsung_espresso10-e8b3433a5c062e94e34cadb6144c10689a497bc3.tar.gz kernel_samsung_espresso10-e8b3433a5c062e94e34cadb6144c10689a497bc3.tar.bz2 | |
KVM: SVM: remove needless mmap_sem acquision from nested_svm_map
nested_svm_map unnecessarily takes mmap_sem around gfn_to_page, since
gfn_to_page / get_user_pages are responsible for it.
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Acked-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/x86/kvm/svm.c')
| -rw-r--r-- | arch/x86/kvm/svm.c | 3 |
1 files changed, 0 insertions, 3 deletions
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(¤t->mm->mmap_sem); page = gfn_to_page(svm->vcpu.kvm, gpa >> PAGE_SHIFT); - up_read(¤t->mm->mmap_sem); - if (is_error_page(page)) goto error; |