From: Marcelo Tosatti <[email protected]> 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 <[email protected]> Acked-by: Alexander Graf <[email protected]> Signed-off-by: Avi Kivity <[email protected]> --- 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; -- 1.6.5.2 -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
