x86 kvm page table walks: switch to explicit __get_user()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

diff --git a/arch/x86/kvm/mmu/paging_tmpl.h b/arch/x86/kvm/mmu/paging_tmpl.h
index 4e1ef04..5bea4cf 100644 (file)
--- a/arch/x86/kvm/mmu/paging_tmpl.h
+++ b/arch/x86/kvm/mmu/paging_tmpl.h
@@ -400,7 +400,7 @@ retry_walk:
                        goto error;
 
                ptep_user = (pt_element_t __user *)((void *)host_addr + offset);
-               if (unlikely(__copy_from_user(&pte, ptep_user, sizeof(pte))))
+               if (unlikely(__get_user(pte, ptep_user)))
                        goto error;
                walker->ptep_user[walker->level - 1] = ptep_user;