diff mbox series

[03/15] mm/userfaultfd: disable userfaultfd-wp on x86_32

Message ID 20200421011345.oj5QRcygo%akpm@linux-foundation.org (mailing list archive)
State New, archived
Headers show
Series [01/15] sh: fix build error in mm/init.c | expand

Commit Message

Andrew Morton April 21, 2020, 1:13 a.m. UTC 
From: Peter Xu <peterx@redhat.com>
Subject: mm/userfaultfd: disable userfaultfd-wp on x86_32

Userfaultfd-wp is not yet working on 32bit hosts, but it's accidentally
enabled previously.  Disable it.

Link: http://lkml.kernel.org/r/20200413141608.109211-1-peterx@redhat.com
Fixes: 5a281062af1d ("userfaultfd: wp: add WP pagetable tracking to x86")
Signed-off-by: Peter Xu <peterx@redhat.com>
Reported-by: Naresh Kamboju <naresh.kamboju@linaro.org>
Reported-by: kernel test robot <lkp@intel.com>
Tested-by: Naresh Kamboju <naresh.kamboju@linaro.org>
Reviewed-by: Andrea Arcangeli <aarcange@redhat.com>
Cc: Hillf Danton <hdanton@sina.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 arch/x86/Kconfig |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

--- a/arch/x86/Kconfig~mm-userfaultfd-disable-userfaultfd-wp-on-x86_32
+++ a/arch/x86/Kconfig
@@ -149,7 +149,7 @@  config X86
 	select HAVE_ARCH_TRACEHOOK
 	select HAVE_ARCH_TRANSPARENT_HUGEPAGE
 	select HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD if X86_64
-	select HAVE_ARCH_USERFAULTFD_WP		if USERFAULTFD
+	select HAVE_ARCH_USERFAULTFD_WP         if X86_64 && USERFAULTFD
 	select HAVE_ARCH_VMAP_STACK		if X86_64
 	select HAVE_ARCH_WITHIN_STACK_FRAMES
 	select HAVE_ASM_MODVERSIONS