Commit b64d8d1e authored by Peter Xu's avatar Peter Xu Committed by Linus Torvalds
Browse files

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.

Fixes: 5a281062 ("userfaultfd: wp: add WP pagetable tracking to x86")
Reported-by: default avatarNaresh Kamboju <naresh.kamboju@linaro.org>
Reported-by: default avatarkernel test robot <lkp@intel.com>
Signed-off-by: default avatarPeter Xu <peterx@redhat.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Tested-by: default avatarNaresh Kamboju <naresh.kamboju@linaro.org>
Reviewed-by: default avatarAndrea Arcangeli <aarcange@redhat.com>
Cc: Hillf Danton <hdanton@sina.com>
Link: http://lkml.kernel.org/r/20200413141608.109211-1-peterx@redhat.com


Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 89b83f28

arch/x86/Kconfig

+1 −1
Original line number Diff line number Diff line
@@ -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

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