From: Andrew Morton <akpm@linux-foundation.org>
To: aarcange@redhat.com, akpm@linux-foundation.org, hdanton@sina.com,
linux-mm@kvack.org, lkp@intel.com, mm-commits@vger.kernel.org,
naresh.kamboju@linaro.org, peterx@redhat.com,
torvalds@linux-foundation.org
Subject: [patch 03/15] mm/userfaultfd: disable userfaultfd-wp on x86_32
Date: Mon, 20 Apr 2020 18:13:45 -0700 [thread overview]
Message-ID: <20200421011345.oj5QRcygo%akpm@linux-foundation.org> (raw)
In-Reply-To: <20200420181310.c18b3c0aa4dc5b3e5ec1be10@linux-foundation.org>
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(-)
--- 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
_
next prev parent reply other threads:[~2020-04-21 1:13 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-21 1:13 incoming Andrew Morton
2020-04-21 1:13 ` [patch 01/15] sh: fix build error in mm/init.c Andrew Morton
2020-04-21 1:13 ` [patch 02/15] slub: avoid redzone when choosing freepointer location Andrew Morton
2020-04-21 1:13 ` Andrew Morton [this message]
2020-04-21 1:13 ` [patch 04/15] MAINTAINERS: add an entry for kfifo Andrew Morton
2020-04-21 12:31 ` Andy Shevchenko
2020-04-21 1:13 ` [patch 05/15] mm/hugetlb: fix a addressing exception caused by huge_pte_offset Andrew Morton
2020-04-21 1:13 ` [patch 06/15] mm, gup: return EINTR when gup is interrupted by fatal signals Andrew Morton
2020-04-21 1:13 ` [patch 07/15] checkpatch: fix a typo in the regex for $allocFunctions Andrew Morton
2020-04-21 1:14 ` [patch 08/15] tools/build: tweak unused value workaround Andrew Morton
2020-04-21 1:14 ` [patch 09/15] mm/ksm: fix NULL pointer dereference when KSM zero page is enabled Andrew Morton
2020-04-21 1:14 ` [patch 10/15] mm/shmem: fix build without THP Andrew Morton
2020-04-21 1:14 ` [patch 11/15] vmalloc: fix remap_vmalloc_range() bounds checks Andrew Morton
2020-04-21 1:14 ` [patch 12/15] shmem: fix possible deadlocks on shmlock_user_lock Andrew Morton
2020-04-21 1:14 ` [patch 13/15] mm: shmem: disable interrupt when acquiring info->lock in userfaultfd_copy path Andrew Morton
2020-04-21 1:14 ` [patch 14/15] coredump: fix null pointer dereference on coredump Andrew Morton
2020-04-21 1:14 ` [patch 15/15] tools/vm: fix cross-compile build Andrew Morton
2020-04-21 5:43 ` mmotm 2020-04-20-22-43 uploaded Andrew Morton
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20200421011345.oj5QRcygo%akpm@linux-foundation.org \
--to=akpm@linux-foundation.org \
--cc=aarcange@redhat.com \
--cc=hdanton@sina.com \
--cc=linux-mm@kvack.org \
--cc=lkp@intel.com \
--cc=mm-commits@vger.kernel.org \
--cc=naresh.kamboju@linaro.org \
--cc=peterx@redhat.com \
--cc=torvalds@linux-foundation.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).