[GIT,PULL] Late regression fix for arm64

Message ID	20140529142512.GA6168@arm.com
State	New
Headers	show Return-Path: <patchwork-forward+bncBDUJHMNZY4KRBZ4GTWOAKGQEZV6CWEI@linaro.org> Received-SPF: pass (google.com: domain of patch+caf_=patchwork-forward=linaro.org@linaro.org designates 209.85.220.174 as permitted sender) client-ip=209.85.220.174; Received-SPF: none (google.com: linux-kernel-owner@vger.kernel.org does not designate permitted sender hosts) client-ip=209.132.180.67; Date: Thu, 29 May 2014 15:25:12 +0100 From: Will Deacon <will.deacon@arm.com> To: torvalds@linux-foundation.org Cc: catalin.marinas@arm.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [GIT PULL] Late regression fix for arm64 Message-ID: <20140529142512.GA6168@arm.com> MIME-Version: 1.0 User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org Precedence: list Mailing-list: list patchwork-forward@linaro.org; contact patchwork-forward+owners@linaro.org Content-Type: text/plain; charset=us-ascii Content-Disposition: inline

Message ID

20140529142512.GA6168@arm.com

State

New

Headers

Received-SPF: pass (google.com: domain of
	patch+caf_=patchwork-forward=linaro.org@linaro.org designates
	209.85.220.174 as permitted sender) client-ip=209.85.220.174; 
Received-SPF: none (google.com: linux-kernel-owner@vger.kernel.org does not
	designate permitted sender hosts) client-ip=209.132.180.67; 
Date: Thu, 29 May 2014 15:25:12 +0100
From: Will Deacon <will.deacon@arm.com>
To: torvalds@linux-foundation.org
Cc: catalin.marinas@arm.com, linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Subject: [GIT PULL] Late regression fix for arm64
Message-ID: <20140529142512.GA6168@arm.com>
MIME-Version: 1.0
User-Agent: Mutt/1.5.23 (2014-03-12)
Sender: linux-kernel-owner@vger.kernel.org
Precedence: list
Mailing-list: list patchwork-forward@linaro.org;
	contact patchwork-forward+owners@linaro.org
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline

Message

Will Deacon May 29, 2014, 2:25 p.m. UTC

Hi Linus,

Catalin's currently on holiday [1], so I'm dealing with the arm64 tree
for a change. Unfortunately, it's not as quiet as I'd like and we've got
a fix for a horrible THP regression introduced during the merge window.
The symptom tends to be CoW failures for tasks that end up using
transparent hugepages, which ultimately means random userspace breakage
for anything that uses large anonymous mappings and forks.

Please can you pull this for 3.15?

Cheers,

Will

[1] http://lists.infradead.org/pipermail/linux-arm-kernel/2014-May/259319.html

--->8

The following changes since commit c7208164e66f63e3ec1759b98087849286410741:

  Linux 3.15-rc7 (2014-05-25 16:06:00 -0700)

are available in the git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git tags/arm64-fixes

for you to fetch changes up to ceb218359de22e70980801d4fa04fffbfc44adb8:

  arm64: mm: fix pmd_write CoW brokenness (2014-05-29 11:31:14 +0100)

----------------------------------------------------------------
- Fix CoW regression for transparent hugepages by routing set_pmd_at to
  set_pte_at, which correctly handles PTE_WRITE and will mark the
  resulting table entry as read-only where appropriate.

----------------------------------------------------------------
Will Deacon (1):
      arm64: mm: fix pmd_write CoW brokenness

 arch/arm64/include/asm/pgtable.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

[GIT,PULL] Late regression fix for arm64

Pull-request

Message