]> git.baikalelectronics.ru Git - kernel.git/commit
projects / kernel.git / commit
? search:
summary | shortlog | log | commit | commitdiff | tree
(parent: 822ea37) | patch
arm64: mm: only wrprotect clean ptes if they are present
authorWill Deacon <will.deacon@arm.com>
Wed, 9 Jan 2013 11:08:10 +0000 (11:08 +0000)
committerCatalin Marinas <catalin.marinas@arm.com>
Thu, 10 Jan 2013 10:43:44 +0000 (10:43 +0000)
commita07081cdeb0447b40b09e87e6520b4f35129765b
tree5fc357a4979da3d355735215a01900b3f2e2994ctree | snapshot
parent822ea37a33e7ca91495a21414ae75c481795513acommit | diff
arm64: mm: only wrprotect clean ptes if they are present

Marking non-present ptes as read-only can corrupt file ptes, breaking
things like swap and file mappings.

This patch ensures that we only manipulate user pte bits when the pte
is marked present.

Cc: <stable@vger.kernel.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
arch/arm64/include/asm/pgtable.h diff | blob | history
Linux Kernel Source Tree.