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| author | Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> | 2017-02-24 14:59:21 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-02-24 17:46:56 -0800 |
| commit | c137a2757b88658ce61c74b25ff650ecda7f09d8 (patch) | |
| tree | d7b4174beda612a536cd4d51d003c9cbadeb22ce /security | |
| parent | 595cd8f256d24face93b2722927ec9c980419c26 (diff) | |
| download | linux-exynos-c137a2757b88658ce61c74b25ff650ecda7f09d8.tar.gz linux-exynos-c137a2757b88658ce61c74b25ff650ecda7f09d8.tar.bz2 linux-exynos-c137a2757b88658ce61c74b25ff650ecda7f09d8.zip | |
powerpc/mm/autonuma: switch ppc64 to its own implementation of saved write
With this our protnone becomes a present pte with READ/WRITE/EXEC bit
cleared. By default we also set _PAGE_PRIVILEGED on such pte. This is
now used to help us identify a protnone pte that as saved write bit.
For such pte, we will clear the _PAGE_PRIVILEGED bit. The pte still
remain non-accessible from both user and kernel.
[aneesh.kumar@linux.vnet.ibm.com: v3]
Link: http://lkml.kernel.org/r/1487498625-10891-4-git-send-email-aneesh.kumar@linux.vnet.ibm.com
Link: http://lkml.kernel.org/r/1487050314-3892-3-git-send-email-aneesh.kumar@linux.vnet.ibm.com
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Acked-by: Michael Neuling <mikey@neuling.org>
Cc: Rik van Riel <riel@surriel.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Michael Ellerman <michaele@au1.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'security')
0 files changed, 0 insertions, 0 deletions