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(parent: 8f21bd0) | patch
powerpc/sysfs: Disable writing to PURR in guest mode
authorMadhavan Srinivasan <maddy@linux.vnet.ibm.com>
Tue, 1 Oct 2013 19:04:10 +0000 (00:34 +0530)
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>
Thu, 3 Oct 2013 07:22:53 +0000 (17:22 +1000)
commitd1211af3049f4c9c1d8d4eb8f8098cc4f4f0d0c7
treee7dedb4f171f28b2a07f4fc759a5a7de6fc1d1e1tree | snapshot
parent8f21bd0090052e740944f9397e2be5ac7957ded7commit | diff
powerpc/sysfs: Disable writing to PURR in guest mode

arch/powerpc/kernel/sysfs.c exports PURR with write permission.
This may be valid for kernel in phyp mode. But writing to
the file in guest mode causes crash due to a priviledge violation

Signed-off-by: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
CC: <stable@vger.kernel.org>
arch/powerpc/kernel/sysfs.c diff | blob | history
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