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| author | Balbir Singh <bsingharora@gmail.com> | 2016-11-30 03:35:36 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2016-11-30 09:19:01 +0300 |
| commit | 0ab5171b8971282d7562b77f9b14137a827117fc (patch) | |
| tree | 7136afdb2aa02fd3aa05ab376a2ee434f9701b7d /kernel/kexec_file.c | |
| parent | f0f7fe1ac35330f077357c787ec5bd8958bf300d (diff) | |
| download | linux-0ab5171b8971282d7562b77f9b14137a827117fc.tar.xz | |
powerpc/mm: Fix no execute fault handling on pre-POWER5
Aneesh/Ben reported that the change to do_page_fault() we made in commit
1d18ad026844 ("powerpc/mm: Detect instruction fetch denied and report")
needs to handle the case where CPU_FTR_COHERENT_ICACHE is missing but we
have CPU_FTR_NOEXECUTE. In those cases the check added for
SRR1_ISI_N_OR_G might trigger a false positive.
This patch adds a check for CPU_FTR_COHERENT_ICACHE in addition to the
MSR value.
Fixes: 1d18ad026844 ("powerpc/mm: Detect instruction fetch denied and report")
Reported-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Balbir Singh <bsingharora@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'kernel/kexec_file.c')
0 files changed, 0 insertions, 0 deletions