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authorBalbir Singh <bsingharora@gmail.com>2016-11-30 11:35:36 +1100
committerMichael Ellerman <mpe@ellerman.id.au>2016-11-30 17:19:01 +1100
commit0ab5171b8971282d7562b77f9b14137a827117fc (patch)
tree7136afdb2aa02fd3aa05ab376a2ee434f9701b7d /kernel/kexec_file.c
parentf0f7fe1ac35330f077357c787ec5bd8958bf300d (diff)
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')
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