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authorMauro Carvalho Chehab <mchehab@s-opensource.com>2016-12-05 09:41:43 -0200
committerJonathan Corbet <corbet@lwn.net>2016-12-05 14:21:35 -0700
commit822d289f2872317d2536028d063d1e1b9d9fd76f (patch)
treed155d954d51ee536e311cd9c8d59995a8bca4f19 /lib
parent79c87c30d0e6d02b2a7d0f1eed372d0979c03930 (diff)
docs: 00-INDEX: add missing entries for documentation files/dirs
Several directories and individual files don't have entries at 00-INDEX. Add them, using, as reference, the initial text inside the documentation file(s). Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Diffstat (limited to 'lib')
0 files changed, 0 insertions, 0 deletions
net-next.git/diff/tools/perf/util/annotate.h?h=nds-private-remove&id=d7df2443cd5f67fc6ee7c05a88e4996e8177f91b&id2=a0615a16f7d0ceb5804d295203c302d496d8ee91'>diff)
powerpc/mm: Fix spurrious segfaults on radix with autonuma
When autonuma (Automatic NUMA balancing) marks a PTE inaccessible it clears all the protection bits but leave the PTE valid. With the Radix MMU, an attempt at executing from such a PTE will take a fault with bit 35 of SRR1 set "SRR1_ISI_N_OR_G". It is thus incorrect to treat all such faults as errors. We should pass them to handle_mm_fault() for autonuma to deal with. The case of pages that are really not executable is handled by the existing test for VM_EXEC further down. That leaves us with catching the kernel attempts at executing user pages. We can catch that earlier, even before we do find_vma. It is never valid on powerpc for the kernel to take an exec fault to begin with. So fold that test with the existing test for the kernel faulting on kernel addresses to bail out early. Fixes: 1d18ad026844 ("powerpc/mm: Detect instruction fetch denied and report") Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Acked-by: Balbir Singh <bsingharora@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'tools/perf/util/annotate.h')