/* * Copyright (C) 2016 Glider bvba * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; version 2 of the License. */ #ifndef __DT_BINDINGS_POWER_R8A7793_SYSC_H__ #define __DT_BINDINGS_POWER_R8A7793_SYSC_H__ /* * These power domain indices match the numbers of the interrupt bits * representing the power areas in the various Interrupt Registers * (e.g. SYSCISR, Interrupt Status Register) * * Note that R-Car M2-N is identical to R-Car M2-W w.r.t. power domains. */ #define R8A7793_PD_CA15_CPU0 0 #define R8A7793_PD_CA15_CPU1 1 #define R8A7793_PD_CA15_SCU 12 #define R8A7793_PD_SH_4A 16 #define R8A7793_PD_SGX 20 /* Always-on power area */ #define R8A7793_PD_ALWAYS_ON 32 #endif /* __DT_BINDINGS_POWER_R8A7793_SYSC_H__ */ >
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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2017-02-03 17:10:28 +1100
committerMichael Ellerman <mpe@ellerman.id.au>2017-02-08 23:36:29 +1100
commitd7df2443cd5f67fc6ee7c05a88e4996e8177f91b (patch)
tree098a7c0ca4fceb8a65cb1f693c9d71990388933d /include/drm/drm_property.h
parenta0615a16f7d0ceb5804d295203c302d496d8ee91 (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 'include/drm/drm_property.h')