/* * linux/fs/adfs/dir_f.h * * Copyright (C) 1999 Russell King * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * * Structures of directories on the F format disk */ #ifndef ADFS_DIR_F_H #define ADFS_DIR_F_H /* * Directory header */ struct adfs_dirheader { unsigned char startmasseq; unsigned char startname[4]; }; #define ADFS_NEWDIR_SIZE 2048 #define ADFS_NUM_DIR_ENTRIES 77 /* * Directory entries */ struct adfs_direntry { #define ADFS_F_NAME_LEN 10 char dirobname[ADFS_F_NAME_LEN]; __u8 dirload[4]; __u8 direxec[4]; __u8 dirlen[4]; __u8 dirinddiscadd[3]; __u8 newdiratts; }; /* * Directory tail */ union adfs_dirtail { struct { unsigned char dirlastmask; char dirname[10]; unsigned char dirparent[3]; char dirtitle[19]; unsigned char reserved[14]; unsigned char endmasseq; unsigned char endname[4]; unsigned char dircheckbyte; } old; struct { unsigned char dirlastmask; unsigned char reserved[2]; unsigned char dirparent[3]; char dirtitle[19]; char dirname[10]; unsigned char endmasseq; unsigned char endname[4]; unsigned char dircheckbyte; } new; }; #endif net-next plumbingsTobias Klauser
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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 /sound/isa/galaxy/azt1605.c
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 'sound/isa/galaxy/azt1605.c')