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e821fa4245
Using an si_code of 0 that aliases with SI_USER is clearly the wrong thing todo, and causes problems in interesting ways. For use in unknown_exception the recently defined TRAP_UNK semantically is a perfect fit. For use in RunModeException it looks like something more specific than TRAP_UNK could be used. No one has bothered to find a better fit than the broken si_code of 0 in all of these years and I don't see an obvious better fit so TRAP_UNK is switching RunModeException to return TRAP_UNK is clearly an improvement. Recent history suggests no actually cares about crazy corner cases of the kernel behavior like this so I don't expect any regressions from changing this. However if something does happen this change is easy to revert. Though I wonder if SIGKILL might not be a better fit. Cc: Paul Mackerras <paulus@samba.org> Cc: Kumar Gala <kumar.gala@freescale.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: linuxppc-dev@lists.ozlabs.org Fixes: 9bad068c24d7 ("[PATCH] ppc32: support for e500 and 85xx") Fixes: 0ed70f6105ef ("PPC32: Provide proper siginfo information on various exceptions.") History Tree: https://git.kernel.org/pub/scm/linux/kernel/git/tglx/history.git Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
19 lines
540 B
C
19 lines
540 B
C
/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
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#ifndef _ASM_POWERPC_SIGINFO_H
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#define _ASM_POWERPC_SIGINFO_H
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/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#ifdef __powerpc64__
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# define __ARCH_SI_PREAMBLE_SIZE (4 * sizeof(int))
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#endif
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#include <asm-generic/siginfo.h>
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#endif /* _ASM_POWERPC_SIGINFO_H */
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