278d91c460
Make the FPU operate in non-lazy mode under SMP so that when the process that is currently using the FPU migrates to a different CPU, we don't have to ping its previous CPU to flush the FPU context. Signed-off-by: Akira Takeuchi <takeuchi.akr@jp.panasonic.com> Signed-off-by: Kiyoshi Owada <owada.kiyoshi@jp.panasonic.com> Signed-off-by: David Howells <dhowells@redhat.com>
30 lines
900 B
C
30 lines
900 B
C
/* MN10300 FPU management
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*
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* Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
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* Written by David Howells (dhowells@redhat.com)
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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 Licence
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* as published by the Free Software Foundation; either version
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* 2 of the Licence, or (at your option) any later version.
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*/
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#include <asm/fpu.h>
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/*
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* handle an FPU operational exception
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* - there's a possibility that if the FPU is asynchronous, the signal might
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* be meant for a process other than the current one
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*/
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asmlinkage
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void unexpected_fpu_exception(struct pt_regs *regs, enum exception_code code)
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{
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panic("An FPU exception was received, but there's no FPU enabled.");
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}
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/*
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* fill in the FPU structure for a core dump
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*/
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int dump_fpu(struct pt_regs *regs, elf_fpregset_t *fpreg)
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{
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return 0; /* not valid */
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}
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