cff169880e
The amd64 kernel handles certain types of exceptions on a dedicated stack. Currently the sizes of these stacks are all hard-coded to PAGE_SIZE, but for at least NMI handling it can be useful to use larger stacks. Add constants to intr_machdep.h to make this easier to tweak. No functional change intended. Reviewed by: kib MFC after: 1 week Sponsored by: NetApp, Inc. Sponsored by: Klara, Inc. Differential Revision: https://reviews.freebsd.org/D27076
50 lines
1.9 KiB
C
50 lines
1.9 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2003 John Baldwin <jhb@FreeBSD.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef __MACHINE_INTR_MACHDEP_H__
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#define __MACHINE_INTR_MACHDEP_H__
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#include <x86/intr_machdep.h>
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/*
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* The following data structure holds per-cpu data, and is placed just
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* above the top of the space used for the NMI and MC# stacks.
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*/
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struct nmi_pcpu {
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register_t np_pcpu;
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register_t __padding; /* pad to 16 bytes */
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};
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#define DBLFAULT_STACK_SIZE PAGE_SIZE
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#define NMI_STACK_SIZE PAGE_SIZE
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#define MCE_STACK_SIZE PAGE_SIZE
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#define DBG_STACK_SIZE PAGE_SIZE
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#endif /* !__MACHINE_INTR_MACHDEP_H__ */
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