a29263b656
The contents of the amd64 version are kernel-only and incompatible with other headers when compiled for i386 userspace with _KERNEL defined. Just ifdef the whole file out in that case rather than giving this file the full x86 treatment since it's not needed for current use cases (procstat zfs support). Reviewed by: jhb, imp
56 lines
2.0 KiB
C
56 lines
2.0 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2003, 2005 Alan L. Cox <alc@cs.rice.edu>
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* All rights reserved.
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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_SF_BUF_H_
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#define _MACHINE_SF_BUF_H_
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#ifdef __amd64__
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/*
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* On this machine, the only purpose for which sf_buf is used is to implement
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* an opaque pointer required by the machine-independent parts of the kernel.
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* That pointer references the vm_page that is "mapped" by the sf_buf. The
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* actual mapping is provided by the direct virtual-to-physical mapping.
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*/
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static inline vm_offset_t
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sf_buf_kva(struct sf_buf *sf)
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{
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return (PHYS_TO_DMAP(VM_PAGE_TO_PHYS((vm_page_t)sf)));
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}
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static inline vm_page_t
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sf_buf_page(struct sf_buf *sf)
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{
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return ((vm_page_t)sf);
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}
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#endif /* __amd64__ */
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#endif /* !_MACHINE_SF_BUF_H_ */
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