dfff0fa65a
This wires up clear_user_highpage() on SH-4 and subsequently converts the SH7705 32kB cache mode over to using it. Now that the SH-4 implementation handles all of the dcache purging directly in the aliasing case, there is no need to do this in the default clear_page() implementation. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
34 lines
725 B
C
34 lines
725 B
C
/*
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* arch/sh/mm/pg-nommu.c
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*
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* copy_page()/__copy_user()/__clear_user() implementations for MMUless SH.
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*
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* Copyright (C) 2003 Paul Mundt
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*/
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/string.h>
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#include <asm/page.h>
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#include <asm/uaccess.h>
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void copy_page(void *to, void *from)
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{
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memcpy(to, from, PAGE_SIZE);
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}
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__kernel_size_t __copy_user(void *to, const void *from, __kernel_size_t n)
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{
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memcpy(to, from, n);
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return 0;
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}
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__kernel_size_t __clear_user(void *to, __kernel_size_t n)
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{
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memset(to, 0, n);
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return 0;
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}
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