5c7dd7acc3
repo: https://github.com/T-head-Semi/linux commit: b1313fe517ca3703119dcc99ef3bbf75ab42bcfb Change-Id: I6cbb35294024ea3a66140e311f4bb705fd7fd626
29 lines
735 B
C
29 lines
735 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.
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#include <asm/shmparam.h>
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extern void flush_dcache_page(struct page *page);
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static inline unsigned long pages_do_alias(unsigned long addr1,
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unsigned long addr2)
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{
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return (addr1 ^ addr2) & (SHMLBA-1);
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}
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static inline void clear_user_page(void *addr, unsigned long vaddr,
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struct page *page)
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{
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clear_page(addr);
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if (pages_do_alias((unsigned long) addr, vaddr & PAGE_MASK))
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flush_dcache_page(page);
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}
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static inline void copy_user_page(void *to, void *from, unsigned long vaddr,
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struct page *page)
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{
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copy_page(to, from);
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if (pages_do_alias((unsigned long) to, vaddr & PAGE_MASK))
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flush_dcache_page(page);
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}
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