Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
28 lines
676 B
C
28 lines
676 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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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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