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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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e6b1185f77
Defer dcache flushing to __sync_icache_dcache by calling flush_dcache_page which clears PG_dcache_clean flag. Acked-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Ashok Kumar <ashoks@broadcom.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
38 lines
1.1 KiB
C
38 lines
1.1 KiB
C
/*
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* Based on arch/arm/mm/copypage.c
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*
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* Copyright (C) 2002 Deep Blue Solutions Ltd, All Rights Reserved.
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* Copyright (C) 2012 ARM Ltd.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <linux/mm.h>
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#include <asm/page.h>
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#include <asm/cacheflush.h>
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void __cpu_copy_user_page(void *kto, const void *kfrom, unsigned long vaddr)
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{
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struct page *page = virt_to_page(kto);
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copy_page(kto, kfrom);
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flush_dcache_page(page);
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}
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EXPORT_SYMBOL_GPL(__cpu_copy_user_page);
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void __cpu_clear_user_page(void *kaddr, unsigned long vaddr)
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{
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clear_page(kaddr);
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}
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EXPORT_SYMBOL_GPL(__cpu_clear_user_page);
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