diff options
Diffstat (limited to 'arch/arm64/mm')
| -rw-r--r-- | arch/arm64/mm/copypage.c | 25 |
1 files changed, 21 insertions, 4 deletions
diff --git a/arch/arm64/mm/copypage.c b/arch/arm64/mm/copypage.c index 2ee7b73433a5..4a2233fa674e 100644 --- a/arch/arm64/mm/copypage.c +++ b/arch/arm64/mm/copypage.c @@ -6,18 +6,35 @@ * Copyright (C) 2012 ARM Ltd. */ +#include <linux/bitops.h> #include <linux/mm.h> #include <asm/page.h> #include <asm/cacheflush.h> +#include <asm/cpufeature.h> +#include <asm/mte.h> -void __cpu_copy_user_page(void *kto, const void *kfrom, unsigned long vaddr) +void copy_highpage(struct page *to, struct page *from) { - struct page *page = virt_to_page(kto); + struct page *kto = page_address(to); + struct page *kfrom = page_address(from); + copy_page(kto, kfrom); - flush_dcache_page(page); + + if (system_supports_mte() && test_bit(PG_mte_tagged, &from->flags)) { + set_bit(PG_mte_tagged, &to->flags); + mte_copy_page_tags(kto, kfrom); + } +} +EXPORT_SYMBOL(copy_highpage); + +void copy_user_highpage(struct page *to, struct page *from, + unsigned long vaddr, struct vm_area_struct *vma) +{ + copy_highpage(to, from); + flush_dcache_page(to); } -EXPORT_SYMBOL_GPL(__cpu_copy_user_page); +EXPORT_SYMBOL_GPL(copy_user_highpage); void __cpu_clear_user_page(void *kaddr, unsigned long vaddr) { |