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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /arch/m68k/include/asm/page_no.h | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | arch/m68k/include/asm/page_no.h | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/arch/m68k/include/asm/page_no.h b/arch/m68k/include/asm/page_no.h new file mode 100644 index 000000000..c9d0d8415 --- /dev/null +++ b/arch/m68k/include/asm/page_no.h @@ -0,0 +1,38 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _M68K_PAGE_NO_H +#define _M68K_PAGE_NO_H + +#ifndef __ASSEMBLY__ + +extern unsigned long memory_start; +extern unsigned long memory_end; + +#define clear_page(page) memset((page), 0, PAGE_SIZE) +#define copy_page(to,from) memcpy((to), (from), PAGE_SIZE) + +#define clear_user_page(page, vaddr, pg) clear_page(page) +#define copy_user_page(to, from, vaddr, pg) copy_page(to, from) + +#define alloc_zeroed_user_highpage_movable(vma, vaddr) \ + alloc_page_vma(GFP_HIGHUSER_MOVABLE | __GFP_ZERO, vma, vaddr) +#define __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE_MOVABLE + +#define __pa(vaddr) ((unsigned long)(vaddr)) +#define __va(paddr) ((void *)((unsigned long)(paddr))) + +#define virt_to_pfn(kaddr) (__pa(kaddr) >> PAGE_SHIFT) +#define pfn_to_virt(pfn) __va((pfn) << PAGE_SHIFT) + +#define virt_to_page(addr) (mem_map + (((unsigned long)(addr)-PAGE_OFFSET) >> PAGE_SHIFT)) +#define page_to_virt(page) __va(((((page) - mem_map) << PAGE_SHIFT) + PAGE_OFFSET)) + +#define pfn_to_page(pfn) virt_to_page(pfn_to_virt(pfn)) +#define page_to_pfn(page) virt_to_pfn(page_to_virt(page)) +#define pfn_valid(pfn) ((pfn) < max_mapnr) + +#define virt_addr_valid(kaddr) (((unsigned long)(kaddr) >= PAGE_OFFSET) && \ + ((unsigned long)(kaddr) < memory_end)) + +#endif /* __ASSEMBLY__ */ + +#endif /* _M68K_PAGE_NO_H */ |