projects / mirror_ubuntu-bionic-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 5c01b46b AB |
2 | #ifndef __ASM_CACHEFLUSH_H |
| 3 | #define __ASM_CACHEFLUSH_H | |
| 4 | ||
| 5 | /* Keep includes the same across arches. */ | |
| 6 | #include <linux/mm.h> | |
| 7 | ||
| 8 | /* | |
| 9 | * The cache doesn't need to be flushed when TLB entries change when | |
| 10 | * the cache is mapped to physical memory, not virtual memory | |
| 11 | */ | |
| 12 | #define flush_cache_all() do { } while (0) | |
| 13 | #define flush_cache_mm(mm) do { } while (0) | |
| 14 | #define flush_cache_dup_mm(mm) do { } while (0) | |
| 15 | #define flush_cache_range(vma, start, end) do { } while (0) | |
| 16 | #define flush_cache_page(vma, vmaddr, pfn) do { } while (0) | |
| 2d4dc890 | 17 | #define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0 |
| 5c01b46b AB |
18 | #define flush_dcache_page(page) do { } while (0) |
| 19 | #define flush_dcache_mmap_lock(mapping) do { } while (0) | |
| 20 | #define flush_dcache_mmap_unlock(mapping) do { } while (0) | |
| 21 | #define flush_icache_range(start, end) do { } while (0) | |
| 22 | #define flush_icache_page(vma,pg) do { } while (0) | |
| 23 | #define flush_icache_user_range(vma,pg,adr,len) do { } while (0) | |
| 24 | #define flush_cache_vmap(start, end) do { } while (0) | |
| 25 | #define flush_cache_vunmap(start, end) do { } while (0) | |
| 26 | ||
| 27 | #define copy_to_user_page(vma, page, vaddr, dst, src, len) \ | |
| f68aa5b4 MF |
28 | do { \ |
| 29 | memcpy(dst, src, len); \ | |
| 30 | flush_icache_user_range(vma, page, vaddr, len); \ | |
| 31 | } while (0) | |
| 5c01b46b AB |
32 | #define copy_from_user_page(vma, page, vaddr, dst, src, len) \ |
| 33 | memcpy(dst, src, len) | |
| 34 | ||
| 35 | #endif /* __ASM_CACHEFLUSH_H */ |