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author | Ingo Molnar <mingo@kernel.org> | 2018-11-03 23:42:16 +0100 |
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committer | Ingo Molnar <mingo@kernel.org> | 2018-11-03 23:42:16 +0100 |
commit | 23a12ddee1ce28065b71f14ccc695b5a0c8a64ff (patch) | |
tree | cedaa1cde5b2557116e523c31552187804704093 /arch/csky/abiv2/inc/abi/cacheflush.h | |
parent | compat: Cleanup in_compat_syscall() callers (diff) | |
parent | objtool: Support GCC 9 cold subfunction naming scheme (diff) | |
download | linux-dev-23a12ddee1ce28065b71f14ccc695b5a0c8a64ff.tar.xz linux-dev-23a12ddee1ce28065b71f14ccc695b5a0c8a64ff.zip |
Merge branch 'core/urgent' into x86/urgent, to pick up objtool fix
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/csky/abiv2/inc/abi/cacheflush.h')
-rw-r--r-- | arch/csky/abiv2/inc/abi/cacheflush.h | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/arch/csky/abiv2/inc/abi/cacheflush.h b/arch/csky/abiv2/inc/abi/cacheflush.h new file mode 100644 index 000000000000..b8db5e0b2fe3 --- /dev/null +++ b/arch/csky/abiv2/inc/abi/cacheflush.h @@ -0,0 +1,46 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#ifndef __ABI_CSKY_CACHEFLUSH_H +#define __ABI_CSKY_CACHEFLUSH_H + +/* Keep includes the same across arches. */ +#include <linux/mm.h> + +/* + * The cache doesn't need to be flushed when TLB entries change when + * the cache is mapped to physical memory, not virtual memory + */ +#define flush_cache_all() do { } while (0) +#define flush_cache_mm(mm) do { } while (0) +#define flush_cache_dup_mm(mm) do { } while (0) + +#define flush_cache_range(vma, start, end) \ + do { \ + if (vma->vm_flags & VM_EXEC) \ + icache_inv_all(); \ + } while (0) + +#define flush_cache_page(vma, vmaddr, pfn) do { } while (0) +#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0 +#define flush_dcache_page(page) do { } while (0) +#define flush_dcache_mmap_lock(mapping) do { } while (0) +#define flush_dcache_mmap_unlock(mapping) do { } while (0) + +#define flush_icache_range(start, end) cache_wbinv_range(start, end) + +void flush_icache_page(struct vm_area_struct *vma, struct page *page); +void flush_icache_user_range(struct vm_area_struct *vma, struct page *page, + unsigned long vaddr, int len); + +#define flush_cache_vmap(start, end) do { } while (0) +#define flush_cache_vunmap(start, end) do { } while (0) + +#define copy_to_user_page(vma, page, vaddr, dst, src, len) \ +do { \ + memcpy(dst, src, len); \ + cache_wbinv_range((unsigned long)dst, (unsigned long)dst + len); \ +} while (0) +#define copy_from_user_page(vma, page, vaddr, dst, src, len) \ + memcpy(dst, src, len) + +#endif /* __ABI_CSKY_CACHEFLUSH_H */ |