diff options
Diffstat (limited to 'arch/riscv/mm/pageattr.c')
-rw-r--r-- | arch/riscv/mm/pageattr.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/arch/riscv/mm/pageattr.c b/arch/riscv/mm/pageattr.c index fcd59ef2835b..7be6cd67e2ef 100644 --- a/arch/riscv/mm/pageattr.c +++ b/arch/riscv/mm/pageattr.c @@ -148,3 +148,27 @@ int set_memory_nx(unsigned long addr, int numpages) { return __set_memory(addr, numpages, __pgprot(0), __pgprot(_PAGE_EXEC)); } + +int set_direct_map_invalid_noflush(struct page *page) +{ + unsigned long start = (unsigned long)page_address(page); + unsigned long end = start + PAGE_SIZE; + struct pageattr_masks masks = { + .set_mask = __pgprot(0), + .clear_mask = __pgprot(_PAGE_PRESENT) + }; + + return walk_page_range(&init_mm, start, end, &pageattr_ops, &masks); +} + +int set_direct_map_default_noflush(struct page *page) +{ + unsigned long start = (unsigned long)page_address(page); + unsigned long end = start + PAGE_SIZE; + struct pageattr_masks masks = { + .set_mask = PAGE_KERNEL, + .clear_mask = __pgprot(0) + }; + + return walk_page_range(&init_mm, start, end, &pageattr_ops, &masks); +} |