diff options
Diffstat (limited to 'arch/powerpc/mm/pageattr.c')
| -rw-r--r-- | arch/powerpc/mm/pageattr.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/arch/powerpc/mm/pageattr.c b/arch/powerpc/mm/pageattr.c index 421db7c4f2a4..8a9d24218b74 100644 --- a/arch/powerpc/mm/pageattr.c +++ b/arch/powerpc/mm/pageattr.c @@ -14,6 +14,7 @@ #include <asm/page.h> #include <asm/pgtable.h> +#include <mm/mmu_decl.h> static pte_basic_t pte_update_delta(pte_t *ptep, unsigned long addr, unsigned long old, unsigned long new) @@ -101,3 +102,22 @@ int change_memory_attr(unsigned long addr, int numpages, long action) return apply_to_existing_page_range(&init_mm, start, size, change_page_attr, (void *)action); } + +#if defined(CONFIG_DEBUG_PAGEALLOC) || defined(CONFIG_KFENCE) +#ifdef CONFIG_ARCH_SUPPORTS_DEBUG_PAGEALLOC +void __kernel_map_pages(struct page *page, int numpages, int enable) +{ + unsigned long addr = (unsigned long)page_address(page); + + if (PageHighMem(page)) + return; + + if (IS_ENABLED(CONFIG_PPC_BOOK3S_64) && !radix_enabled()) + hash__kernel_map_pages(page, numpages, enable); + else if (enable) + set_memory_p(addr, numpages); + else + set_memory_np(addr, numpages); +} +#endif +#endif |