diff options
Diffstat (limited to 'arch/powerpc/include/asm/kfence.h')
| -rw-r--r-- | arch/powerpc/include/asm/kfence.h | 30 |
1 files changed, 29 insertions, 1 deletions
diff --git a/arch/powerpc/include/asm/kfence.h b/arch/powerpc/include/asm/kfence.h index a9846b68c6b9..1f7cab58ab2c 100644 --- a/arch/powerpc/include/asm/kfence.h +++ b/arch/powerpc/include/asm/kfence.h @@ -11,11 +11,38 @@ #include <linux/mm.h> #include <asm/pgtable.h> +#ifdef CONFIG_PPC64_ELF_ABI_V1 +#define ARCH_FUNC_PREFIX "." +#endif + +extern bool kfence_early_init; +extern bool kfence_disabled; + +static inline void disable_kfence(void) +{ + kfence_disabled = true; +} + static inline bool arch_kfence_init_pool(void) { - return true; + return !kfence_disabled; } +static inline bool kfence_early_init_enabled(void) +{ + return IS_ENABLED(CONFIG_KFENCE) && kfence_early_init; +} + +#ifdef CONFIG_PPC64 +static inline bool kfence_protect_page(unsigned long addr, bool protect) +{ + struct page *page = virt_to_page((void *)addr); + + __kernel_map_pages(page, 1, !protect); + + return true; +} +#else static inline bool kfence_protect_page(unsigned long addr, bool protect) { pte_t *kpte = virt_to_kpte(addr); @@ -29,5 +56,6 @@ static inline bool kfence_protect_page(unsigned long addr, bool protect) return true; } +#endif #endif /* __ASM_POWERPC_KFENCE_H */ |