| /* SPDX-License-Identifier: GPL-2.0 */ | |
| #ifndef _ASM_S390_KFENCE_H | |
| #define _ASM_S390_KFENCE_H | |
| #include <linux/mm.h> | |
| #include <linux/kfence.h> | |
| #include <asm/set_memory.h> | |
| #include <asm/page.h> | |
| void __kernel_map_pages(struct page *page, int numpages, int enable); | |
| static __always_inline bool arch_kfence_init_pool(void) | |
| { | |
| #ifdef CONFIG_KFENCE | |
| unsigned long pool_pages = KFENCE_POOL_SIZE >> PAGE_SHIFT; | |
| set_memory_4k((unsigned long)__kfence_pool, pool_pages); | |
| #endif | |
| return true; | |
| } | |
| #define arch_kfence_test_address(addr) ((addr) & PAGE_MASK) | |
| static inline bool kfence_protect_page(unsigned long addr, bool protect) | |
| { | |
| __kernel_map_pages(virt_to_page((void *)addr), 1, !protect); | |
| return true; | |
| } | |
| #endif /* _ASM_S390_KFENCE_H */ |