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Edit File: kfence.h

/* SPDX-License-Identifier: GPL-2.0 */ /* * powerpc KFENCE support. * * Copyright (C) 2020 CS GROUP France */ #ifndef __ASM_POWERPC_KFENCE_H #define __ASM_POWERPC_KFENCE_H #include <linux/mm.h> #include <asm/pgtable.h> static inline bool arch_kfence_init_pool(void) { return true; } static inline bool kfence_protect_page(unsigned long addr, bool protect) { pte_t *kpte = virt_to_kpte(addr); if (protect) { pte_update(&init_mm, addr, kpte, _PAGE_PRESENT, 0, 0); flush_tlb_kernel_range(addr, addr + PAGE_SIZE); } else { pte_update(&init_mm, addr, kpte, 0, _PAGE_PRESENT, 0); } return true; } #endif /* __ASM_POWERPC_KFENCE_H */