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-rw-r--r--arch/arm64/include/asm/mmu.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/mmu.h b/arch/arm64/include/asm/mmu.h
index 49f1a810df16..78a4dbf75e60 100644
--- a/arch/arm64/include/asm/mmu.h
+++ b/arch/arm64/include/asm/mmu.h
@@ -78,6 +78,8 @@ extern void create_pgd_mapping(struct mm_struct *mm, phys_addr_t phys,
pgprot_t prot, bool page_mappings_only);
extern void *fixmap_remap_fdt(phys_addr_t dt_phys, int *size, pgprot_t prot);
extern void mark_linear_text_alias_ro(void);
+extern int split_kernel_leaf_mapping(unsigned long start, unsigned long end);
+extern void linear_map_maybe_split_to_ptes(void);
/*
* This check is triggered during the early boot before the cpufeature
@@ -104,5 +106,11 @@ static inline bool kaslr_requires_kpti(void)
return true;
}
+#ifdef CONFIG_UNMAP_KERNEL_AT_EL0
+void kpti_install_ng_mappings(void);
+#else
+static inline void kpti_install_ng_mappings(void) {}
+#endif
+
#endif /* !__ASSEMBLY__ */
#endif