arch/powerpc/include/asm/mmu.h

File Facts

System

Linux kernel

Corpus path

arch/powerpc/include/asm/mmu.h

Extension

.h

Size

10892 bytes

Lines

403

Domain

Architecture Layer

Bucket

arch/powerpc

Inferred role

Architecture Layer: implementation source

Status

source implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

• CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/types.h
• asm/asm-const.h
• linux/bug.h
• asm/cputable.h
• asm/page.h
• linux/jump_label.h
• asm/book3s/64/mmu.h
• asm/book3s/32/mmu-hash.h
• asm/nohash/mmu.h

Detected Declarations

• struct mm_struct
• function early_mmu_has_feature
• function mmu_has_feature
• function mmu_clear_feature
• function mmu_feature_keys_init
• function mmu_clear_feature
• function assert_pte_locked
• function early_radix_enabled
• function strict_kernel_rwx_enabled
• function strict_module_rwx_enabled
• function mmu_early_init_devtree

Annotated Snippet

static inline void mmu_early_init_devtree(void) { }

static inline void pkey_early_init_devtree(void) {}

extern void *abatron_pteptrs[2];
#endif /* __ASSEMBLER__ */
#endif

#if defined(CONFIG_PPC_BOOK3S_32)
/* 32-bit classic hash table MMU */
#include <asm/book3s/32/mmu-hash.h>
#elif defined(CONFIG_PPC_MMU_NOHASH)
#include <asm/nohash/mmu.h>
#endif

#endif /* __KERNEL__ */
#endif /* _ASM_POWERPC_MMU_H_ */

Annotation

• Immediate include surface: `linux/types.h`, `asm/asm-const.h`, `linux/bug.h`, `asm/cputable.h`, `asm/page.h`, `linux/jump_label.h`, `asm/book3s/64/mmu.h`, `asm/book3s/32/mmu-hash.h`.
• Detected declarations: `struct mm_struct`, `function early_mmu_has_feature`, `function mmu_has_feature`, `function mmu_clear_feature`, `function mmu_feature_keys_init`, `function mmu_clear_feature`, `function assert_pte_locked`, `function early_radix_enabled`, `function strict_kernel_rwx_enabled`, `function strict_module_rwx_enabled`.
• Atlas domain: Architecture Layer / arch/powerpc.
• Implementation status: source implementation candidate.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.