arch/powerpc/purgatory/Makefile

File Facts

System

Linux kernel

Corpus path

arch/powerpc/purgatory/Makefile

Extension

[no extension]

Size

557 bytes

Lines

18

Domain

Architecture Layer

Bucket

arch/powerpc

Inferred role

Architecture Layer: build/configuration rule

Status

atlas-only

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.

Dependency Surface

• No C-style include directives detected by the generator.

Detected Declarations

• No top-level syscall, struct, function, initcall, or export declaration detected by the generator.

Annotated Snippet

# SPDX-License-Identifier: GPL-2.0

targets += trampoline_$(BITS).o purgatory.ro

# When profile-guided optimization is enabled, llvm emits two different
# overlapping text sections, which is not supported by kexec. Remove profile
# optimization flags.
KBUILD_CFLAGS := $(filter-out -fprofile-sample-use=% -fprofile-use=%,$(KBUILD_CFLAGS))

LDFLAGS_purgatory.ro := -e purgatory_start -r --no-undefined

$(obj)/purgatory.ro: $(obj)/trampoline_$(BITS).o FORCE
		$(call if_changed,ld)

$(obj)/kexec-purgatory.o: $(obj)/purgatory.ro

obj-y	+= kexec-purgatory.o

Annotation

• Atlas domain: Architecture Layer / arch/powerpc.
• Implementation status: atlas-only.

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.