drivers/firmware/efi/libstub/alignedmem.c

File Facts

System

Linux kernel

Corpus path

drivers/firmware/efi/libstub/alignedmem.c

Extension

.c

Size

1732 bytes

Lines

62

Domain

Driver Families

Bucket

drivers/firmware

Inferred role

Driver Families: implementation source

Status

source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

• Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

• linux/efi.h
• asm/efi.h
• efistub.h

Detected Declarations

• function efi_allocate_pages_aligned

Annotated Snippet

if (l) {
			efi_bs_call(free_pages, alloc_addr, slack - l + 1);
			slack = l - 1;
		}
		if (slack)
			efi_bs_call(free_pages, *addr + size, slack);
	}
	return EFI_SUCCESS;
}

Annotation

• Immediate include surface: `linux/efi.h`, `asm/efi.h`, `efistub.h`.
• Detected declarations: `function efi_allocate_pages_aligned`.
• Atlas domain: Driver Families / drivers/firmware.
• 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.