arch/x86/platform/uv/bios_uv.c

File Facts

System

Linux kernel

Corpus path

arch/x86/platform/uv/bios_uv.c

Extension

.c

Size

6752 bytes

Lines

270

Domain

Architecture Layer

Bucket

arch/x86

Inferred role

Architecture Layer: exported/initcall integration point

Status

integration 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.
• Exports symbols or registers init work; inspect boot/module ordering and who consumes the exported contract.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/efi.h
• linux/export.h
• linux/slab.h
• asm/efi.h
• linux/io.h
• asm/pgalloc.h
• asm/uv/bios.h
• asm/uv/uv_hub.h

Detected Declarations

• function __uv_bios_call
• function uv_bios_call
• function uv_bios_call_irqsave
• function uv_bios_get_sn_info
• function uv_bios_mq_watchlist_alloc
• function uv_bios_mq_watchlist_free
• function uv_bios_change_memprotect
• function uv_bios_reserved_page_pa
• function uv_bios_freq_base
• function uv_bios_set_legacy_vga_target
• function uv_bios_get_master_nasid
• function uv_bios_get_heapsize
• function uv_bios_install_heap
• function uv_bios_obj_count
• function uv_bios_enum_objs
• function uv_bios_enum_ports
• function uv_bios_get_geoinfo
• function uv_bios_get_pci_topology
• function get_uv_systab_phys
• function uv_bios_init
• export sn_partition_id
• export sn_coherency_id
• export sn_region_size
• export uv_bios_mq_watchlist_alloc
• export uv_bios_mq_watchlist_free
• export uv_bios_change_memprotect
• export uv_bios_reserved_page_pa
• export uv_bios_get_master_nasid
• export uv_bios_get_heapsize
• export uv_bios_install_heap
• export uv_bios_obj_count
• export uv_bios_enum_objs
• export uv_bios_enum_ports
• export uv_bios_get_geoinfo
• export uv_bios_get_pci_topology

Annotated Snippet

if (!uv_systab) {
			pr_err("UV: UVsystab: ioremap(%d) failed!\n", size);
			return -EFAULT;
		}
	}
	pr_info("UV: UVsystab: Revision:%x\n", uv_systab->revision);
	return 0;
}

Annotation

• Immediate include surface: `linux/efi.h`, `linux/export.h`, `linux/slab.h`, `asm/efi.h`, `linux/io.h`, `asm/pgalloc.h`, `asm/uv/bios.h`, `asm/uv/uv_hub.h`.
• Detected declarations: `function __uv_bios_call`, `function uv_bios_call`, `function uv_bios_call_irqsave`, `function uv_bios_get_sn_info`, `function uv_bios_mq_watchlist_alloc`, `function uv_bios_mq_watchlist_free`, `function uv_bios_change_memprotect`, `function uv_bios_reserved_page_pa`, `function uv_bios_freq_base`, `function uv_bios_set_legacy_vga_target`.
• Atlas domain: Architecture Layer / arch/x86.
• Implementation status: integration 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.