arch/x86/include/asm/amd/node.h

File Facts

System

Linux kernel

Corpus path

arch/x86/include/asm/amd/node.h

Extension

.h

Size

1582 bytes

Lines

60

Domain

Architecture Layer

Bucket

arch/x86

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/pci.h

Detected Declarations

• function amd_num_nodes
• function amd_smn_read
• function amd_smn_write
• function amd_smn_hsmp_rdwr
• function smn_read_register

Annotated Snippet

static inline int __must_check amd_smn_read(u16 node, u32 address, u32 *value) { return -ENODEV; }
static inline int __must_check amd_smn_write(u16 node, u32 address, u32 value) { return -ENODEV; }

static inline int __must_check amd_smn_hsmp_rdwr(u16 node, u32 address, u32 *value, bool write)
{
	return -ENODEV;
}
#endif /* CONFIG_AMD_NODE */

/* helper for use with read_poll_timeout */
static inline int smn_read_register(u32 reg)
{
	int data, rc;

	rc = amd_smn_read(0, reg, &data);
	if (rc)
		return rc;

	return data;
}
#endif /*_ASM_X86_AMD_NODE_H_*/

Annotation

• Immediate include surface: `linux/pci.h`.
• Detected declarations: `function amd_num_nodes`, `function amd_smn_read`, `function amd_smn_write`, `function amd_smn_hsmp_rdwr`, `function smn_read_register`.
• Atlas domain: Architecture Layer / arch/x86.
• 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.