arch/x86/hyperv/hv_apic.c

File Facts

System

Linux kernel

Corpus path

arch/x86/hyperv/hv_apic.c

Extension

.c

Size

8872 bytes

Lines

342

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.
• Allocates kernel memory; connect allocation flags and lifetime to context constraints.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/types.h
• linux/vmalloc.h
• linux/mm.h
• linux/clockchips.h
• linux/slab.h
• linux/cpuhotplug.h
• asm/hypervisor.h
• asm/mshyperv.h
• asm/apic.h
• asm/msr.h
• asm/trace/hyperv.h

Detected Declarations

• function hv_apic_icr_read
• function hv_apic_icr_write
• function hv_enable_coco_interrupt
• function hv_apic_read
• function hv_apic_write
• function hv_apic_eoi_write
• function cpu_is_self
• function __send_ipi_mask_ex
• function __send_ipi_mask
• function for_each_cpu
• function __send_ipi_one
• function hv_send_ipi
• function hv_send_ipi_mask
• function hv_send_ipi_mask_allbutself
• function hv_send_ipi_allbutself
• function hv_send_ipi_all
• function hv_send_ipi_self
• function hv_apic_init

Annotated Snippet

if (!x2apic_enabled()) {
			apic_update_callback(read, hv_apic_read);
			apic_update_callback(write, hv_apic_write);
			apic_update_callback(icr_write, hv_apic_icr_write);
			apic_update_callback(icr_read, hv_apic_icr_read);
		}
	}
}

Annotation

• Immediate include surface: `linux/types.h`, `linux/vmalloc.h`, `linux/mm.h`, `linux/clockchips.h`, `linux/slab.h`, `linux/cpuhotplug.h`, `asm/hypervisor.h`, `asm/mshyperv.h`.
• Detected declarations: `function hv_apic_icr_read`, `function hv_apic_icr_write`, `function hv_enable_coco_interrupt`, `function hv_apic_read`, `function hv_apic_write`, `function hv_apic_eoi_write`, `function cpu_is_self`, `function __send_ipi_mask_ex`, `function __send_ipi_mask`, `function for_each_cpu`.
• 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.