arch/x86/xen/grant-table.c
Source file repositories/reference/linux-study-clean/arch/x86/xen/grant-table.c
File Facts
- System
- Linux kernel
- Corpus path
arch/x86/xen/grant-table.c- Extension
.c- Size
- 3998 bytes
- Lines
- 170
- 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.
- 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/sched.hlinux/mm.hlinux/slab.hlinux/vmalloc.hxen/interface/xen.hxen/page.hxen/grant_table.hxen/xen.hxen/events.hxen/xen-ops.h
Detected Declarations
function arch_gnttab_map_sharedfunction arch_gnttab_map_statusfunction arch_gnttab_unmapfunction gnttab_applyfunction arch_gnttab_vallocfunction arch_gnttab_vfreefunction arch_gnttab_initfunction xen_pvh_gnttab_setupmodule init xen_pvh_gnttab_setup
Annotated Snippet
core_initcall(xen_pvh_gnttab_setup);
#endifAnnotation
- Immediate include surface: `linux/sched.h`, `linux/mm.h`, `linux/slab.h`, `linux/vmalloc.h`, `xen/interface/xen.h`, `xen/page.h`, `xen/grant_table.h`, `xen/xen.h`.
- Detected declarations: `function arch_gnttab_map_shared`, `function arch_gnttab_map_status`, `function arch_gnttab_unmap`, `function gnttab_apply`, `function arch_gnttab_valloc`, `function arch_gnttab_vfree`, `function arch_gnttab_init`, `function xen_pvh_gnttab_setup`, `module init xen_pvh_gnttab_setup`.
- 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.