arch/x86/xen/xen-ops.h

File Facts

System

Linux kernel

Corpus path

arch/x86/xen/xen-ops.h

Extension

.h

Size

8779 bytes

Lines

324

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.
• Touches IRQ or DMA behavior; this matters for the representative real-device path.
• 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/init.h
• linux/clocksource.h
• linux/irqreturn.h
• linux/linkage.h
• xen/interface/xenpmu.h
• xen/xen-ops.h
• asm/page.h
• trace/events/xen.h

Detected Declarations

• struct trap_info
• struct multicall_space
• struct dom0_vga_console_info
• struct xen_common_irq
• function xen_mc_issue
• function xen_mc_entry
• function xen_mc_issue
• function xen_pv_pre_suspend
• function xen_smp_init
• function xen_init_spinlocks
• function xen_init_vga
• function xen_efi_init
• function xen_hvm_post_suspend
• function xen_pmu_init
• function xen_smp_intr_init
• function xen_smp_intr_free
• function xen_smp_intr_free_pv

Annotated Snippet

struct xen_common_irq {
	int irq;
	char *name;
};
#else /* CONFIG_SMP */

static inline int xen_smp_intr_init(unsigned int cpu)
{
	return 0;
}
static inline void xen_smp_intr_free(unsigned int cpu) {}

static inline int xen_smp_intr_init_pv(unsigned int cpu)
{
	return 0;
}
static inline void xen_smp_intr_free_pv(unsigned int cpu) {}
static inline void xen_smp_count_cpus(void) { }
#endif /* CONFIG_SMP */

void xen_hypercall_hvm(void);
void xen_hypercall_amd(void);
void xen_hypercall_intel(void);
void xen_hypercall_setfunc(void);
void *__xen_hypercall_setfunc(void);

#endif /* XEN_OPS_H */

Annotation

• Immediate include surface: `linux/init.h`, `linux/clocksource.h`, `linux/irqreturn.h`, `linux/linkage.h`, `xen/interface/xenpmu.h`, `xen/xen-ops.h`, `asm/page.h`, `trace/events/xen.h`.
• Detected declarations: `struct trap_info`, `struct multicall_space`, `struct dom0_vga_console_info`, `struct xen_common_irq`, `function xen_mc_issue`, `function xen_mc_entry`, `function xen_mc_issue`, `function xen_pv_pre_suspend`, `function xen_smp_init`, `function xen_init_spinlocks`.
• Atlas domain: Architecture Layer / arch/x86.
• Implementation status: source implementation candidate.
• IRQ or DMA behavior appears here, which is relevant to the selected PCIe/NVMe device path.

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.