arch/x86/include/asm/mshyperv.h

File Facts

System

Linux kernel

Corpus path

arch/x86/include/asm/mshyperv.h

Extension

.h

Size

9355 bytes

Lines

319

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/types.h
• linux/nmi.h
• linux/msi.h
• linux/io.h
• linux/static_call.h
• asm/nospec-branch.h
• asm/msr.h
• hyperv/hvhdk.h
• asm/fpu/types.h
• asm-generic/mshyperv.h

Detected Declarations

• struct mshv_vtl_cpu_context
• function hv_get_nmi_reason
• function hv_do_hypercall
• function _hv_do_fast_hypercall8
• function hv_do_fast_hypercall8
• function _hv_do_fast_hypercall16
• function hv_do_fast_hypercall16
• function hv_apic_init
• function hv_ghcb_negotiate_protocol
• function hv_ghcb_terminate
• function hv_vtom_init
• function hv_is_sint_msr
• function hv_raw_get_msr
• function hv_root_crash_init
• function hyperv_flush_guest_mapping
• function hyperv_flush_guest_mapping_range
• function hv_set_msr
• function hv_set_non_nested_msr
• function hv_apicid_to_vp_index
• function hv_vtl_init_platform
• function mshv_vtl_return_call

Annotated Snippet

struct mshv_vtl_cpu_context {
	union {
		struct {
			u64 rax;
			u64 rcx;
			u64 rdx;
			u64 rbx;
			u64 cr2;
			u64 rbp;
			u64 rsi;
			u64 rdi;
			u64 r8;
			u64 r9;
			u64 r10;
			u64 r11;
			u64 r12;
			u64 r13;
			u64 r14;
			u64 r15;
		};
		u64 gp_regs[16];
	};

	struct fxregs_state fx_state;
};

#ifdef CONFIG_HYPERV_VTL_MODE
void __init hv_vtl_init_platform(void);
int __init hv_vtl_early_init(void);
void mshv_vtl_return_call(struct mshv_vtl_cpu_context *vtl0);
void mshv_vtl_return_call_init(u64 vtl_return_offset);
void mshv_vtl_return_hypercall(void);
void __mshv_vtl_return_call(struct mshv_vtl_cpu_context *vtl0);
#else
static inline void __init hv_vtl_init_platform(void) {}
static inline int __init hv_vtl_early_init(void) { return 0; }
static inline void mshv_vtl_return_call(struct mshv_vtl_cpu_context *vtl0) {}
static inline void mshv_vtl_return_call_init(u64 vtl_return_offset) {}
static inline void mshv_vtl_return_hypercall(void) {}
static inline void __mshv_vtl_return_call(struct mshv_vtl_cpu_context *vtl0) {}
#endif

#include <asm-generic/mshyperv.h>

#endif

Annotation

• Immediate include surface: `linux/types.h`, `linux/nmi.h`, `linux/msi.h`, `linux/io.h`, `linux/static_call.h`, `asm/nospec-branch.h`, `asm/msr.h`, `hyperv/hvhdk.h`.
• Detected declarations: `struct mshv_vtl_cpu_context`, `function hv_get_nmi_reason`, `function hv_do_hypercall`, `function _hv_do_fast_hypercall8`, `function hv_do_fast_hypercall8`, `function _hv_do_fast_hypercall16`, `function hv_do_fast_hypercall16`, `function hv_apic_init`, `function hv_ghcb_negotiate_protocol`, `function hv_ghcb_terminate`.
• 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.