arch/x86/kvm/vmx/hyperv_evmcs.c

Source file repositories/reference/linux-study-clean/arch/x86/kvm/vmx/hyperv_evmcs.c

File Facts

System: Linux kernel
Corpus path: arch/x86/kvm/vmx/hyperv_evmcs.c
Extension: .c
Size: 14716 bytes
Lines: 316
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

hyperv_evmcs.h

Detected Declarations

No top-level syscall, struct, function, initcall, or export declaration detected by the generator.

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0
/*
 * This file contains common code for working with Enlightened VMCS which is
 * used both by Hyper-V on KVM and KVM on Hyper-V.
 */

#include "hyperv_evmcs.h"

#define EVMCS1_OFFSET(x) offsetof(struct hv_enlightened_vmcs, x)
#define EVMCS1_FIELD(number, name, clean_field)[ENC_TO_VMCS12_IDX(number)] = \
		{EVMCS1_OFFSET(name), clean_field}

const struct evmcs_field vmcs_field_to_evmcs_1[] = {
	/* 64 bit rw */
	EVMCS1_FIELD(GUEST_RIP, guest_rip,
		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_NONE),
	EVMCS1_FIELD(GUEST_RSP, guest_rsp,
		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_BASIC),
	EVMCS1_FIELD(GUEST_RFLAGS, guest_rflags,
		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_BASIC),
	EVMCS1_FIELD(HOST_IA32_PAT, host_ia32_pat,
		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1),
	EVMCS1_FIELD(HOST_IA32_EFER, host_ia32_efer,
		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1),
	EVMCS1_FIELD(HOST_IA32_PERF_GLOBAL_CTRL, host_ia32_perf_global_ctrl,
		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1),
	EVMCS1_FIELD(HOST_CR0, host_cr0,
		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1),
	EVMCS1_FIELD(HOST_CR3, host_cr3,
		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1),
	EVMCS1_FIELD(HOST_CR4, host_cr4,
		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1),
	EVMCS1_FIELD(HOST_IA32_SYSENTER_ESP, host_ia32_sysenter_esp,
		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1),
	EVMCS1_FIELD(HOST_IA32_SYSENTER_EIP, host_ia32_sysenter_eip,
		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1),
	EVMCS1_FIELD(HOST_RIP, host_rip,
		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1),
	EVMCS1_FIELD(IO_BITMAP_A, io_bitmap_a,
		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_IO_BITMAP),
	EVMCS1_FIELD(IO_BITMAP_B, io_bitmap_b,
		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_IO_BITMAP),
	EVMCS1_FIELD(MSR_BITMAP, msr_bitmap,
		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_MSR_BITMAP),
	EVMCS1_FIELD(GUEST_ES_BASE, guest_es_base,
		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
	EVMCS1_FIELD(GUEST_CS_BASE, guest_cs_base,
		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
	EVMCS1_FIELD(GUEST_SS_BASE, guest_ss_base,
		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
	EVMCS1_FIELD(GUEST_DS_BASE, guest_ds_base,
		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
	EVMCS1_FIELD(GUEST_FS_BASE, guest_fs_base,
		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
	EVMCS1_FIELD(GUEST_GS_BASE, guest_gs_base,
		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
	EVMCS1_FIELD(GUEST_LDTR_BASE, guest_ldtr_base,
		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
	EVMCS1_FIELD(GUEST_TR_BASE, guest_tr_base,
		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
	EVMCS1_FIELD(GUEST_GDTR_BASE, guest_gdtr_base,
		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
	EVMCS1_FIELD(GUEST_IDTR_BASE, guest_idtr_base,
		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
	EVMCS1_FIELD(TSC_OFFSET, tsc_offset,
		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_GRP2),
	EVMCS1_FIELD(VIRTUAL_APIC_PAGE_ADDR, virtual_apic_page_addr,
		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_GRP2),
	EVMCS1_FIELD(VMCS_LINK_POINTER, vmcs_link_pointer,
		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP1),
	EVMCS1_FIELD(GUEST_IA32_DEBUGCTL, guest_ia32_debugctl,
		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP1),
	EVMCS1_FIELD(GUEST_IA32_PAT, guest_ia32_pat,
		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP1),
	EVMCS1_FIELD(GUEST_IA32_EFER, guest_ia32_efer,
		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP1),
	EVMCS1_FIELD(GUEST_IA32_PERF_GLOBAL_CTRL, guest_ia32_perf_global_ctrl,
		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP1),
	EVMCS1_FIELD(GUEST_PDPTR0, guest_pdptr0,
		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP1),
	EVMCS1_FIELD(GUEST_PDPTR1, guest_pdptr1,
		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP1),
	EVMCS1_FIELD(GUEST_PDPTR2, guest_pdptr2,
		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP1),
	EVMCS1_FIELD(GUEST_PDPTR3, guest_pdptr3,
		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP1),
	EVMCS1_FIELD(GUEST_PENDING_DBG_EXCEPTIONS, guest_pending_dbg_exceptions,
		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP1),
	EVMCS1_FIELD(GUEST_SYSENTER_ESP, guest_sysenter_esp,
		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP1),

Annotation

Immediate include surface: `hyperv_evmcs.h`.
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.