arch/x86/kvm/kvm-asm-offsets.c

Source file repositories/reference/linux-study-clean/arch/x86/kvm/kvm-asm-offsets.c

File Facts

System
Linux kernel
Corpus path
arch/x86/kvm/kvm-asm-offsets.c
Extension
.c
Size
834 bytes
Lines
31
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.

Dependency Surface

Detected Declarations

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0
/*
 * Generate definitions needed by assembly language modules.
 * This code generates raw asm output which is post-processed to extract
 * and format the required data.
 */
#define COMPILE_OFFSETS

#include <linux/kbuild.h>
#include "vmx/vmx.h"
#include "svm/svm.h"

static void __used common(void)
{
	if (IS_ENABLED(CONFIG_KVM_AMD)) {
		BLANK();
		OFFSET(SVM_vcpu_arch_regs, vcpu_svm, vcpu.arch.regs);
		OFFSET(SVM_current_vmcb, vcpu_svm, current_vmcb);
		OFFSET(SVM_spec_ctrl, vcpu_svm, spec_ctrl);
		OFFSET(SVM_vmcb01, vcpu_svm, vmcb01);
		OFFSET(KVM_VMCB_pa, kvm_vmcb_info, pa);
		OFFSET(SD_save_area_pa, svm_cpu_data, save_area_pa);
	}

	if (IS_ENABLED(CONFIG_KVM_INTEL)) {
		BLANK();
		OFFSET(VMX_vcpu_arch_regs, vcpu_vmx, vcpu.arch.regs);
		OFFSET(VMX_spec_ctrl, vcpu_vmx, spec_ctrl);
	}
}

Annotation

Implementation Notes