arch/x86/kernel/vmcore_info_64.c

Source file repositories/reference/linux-study-clean/arch/x86/kernel/vmcore_info_64.c

File Facts

System
Linux kernel
Corpus path
arch/x86/kernel/vmcore_info_64.c
Extension
.c
Size
586 bytes
Lines
25
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-only

#include <linux/vmcore_info.h>
#include <linux/pgtable.h>

#include <asm/setup.h>

void arch_crash_save_vmcoreinfo(void)
{
	u64 sme_mask = sme_me_mask;

	VMCOREINFO_NUMBER(phys_base);
	VMCOREINFO_SYMBOL(init_top_pgt);
	vmcoreinfo_append_str("NUMBER(pgtable_l5_enabled)=%d\n",
			      pgtable_l5_enabled());

#ifdef CONFIG_NUMA
	VMCOREINFO_SYMBOL(node_data);
	VMCOREINFO_LENGTH(node_data, MAX_NUMNODES);
#endif
	vmcoreinfo_append_str("KERNELOFFSET=%lx\n", kaslr_offset());
	VMCOREINFO_NUMBER(KERNEL_IMAGE_SIZE);
	VMCOREINFO_NUMBER(sme_mask);
}

Annotation

Implementation Notes