arch/x86/um/tls_64.c

Source file repositories/reference/linux-study-clean/arch/x86/um/tls_64.c

File Facts

System
Linux kernel
Corpus path
arch/x86/um/tls_64.c
Extension
.c
Size
396 bytes
Lines
19
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
#include <linux/sched.h>
#include <asm/ptrace-abi.h>

void clear_flushed_tls(struct task_struct *task)
{
}

int arch_set_tls(struct task_struct *t, unsigned long tls)
{
	/*
	 * If CLONE_SETTLS is set, we need to save the thread id
	 * so it can be set during context switches.
	 */
	t->thread.regs.regs.gp[FS_BASE / sizeof(unsigned long)] = tls;

	return 0;
}

Annotation

Implementation Notes