https://github.com/torvalds/linux
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Tip revision: 07d9a380680d1c0eb51ef87ff2eab5c994949e69 authored by Linus Torvalds on 24 October 2016, 00:10:14 UTC
Linux 4.9-rc2
Tip revision: 07d9a38
tls_64.c
#include <linux/sched.h>
#include <asm/ptrace-abi.h>

void clear_flushed_tls(struct task_struct *task)
{
}

int arch_copy_tls(struct task_struct *t)
{
	/*
	 * If CLONE_SETTLS is set, we need to save the thread id
	 * (which is argument 5, child_tid, of clone) so it can be set
	 * during context switches.
	 */
	t->thread.arch.fs = t->thread.regs.regs.gp[R8 / sizeof(long)];

	return 0;
}
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