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-rw-r--r--arch/x86/um/tls_64.c17
1 files changed, 17 insertions, 0 deletions
diff --git a/arch/x86/um/tls_64.c b/arch/x86/um/tls_64.c
new file mode 100644
index 000000000000..f7ba46200ecd
--- /dev/null
+++ b/arch/x86/um/tls_64.c
@@ -0,0 +1,17 @@
1#include "linux/sched.h"
2
3void clear_flushed_tls(struct task_struct *task)
4{
5}
6
7int arch_copy_tls(struct task_struct *t)
8{
9 /*
10 * If CLONE_SETTLS is set, we need to save the thread id
11 * (which is argument 5, child_tid, of clone) so it can be set
12 * during context switches.
13 */
14 t->thread.arch.fs = t->thread.regs.regs.gp[R8 / sizeof(long)];
15
16 return 0;
17}