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| author | Jiri Kosina <jkosina@suse.cz> | 2014-11-20 14:42:02 +0100 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2014-11-20 14:42:02 +0100 |
| commit | a02001086bbfb4da35d1228bebc2f1b442db455f (patch) | |
| tree | 62ab47936cef06fd08657ca5b6cd1df98c19be57 /arch/arm64/kernel/sys_compat.c | |
| parent | eff264efeeb0898408e8c9df72d8a32621035bed (diff) | |
| parent | fc14f9c1272f62c3e8d01300f52467c0d9af50f9 (diff) | |
Merge Linus' tree to be be to apply submitted patches to newer code than
current trivial.git base
Diffstat (limited to 'arch/arm64/kernel/sys_compat.c')
| -rw-r--r-- | arch/arm64/kernel/sys_compat.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/arm64/kernel/sys_compat.c b/arch/arm64/kernel/sys_compat.c index de2b0226e06..dc47e53e9e2 100644 --- a/arch/arm64/kernel/sys_compat.c +++ b/arch/arm64/kernel/sys_compat.c @@ -79,6 +79,12 @@ long compat_arm_syscall(struct pt_regs *regs) case __ARM_NR_compat_set_tls: current->thread.tp_value = regs->regs[0]; + + /* + * Protect against register corruption from context switch. + * See comment in tls_thread_flush. + */ + barrier(); asm ("msr tpidrro_el0, %0" : : "r" (regs->regs[0])); return 0; |