projects
/
GitHub
/
mt8127
/
android_kernel_alcatel_ttab.git
/ blobdiff
commit
grep
author
committer
pickaxe
?
search:
re
summary
|
shortlog
|
log
|
commit
|
commitdiff
|
tree
raw
|
inline
| side by side
Merge tag 'v3.10.56' into update
[GitHub/mt8127/android_kernel_alcatel_ttab.git]
/
arch
/
arm64
/
kernel
/
sys_compat.c
diff --git
a/arch/arm64/kernel/sys_compat.c
b/arch/arm64/kernel/sys_compat.c
index de2b0226e06df34fd7aaa4bb55e014fc33f9cddf..dc47e53e9e28c15da99e62976a9ca29f71da8bc4 100644
(file)
--- 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];
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;
asm ("msr tpidrro_el0, %0" : : "r" (regs->regs[0]));
return 0;