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| author |   David S. Miller <davem@davemloft.net> | 2014-09-23 12:09:27 -0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-09-23 12:09:27 -0400 |
| commit | 1f6d80358dc9bbbeb56cb43384fa11fd645d9289 (patch) | |
| tree | 152bfa5165292a8e4f06d536b6d222a68480e573 /arch/arm64/kernel/sys_compat.c | |
| parent | net: sched: fix compile warning in cls_u32 (diff) | |
| parent | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net (diff) | |
| download | linux-dev-1f6d80358dc9bbbeb56cb43384fa11fd645d9289.tar.xz linux-dev-1f6d80358dc9bbbeb56cb43384fa11fd645d9289.zip | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts:
arch/mips/net/bpf_jit.c
drivers/net/can/flexcan.c
Both the flexcan and MIPS bpf_jit conflicts were cases of simple
overlapping changes.
Signed-off-by: David S. Miller <davem@davemloft.net>
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 de2b0226e06d..dc47e53e9e28 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; |