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| author | Thomas Gleixner <tglx@linutronix.de> | 2013-08-21 14:44:54 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2013-08-21 14:44:54 +0200 |
| commit | fac778a2b8d6ca953d440baeee72901c2dd5aad9 (patch) | |
| tree | c43d780b5ff8819f4353b16c99601c5ceeeacad7 /arch/powerpc/kernel/process.c | |
| parent | 07862c1cd6675cde2dd4bd64e64d704ea2185b79 (diff) | |
| parent | 94fc5d9de5bd757ad46f0d94bc4ebf617c4487f6 (diff) | |
Merge branch 'linus' into timers/core
Reason: Get upstream changes on which new patches depend on.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/powerpc/kernel/process.c')
| -rw-r--r-- | arch/powerpc/kernel/process.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c index c517dbe705fd..8083be20fe5e 100644 --- a/arch/powerpc/kernel/process.c +++ b/arch/powerpc/kernel/process.c @@ -600,6 +600,16 @@ struct task_struct *__switch_to(struct task_struct *prev, struct ppc64_tlb_batch *batch; #endif + /* Back up the TAR across context switches. + * Note that the TAR is not available for use in the kernel. (To + * provide this, the TAR should be backed up/restored on exception + * entry/exit instead, and be in pt_regs. FIXME, this should be in + * pt_regs anyway (for debug).) + * Save the TAR here before we do treclaim/trecheckpoint as these + * will change the TAR. + */ + save_tar(&prev->thread); + __switch_to_tm(prev); #ifdef CONFIG_SMP |