diff options
Diffstat (limited to 'arch/powerpc/kernel/process.c')
| -rw-r--r-- | arch/powerpc/kernel/process.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c index 48a987579e4f..59dd545fdde1 100644 --- a/arch/powerpc/kernel/process.c +++ b/arch/powerpc/kernel/process.c @@ -515,7 +515,7 @@ out_and_saveregs: tm_save_sprs(thr); } -static inline void __maybe_unused tm_recheckpoint_new_task(struct task_struct *new) +static inline void tm_recheckpoint_new_task(struct task_struct *new) { unsigned long msr; @@ -590,6 +590,8 @@ struct task_struct *__switch_to(struct task_struct *prev, struct ppc64_tlb_batch *batch; #endif + __switch_to_tm(prev); + #ifdef CONFIG_SMP /* avoid complexity of lazy save/restore of fpu * by just saving it every time we switch out if @@ -705,6 +707,9 @@ struct task_struct *__switch_to(struct task_struct *prev, * of sync. Hard disable here. */ hard_irq_disable(); + + tm_recheckpoint_new_task(new); + last = _switch(old_thread, new_thread); #ifdef CONFIG_PPC_BOOK3S_64 @@ -1080,7 +1085,6 @@ void start_thread(struct pt_regs *regs, unsigned long start, unsigned long sp) regs->msr = MSR_USER32; } #endif - discard_lazy_cpu_state(); #ifdef CONFIG_VSX current->thread.used_vsr = 0; @@ -1100,6 +1104,13 @@ void start_thread(struct pt_regs *regs, unsigned long start, unsigned long sp) current->thread.spefscr = 0; current->thread.used_spe = 0; #endif /* CONFIG_SPE */ +#ifdef CONFIG_PPC_TRANSACTIONAL_MEM + if (cpu_has_feature(CPU_FTR_TM)) + regs->msr |= MSR_TM; + current->thread.tm_tfhar = 0; + current->thread.tm_texasr = 0; + current->thread.tm_tfiar = 0; +#endif /* CONFIG_PPC_TRANSACTIONAL_MEM */ } #define PR_FP_ALL_EXCEPT (PR_FP_EXC_DIV | PR_FP_EXC_OVF | PR_FP_EXC_UND \ |