diff options
author | Ishan Mittal <imittal@nvidia.com> | 2014-06-05 13:31:21 +0530 |
---|---|---|
committer | Ishan Mittal <imittal@nvidia.com> | 2014-06-05 13:37:37 +0530 |
commit | dce68ca8e1015cf5bcd33284c0c1c9191e79885d (patch) | |
tree | 7fed5c66956b9ffeadac67750aa042fc9b70f1a1 /arch/powerpc/kernel | |
parent | 60ca8709496cbcfe7dc931a2ec8786f82b2761eb (diff) | |
parent | be67db109090b17b56eb8eb2190cd70700f107aa (diff) |
Merge branch 'linux-3.10.40' into rel-21
Bug 200004122
Conflicts:
drivers/cpufreq/cpufreq.c
drivers/regulator/core.c
sound/soc/codecs/max98090.c
Change-Id: I9418a05ad5c56b2e902249218bac2fa594d99f56
Signed-off-by: Ishan Mittal <imittal@nvidia.com>
Diffstat (limited to 'arch/powerpc/kernel')
-rw-r--r-- | arch/powerpc/kernel/process.c | 34 | ||||
-rw-r--r-- | arch/powerpc/kernel/reloc_64.S | 1 | ||||
-rw-r--r-- | arch/powerpc/kernel/signal_32.c | 2 | ||||
-rw-r--r-- | arch/powerpc/kernel/signal_64.c | 2 | ||||
-rw-r--r-- | arch/powerpc/kernel/tm.S | 2 |
5 files changed, 34 insertions, 7 deletions
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c index 7baa27b7abbe..1e1c995ddacc 100644 --- a/arch/powerpc/kernel/process.c +++ b/arch/powerpc/kernel/process.c @@ -523,6 +523,31 @@ out_and_saveregs: tm_save_sprs(thr); } +extern void __tm_recheckpoint(struct thread_struct *thread, + unsigned long orig_msr); + +void tm_recheckpoint(struct thread_struct *thread, + unsigned long orig_msr) +{ + unsigned long flags; + + /* We really can't be interrupted here as the TEXASR registers can't + * change and later in the trecheckpoint code, we have a userspace R1. + * So let's hard disable over this region. + */ + local_irq_save(flags); + hard_irq_disable(); + + /* The TM SPRs are restored here, so that TEXASR.FS can be set + * before the trecheckpoint and no explosion occurs. + */ + tm_restore_sprs(thread); + + __tm_recheckpoint(thread, orig_msr); + + local_irq_restore(flags); +} + static inline void tm_recheckpoint_new_task(struct task_struct *new) { unsigned long msr; @@ -541,13 +566,10 @@ static inline void tm_recheckpoint_new_task(struct task_struct *new) if (!new->thread.regs) return; - /* The TM SPRs are restored here, so that TEXASR.FS can be set - * before the trecheckpoint and no explosion occurs. - */ - tm_restore_sprs(&new->thread); - - if (!MSR_TM_ACTIVE(new->thread.regs->msr)) + if (!MSR_TM_ACTIVE(new->thread.regs->msr)){ + tm_restore_sprs(&new->thread); return; + } msr = new->thread.tm_orig_msr; /* Recheckpoint to restore original checkpointed register state. */ TM_DEBUG("*** tm_recheckpoint of pid %d " diff --git a/arch/powerpc/kernel/reloc_64.S b/arch/powerpc/kernel/reloc_64.S index b47a0e1ab001..c712ecec13ba 100644 --- a/arch/powerpc/kernel/reloc_64.S +++ b/arch/powerpc/kernel/reloc_64.S @@ -81,6 +81,7 @@ _GLOBAL(relocate) 6: blr +.balign 8 p_dyn: .llong __dynamic_start - 0b p_rela: .llong __rela_dyn_start - 0b p_st: .llong _stext - 0b diff --git a/arch/powerpc/kernel/signal_32.c b/arch/powerpc/kernel/signal_32.c index 2ba0d133bca7..a59d18608033 100644 --- a/arch/powerpc/kernel/signal_32.c +++ b/arch/powerpc/kernel/signal_32.c @@ -863,6 +863,8 @@ static long restore_tm_user_regs(struct pt_regs *regs, * transactional versions should be loaded. */ tm_enable(); + /* Make sure the transaction is marked as failed */ + current->thread.tm_texasr |= TEXASR_FS; /* This loads the checkpointed FP/VEC state, if used */ tm_recheckpoint(¤t->thread, msr); /* Get the top half of the MSR */ diff --git a/arch/powerpc/kernel/signal_64.c b/arch/powerpc/kernel/signal_64.c index 35c20a1fb365..74d9615a6bb6 100644 --- a/arch/powerpc/kernel/signal_64.c +++ b/arch/powerpc/kernel/signal_64.c @@ -513,6 +513,8 @@ static long restore_tm_sigcontexts(struct pt_regs *regs, } #endif tm_enable(); + /* Make sure the transaction is marked as failed */ + current->thread.tm_texasr |= TEXASR_FS; /* This loads the checkpointed FP/VEC state, if used */ tm_recheckpoint(¤t->thread, msr); diff --git a/arch/powerpc/kernel/tm.S b/arch/powerpc/kernel/tm.S index f2abb219a17b..1e43ed404b95 100644 --- a/arch/powerpc/kernel/tm.S +++ b/arch/powerpc/kernel/tm.S @@ -296,7 +296,7 @@ dont_backup_fp: * Call with IRQs off, stacks get all out of sync for * some periods in here! */ -_GLOBAL(tm_recheckpoint) +_GLOBAL(__tm_recheckpoint) mfcr r5 mflr r0 std r5, 8(r1) |