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| author | Michael Neuling <mikey@neuling.org> | 2013-02-13 20:21:31 +0400 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2013-02-15 09:58:50 +0400 |
| commit | f4c3aff2230bfe696a0683073b77446248d7895c (patch) | |
| tree | 997bcea60e598438260933d14c87f0c63fde0eba /arch/powerpc/include/asm/processor.h | |
| parent | 14c39a4cf6bc4c3ef8ec40caa366047a87b0e031 (diff) | |
| download | linux-f4c3aff2230bfe696a0683073b77446248d7895c.tar.xz | |
powerpc: Add additional state needed for transactional memory to thread struct
Set of new archtected state for saving away on context switch.
Signed-off-by: Matt Evans <matt@ozlabs.org>
Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/include/asm/processor.h')
| -rw-r--r-- | arch/powerpc/include/asm/processor.h | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/processor.h b/arch/powerpc/include/asm/processor.h index 42ac53cebacd..fc41ab3aa114 100644 --- a/arch/powerpc/include/asm/processor.h +++ b/arch/powerpc/include/asm/processor.h @@ -246,6 +246,34 @@ struct thread_struct { unsigned long spefscr; /* SPE & eFP status */ int used_spe; /* set if process has used spe */ #endif /* CONFIG_SPE */ +#ifdef CONFIG_PPC_TRANSACTIONAL_MEM + u64 tm_tfhar; /* Transaction fail handler addr */ + u64 tm_texasr; /* Transaction exception & summary */ + u64 tm_tfiar; /* Transaction fail instr address reg */ + unsigned long tm_orig_msr; /* Thread's MSR on ctx switch */ + struct pt_regs ckpt_regs; /* Checkpointed registers */ + + /* + * Transactional FP and VSX 0-31 register set. + * NOTE: the sense of these is the opposite of the integer ckpt_regs! + * + * When a transaction is active/signalled/scheduled etc., *regs is the + * most recent set of/speculated GPRs with ckpt_regs being the older + * checkpointed regs to which we roll back if transaction aborts. + * + * However, fpr[] is the checkpointed 'base state' of FP regs, and + * transact_fpr[] is the new set of transactional values. + * VRs work the same way. + */ + double transact_fpr[32][TS_FPRWIDTH]; + struct { + unsigned int pad; + unsigned int val; /* Floating point status */ + } transact_fpscr; + vector128 transact_vr[32] __attribute__((aligned(16))); + vector128 transact_vscr __attribute__((aligned(16))); + unsigned long transact_vrsave; +#endif /* CONFIG_PPC_TRANSACTIONAL_MEM */ #ifdef CONFIG_KVM_BOOK3S_32_HANDLER void* kvm_shadow_vcpu; /* KVM internal data */ #endif /* CONFIG_KVM_BOOK3S_32_HANDLER */ |