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powerpc: Add additional state needed for transactional memory to thread struct

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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>
This commit is contained in:
Michael Neuling 2013-02-13 16:21:31 +00:00 • committed by Benjamin Herrenschmidt
commit f4c3aff223
1 changed files with 28 additions and 0 deletions
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28
arch/powerpc/include/asm/processor.h
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@ -246,6 +246,34 @@ struct thread_struct {
unsigned long spefscr; /* SPE & eFP status */ unsigned long spefscr; /* SPE & eFP status */
int used_spe; /* set if process has used spe */ int used_spe; /* set if process has used spe */
#endif /* CONFIG_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 #ifdef CONFIG_KVM_BOOK3S_32_HANDLER
void* kvm_shadow_vcpu; /* KVM internal data */ void* kvm_shadow_vcpu; /* KVM internal data */
#endif /* CONFIG_KVM_BOOK3S_32_HANDLER */ #endif /* CONFIG_KVM_BOOK3S_32_HANDLER */