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powerpc/tm: Make room for hypervisor in abort cause codes 

PAPR carves out 0xff-0xe0 for hypervisor use of transactional memory software
abort cause codes.  Unfortunately we don't respect this currently.

Below fixes this to move our cause codes to below this region.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Cc: <stable@vger.kernel.org> # 3.9 only
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Michael Neuling 2013-05-26 18:09:37 +00:00 committed by Benjamin Herrenschmidt
parent 58f8bbd2e3
commit 35f7097fce
1 changed files with 8 additions and 7 deletions
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15
arch/powerpc/include/asm/reg.h
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@ -113,14 +113,15 @@
/* Reason codes describing kernel causes for transaction aborts. By /* Reason codes describing kernel causes for transaction aborts. By
convention, bit0 is copied to TEXASR[56] (IBM bit 7) which is set if convention, bit0 is copied to TEXASR[56] (IBM bit 7) which is set if
the failure is persistent. the failure is persistent. PAPR saves 0xff-0xe0 for the hypervisor.
*/ */
#define TM_CAUSE_RESCHED 0xfe #define TM_CAUSE_PERSISTENT 0x01
#define TM_CAUSE_TLBI 0xfc #define TM_CAUSE_RESCHED 0xde
#define TM_CAUSE_FAC_UNAV 0xfa #define TM_CAUSE_TLBI 0xdc
#define TM_CAUSE_SYSCALL 0xf9 /* Persistent */ #define TM_CAUSE_FAC_UNAV 0xda
#define TM_CAUSE_MISC 0xf6 #define TM_CAUSE_SYSCALL 0xd8 /* future use */
#define TM_CAUSE_SIGNAL 0xf4 #define TM_CAUSE_MISC 0xd6 /* future use */
#define TM_CAUSE_SIGNAL 0xd4
#if defined(CONFIG_PPC_BOOK3S_64) #if defined(CONFIG_PPC_BOOK3S_64)
#define MSR_64BIT MSR_SF #define MSR_64BIT MSR_SF