diff options
| author | Michael Neuling <mikey@neuling.org> | 2014-03-28 06:40:34 +0100 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2014-04-28 09:36:51 +0200 |
| commit | 7f06f21d40a638e1ca759ceda0f21cd81082607e (patch) | |
| tree | 98367966915e49126bc05e0ae1797a986550e93b /arch/powerpc/include/asm/reg.h | |
| parent | powerpc/tm: Remove unnecessary r1 save (diff) | |
| download | linux-7f06f21d40a638e1ca759ceda0f21cd81082607e.tar.xz linux-7f06f21d40a638e1ca759ceda0f21cd81082607e.zip | |
powerpc/tm: Add checking to treclaim/trechkpt
If we do a treclaim and we are not in TM suspend mode, it results in a TM bad
thing (ie. a 0x700 program check). Similarly if we do a trechkpt and we have
an active transaction or TEXASR Failure Summary (FS) is not set, we also take a
TM bad thing.
This should never happen, but if it does (ie. a kernel bug), the cause is
almost impossible to debug as the GPR state is mostly userspace and hence we
don't get a call chain.
This adds some checks in these cases case a BUG_ON() (in asm) in case we ever
hit these cases. It moves the register saving around to preserve r1 till later
also.
Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/include/asm/reg.h')
| -rw-r--r-- | arch/powerpc/include/asm/reg.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/reg.h b/arch/powerpc/include/asm/reg.h index e5d2e0bc7e03..29de0152878f 100644 --- a/arch/powerpc/include/asm/reg.h +++ b/arch/powerpc/include/asm/reg.h @@ -215,6 +215,7 @@ #define SPRN_TEXASR 0x82 /* Transaction EXception & Summary */ #define TEXASR_FS __MASK(63-36) /* Transaction Failure Summary */ #define SPRN_TEXASRU 0x83 /* '' '' '' Upper 32 */ +#define TEXASR_FS __MASK(63-36) /* TEXASR Failure Summary */ #define SPRN_TFHAR 0x80 /* Transaction Failure Handler Addr */ #define SPRN_CTRLF 0x088 #define SPRN_CTRLT 0x098 |