diff options
| author | Michael Ellerman <mpe@ellerman.id.au> | 2014-03-14 16:00:28 +1100 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2014-03-24 09:48:24 +1100 |
| commit | 68f2f0d431d9ea4fbd373cd31e828b0ceaefea30 (patch) | |
| tree | 545e3db0f6fb09ab21f9a37ef2c79ea26f3c26e9 /arch/powerpc/include | |
| parent | 5f6d0380c64051400961accf99ec41e70ec6d8ca (diff) | |
powerpc: Add a cpu feature CPU_FTR_PMAO_BUG
Some power8 revisions have a hardware bug where we can lose a
Performance Monitor (PMU) exception under certain circumstances.
We will be adding a workaround for this case, see the next commit for
details. The observed behaviour is that writing PMAO doesn't cause an
exception as we would expect, hence the name of the feature.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/include')
| -rw-r--r-- | arch/powerpc/include/asm/cputable.h | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/arch/powerpc/include/asm/cputable.h b/arch/powerpc/include/asm/cputable.h index 617cc767c07..bc2347774f0 100644 --- a/arch/powerpc/include/asm/cputable.h +++ b/arch/powerpc/include/asm/cputable.h @@ -189,6 +189,7 @@ extern const char *powerpc_base_platform; #define CPU_FTR_HAS_PPR LONG_ASM_CONST(0x0200000000000000) #define CPU_FTR_DAWR LONG_ASM_CONST(0x0400000000000000) #define CPU_FTR_DABRX LONG_ASM_CONST(0x0800000000000000) +#define CPU_FTR_PMAO_BUG LONG_ASM_CONST(0x1000000000000000) #ifndef __ASSEMBLY__ @@ -445,6 +446,7 @@ extern const char *powerpc_base_platform; CPU_FTR_ICSWX | CPU_FTR_CFAR | CPU_FTR_HVMODE | CPU_FTR_VMX_COPY | \ CPU_FTR_DBELL | CPU_FTR_HAS_PPR | CPU_FTR_DAWR | \ CPU_FTR_ARCH_207S | CPU_FTR_TM_COMP) +#define CPU_FTRS_POWER8E (CPU_FTRS_POWER8 | CPU_FTR_PMAO_BUG) #define CPU_FTRS_CELL (CPU_FTR_USE_TB | CPU_FTR_LWSYNC | \ CPU_FTR_PPCAS_ARCH_V2 | CPU_FTR_CTRL | \ CPU_FTR_ALTIVEC_COMP | CPU_FTR_MMCRA | CPU_FTR_SMT | \ @@ -466,8 +468,8 @@ extern const char *powerpc_base_platform; #define CPU_FTRS_POSSIBLE \ (CPU_FTRS_POWER3 | CPU_FTRS_RS64 | CPU_FTRS_POWER4 | \ CPU_FTRS_PPC970 | CPU_FTRS_POWER5 | CPU_FTRS_POWER6 | \ - CPU_FTRS_POWER7 | CPU_FTRS_POWER8 | CPU_FTRS_CELL | \ - CPU_FTRS_PA6T | CPU_FTR_VSX) + CPU_FTRS_POWER7 | CPU_FTRS_POWER8E | CPU_FTRS_POWER8 | \ + CPU_FTRS_CELL | CPU_FTRS_PA6T | CPU_FTR_VSX) #endif #else enum { |