[PATCH] powerpc: Add POWER8 features to CPU_FTRS_POSSIBLE/ALWAYS
From: Michael Ellerman <mpe@ellerman.id.au>
Date: 2014-08-06 05:42:21
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Linus Torvalds
We have been a bit slack about updating the CPU_FTRS_POSSIBLE and CPU_FTRS_ALWAYS masks. When we added POWER8, and also POWER8E we forgot to update the ALWAYS mask. And when we added POWER8_DD1 we forgot to update both the POSSIBLE and ALWAYS masks. Luckily this hasn't caused any actual bugs AFAICS. Failing to update the ALWAYS mask just forgoes a potential optimisation opportunity. Failing to update the POSSIBLE mask for POWER8_DD1 is also OK because it only removes a bit rather than adding any. Regardless they should all be in both masks so as to avoid any future bugs when the set of ALWAYS/POSSIBLE bits changes, or the masks themselves change. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> --- arch/powerpc/include/asm/cputable.h | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/include/asm/cputable.h b/arch/powerpc/include/asm/cputable.h
index af5598688daf..d696eeb2def0 100644
--- a/arch/powerpc/include/asm/cputable.h
+++ b/arch/powerpc/include/asm/cputable.h@@ -458,7 +458,8 @@ extern const char *powerpc_base_platform; #define CPU_FTRS_POSSIBLE \ (CPU_FTRS_POWER4 | CPU_FTRS_PPC970 | CPU_FTRS_POWER5 | \ CPU_FTRS_POWER6 | CPU_FTRS_POWER7 | CPU_FTRS_POWER8E | \ - CPU_FTRS_POWER8 | CPU_FTRS_CELL | CPU_FTRS_PA6T | CPU_FTR_VSX) + CPU_FTRS_POWER8 | CPU_FTRS_POWER8_DD1 | CPU_FTRS_CELL | \ + CPU_FTRS_PA6T | CPU_FTR_VSX) #endif #else enum {
@@ -508,7 +509,8 @@ enum { #define CPU_FTRS_ALWAYS \ (CPU_FTRS_POWER4 & CPU_FTRS_PPC970 & CPU_FTRS_POWER5 & \ CPU_FTRS_POWER6 & CPU_FTRS_POWER7 & CPU_FTRS_CELL & \ - CPU_FTRS_PA6T & CPU_FTRS_POSSIBLE) + CPU_FTRS_PA6T & CPU_FTRS_POWER8 & CPU_FTRS_POWER8E & \ + CPU_FTRS_POWER8_DD1 & CPU_FTRS_POSSIBLE) #endif #else enum {
--
1.9.1