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powerpc: Add AT_HWCAP2 to indicate V.CRYPTO category support

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The Vector Crypto category instructions are supported by current POWER8
chips, advertise them to userspace using a specific bit to properly
differentiate with chips of the same architecture level that might not
have them.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
CC: <stable@vger.kernel.org> [v3.10+]
This commit is contained in:
Benjamin Herrenschmidt
2014-06-10 15:04:40 +10:00
parent dfb945473a
commit dd58a092c4
2 changed files with 3 additions and 1 deletions
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arch/powerpc/include/uapi/asm/cputable.h
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@@ -41,5 +41,6 @@
#define PPC_FEATURE2_EBB 0x10000000
#define PPC_FEATURE2_ISEL 0x08000000
#define PPC_FEATURE2_TAR 0x04000000
#define PPC_FEATURE2_VEC_CRYPTO 0x02000000
#endif /* _UAPI__ASM_POWERPC_CPUTABLE_H */