powerpc: Add AT_HWCAP2 to indicate V.CRYPTO category support

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+]

1 files changed, 2 insertions, 1 deletions

diff --git a/arch/powerpc/kernel/cputable.c b/arch/powerpc/kernel/cputable.c
index c1faade6506d..11da04a4625a 100644
--- a/arch/powerpc/kernel/cputable.c
+++ b/arch/powerpc/kernel/cputable.c
@@ -109,7 +109,8 @@ extern void __restore_cpu_e6500(void);
                                  PPC_FEATURE_PSERIES_PERFMON_COMPAT)
 #define COMMON_USER2_POWER8     (PPC_FEATURE2_ARCH_2_07 | \
                                  PPC_FEATURE2_HTM_COMP | PPC_FEATURE2_DSCR | \
-                                 PPC_FEATURE2_ISEL | PPC_FEATURE2_TAR)
+                                 PPC_FEATURE2_ISEL | PPC_FEATURE2_TAR | \
+                                 PPC_FEATURE2_VEC_CRYPTO)
 #define COMMON_USER_PA6T        (COMMON_USER_PPC64 | PPC_FEATURE_PA6T |\
                                  PPC_FEATURE_TRUE_LE | \
                                  PPC_FEATURE_HAS_ALTIVEC_COMP)