diff options
| author | Nicholas Piggin <npiggin@gmail.com> | 2017-05-20 14:29:49 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2017-05-25 23:07:45 +1000 |
| commit | a4700a26107241cc7b9ac8528b2c6714ff99983d (patch) | |
| tree | 06e152b268a8bb2d1dfc77bd3541f5a88becb810 /arch/powerpc | |
| parent | d75e4919cc0b6fbcbc8d6654ef66d87a9dbf1526 (diff) | |
powerpc: Add PPC_FEATURE userspace bits for SCV and DARN instructions
Providing "scv" support to userspace requires kernel support, so it
must be advertised as independently to the base ISA 3 instruction set.
The darn instruction relies on firmware enablement, so it has been
decided to split this out from the core ISA 3 feature as well.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/include/uapi/asm/cputable.h | 2 | ||||
| -rw-r--r-- | arch/powerpc/kernel/cputable.c | 3 |
2 files changed, 4 insertions, 1 deletions
diff --git a/arch/powerpc/include/uapi/asm/cputable.h b/arch/powerpc/include/uapi/asm/cputable.h index 3e7ce86d5c13..4d877144f377 100644 --- a/arch/powerpc/include/uapi/asm/cputable.h +++ b/arch/powerpc/include/uapi/asm/cputable.h @@ -46,6 +46,8 @@ #define PPC_FEATURE2_HTM_NOSC 0x01000000 #define PPC_FEATURE2_ARCH_3_00 0x00800000 /* ISA 3.00 */ #define PPC_FEATURE2_HAS_IEEE128 0x00400000 /* VSX IEEE Binary Float 128-bit */ +#define PPC_FEATURE2_DARN 0x00200000 /* darn random number insn */ +#define PPC_FEATURE2_SCV 0x00100000 /* scv syscall */ /* * IMPORTANT! diff --git a/arch/powerpc/kernel/cputable.c b/arch/powerpc/kernel/cputable.c index 9b3e88b1a9c8..6f849832a669 100644 --- a/arch/powerpc/kernel/cputable.c +++ b/arch/powerpc/kernel/cputable.c @@ -124,7 +124,8 @@ extern void __restore_cpu_e6500(void); #define COMMON_USER_POWER9 COMMON_USER_POWER8 #define COMMON_USER2_POWER9 (COMMON_USER2_POWER8 | \ PPC_FEATURE2_ARCH_3_00 | \ - PPC_FEATURE2_HAS_IEEE128) + PPC_FEATURE2_HAS_IEEE128 | \ + PPC_FEATURE2_DARN ) #ifdef CONFIG_PPC_BOOK3E_64 #define COMMON_USER_BOOKE (COMMON_USER_PPC64 | PPC_FEATURE_BOOKE) |