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 <npig...@gmail.com>
---
These uapi changes have been agreed by powerpc toolchain and firmware
teams. I believe this completes our anticipated requirements for user
feature advertisement for ISA v3.0B.
arch/powerpc/include/uapi/asm/cputable.h | 2 ++
arch/powerpc/kernel/cputable.c | 3 ++-
2 files changed, 4 insertions(+), 1 deletion(-)
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)
--
2.11.0
