From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pf0-x241.google.com (mail-pf0-x241.google.com [IPv6:2607:f8b0:400e:c00::241]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 3wVBmK3MVKzDqdg for ; Sat, 20 May 2017 14:30:09 +1000 (AEST) Received: by mail-pf0-x241.google.com with SMTP id f27so11417841pfe.0 for ; Fri, 19 May 2017 21:30:08 -0700 (PDT) From: Nicholas Piggin To: linuxppc-dev@lists.ozlabs.org Cc: Nicholas Piggin , tuliom@linux.vnet.ibm.com, Michael Ellerman , benh@ozlabs.au.ibm.com, Peter Bergner , Michael Neuling , Steve Munroe , Bill Schmidt Subject: [PATCH] powerpc: add PPC_FEATURE userspace bits for SCV and DARN instructions Date: Sat, 20 May 2017 14:29:49 +1000 Message-Id: <20170520042949.29359-1-npiggin@gmail.com> List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , 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 --- 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