From mboxrd@z Thu Jan 1 00:00:00 1970 From: ard.biesheuvel@linaro.org (Ard Biesheuvel) Date: Sat, 10 Jun 2017 16:22:47 +0000 Subject: [PATCH 01/12] arm64: neon: replace generic definition of may_use_simd() In-Reply-To: <1497111778-4210-1-git-send-email-ard.biesheuvel@linaro.org> References: <1497111778-4210-1-git-send-email-ard.biesheuvel@linaro.org> Message-ID: <1497111778-4210-2-git-send-email-ard.biesheuvel@linaro.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org In preparation of modifying the logic that decides whether kernel mode NEON is allowable, which is required for SVE support, introduce an implementation of may_use_simd() that reflects the current reality, i.e., that SIMD is allowed in any context. Signed-off-by: Ard Biesheuvel --- arch/arm64/include/asm/Kbuild | 1 - arch/arm64/include/asm/simd.h | 24 ++++++++++++++++++++ 2 files changed, 24 insertions(+), 1 deletion(-) diff --git a/arch/arm64/include/asm/Kbuild b/arch/arm64/include/asm/Kbuild index a7a97a608033..3c469b557ee8 100644 --- a/arch/arm64/include/asm/Kbuild +++ b/arch/arm64/include/asm/Kbuild @@ -31,7 +31,6 @@ generic-y += sembuf.h generic-y += serial.h generic-y += set_memory.h generic-y += shmbuf.h -generic-y += simd.h generic-y += sizes.h generic-y += socket.h generic-y += sockios.h diff --git a/arch/arm64/include/asm/simd.h b/arch/arm64/include/asm/simd.h new file mode 100644 index 000000000000..f8aa7b3a0140 --- /dev/null +++ b/arch/arm64/include/asm/simd.h @@ -0,0 +1,24 @@ +/* + * Copyright (C) 2017 Linaro Ltd. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + */ + +#ifndef __ASM_SIMD_H +#define __ASM_SIMD_H + +#include +#include + +/* + * may_use_simd - whether it is allowable at this time to issue SIMD + * instructions or access the SIMD register file + */ +static __must_check inline bool may_use_simd(void) +{ + return true; +} + +#endif -- 2.7.4