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[114.34.229.221]) by smtp.gmail.com with ESMTPSA id q29sm3773366pfg.79.2020.05.27.23.41.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 27 May 2020 23:41:19 -0700 (PDT) From: Greentime Hu To: greentime.hu@sifive.com, guoren@linux.alibaba.com, vincent.chen@sifive.com, paul.walmsley@sifive.com, palmerdabbelt@google.com, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, oleg@redhat.com Subject: [RFC PATCH v5 06/13] riscv: Add vector feature to compile Date: Thu, 28 May 2020 14:40:54 +0800 Message-Id: X-Mailer: git-send-email 2.26.2 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Guo Ren This patch adds a new config option which could enable assembler's vector feature. Signed-off-by: Guo Ren --- arch/riscv/Kconfig | 9 +++++++++ arch/riscv/Makefile | 1 + 2 files changed, 10 insertions(+) diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index 74f82cf4f781..3b742d949a09 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -305,6 +305,15 @@ config FPU If you don't know what to do here, say Y. +config VECTOR + bool "VECTOR support" + default n + help + Say N here if you want to disable all vector related procedure + in the kernel. + + If you don't know what to do here, say Y. + endmenu menu "Kernel features" diff --git a/arch/riscv/Makefile b/arch/riscv/Makefile index 957d064bead0..7c80c95582e3 100644 --- a/arch/riscv/Makefile +++ b/arch/riscv/Makefile @@ -46,6 +46,7 @@ riscv-march-aflags-$(CONFIG_ARCH_RV32I) := rv32ima riscv-march-aflags-$(CONFIG_ARCH_RV64I) := rv64ima riscv-march-aflags-$(CONFIG_FPU) := $(riscv-march-aflags-y)fd riscv-march-aflags-$(CONFIG_RISCV_ISA_C) := $(riscv-march-aflags-y)c +riscv-march-aflags-$(CONFIG_VECTOR) := $(riscv-march-aflags-y)v KBUILD_CFLAGS += -march=$(riscv-march-cflags-y) KBUILD_AFLAGS += -march=$(riscv-march-aflags-y) -- 2.26.2