From: Andy Chiu <andy.chiu@sifive.com>
To: linux-riscv@lists.infradead.org, palmer@dabbelt.com,
anup@brainfault.org, atishp@atishpatra.org,
kvm-riscv@lists.infradead.org, kvm@vger.kernel.org
Cc: vineetg@rivosinc.com, greentime.hu@sifive.com,
guoren@linux.alibaba.com, Andy Chiu <andy.chiu@sifive.com>,
Paul Walmsley <paul.walmsley@sifive.com>,
Albert Ou <aou@eecs.berkeley.edu>
Subject: [PATCH -next v18 20/20] riscv: Enable Vector code to be built
Date: Fri, 14 Apr 2023 15:58:43 +0000 [thread overview]
Message-ID: <20230414155843.12963-21-andy.chiu@sifive.com> (raw)
In-Reply-To: <20230414155843.12963-1-andy.chiu@sifive.com>
From: Guo Ren <guoren@linux.alibaba.com>
This patch adds a config which enables vector feature from the kernel
space.
Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
Co-developed-by: Greentime Hu <greentime.hu@sifive.com>
Signed-off-by: Greentime Hu <greentime.hu@sifive.com>
Suggested-by: Vineet Gupta <vineetg@rivosinc.com>
Suggested-by: Atish Patra <atishp@atishpatra.org>
Co-developed-by: Andy Chiu <andy.chiu@sifive.com>
Signed-off-by: Andy Chiu <andy.chiu@sifive.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Heiko Stuebner <heiko.stuebner@vrull.eu>
Tested-by: Heiko Stuebner <heiko.stuebner@vrull.eu>
---
arch/riscv/Kconfig | 20 ++++++++++++++++++++
arch/riscv/Makefile | 6 +++++-
2 files changed, 25 insertions(+), 1 deletion(-)
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 205ce6e009a2..5edfc545aafd 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -442,6 +442,26 @@ config RISCV_ISA_SVPBMT
If you don't know what to do here, say Y.
+config TOOLCHAIN_HAS_V
+ bool
+ default y
+ depends on !64BIT || $(cc-option,-mabi=lp64 -march=rv64iv)
+ depends on !32BIT || $(cc-option,-mabi=ilp32 -march=rv32iv)
+ depends on LLD_VERSION >= 140000 || LD_VERSION >= 23800
+ depends on AS_HAS_OPTION_ARCH
+
+config RISCV_ISA_V
+ bool "VECTOR extension support"
+ depends on TOOLCHAIN_HAS_V
+ depends on FPU
+ select DYNAMIC_SIGFRAME
+ default y
+ help
+ Say N here if you want to disable all vector related procedure
+ in the kernel.
+
+ If you don't know what to do here, say Y.
+
config TOOLCHAIN_HAS_ZBB
bool
default y
diff --git a/arch/riscv/Makefile b/arch/riscv/Makefile
index 1b276f62f22b..94684dbe3b36 100644
--- a/arch/riscv/Makefile
+++ b/arch/riscv/Makefile
@@ -56,6 +56,7 @@ riscv-march-$(CONFIG_ARCH_RV32I) := rv32ima
riscv-march-$(CONFIG_ARCH_RV64I) := rv64ima
riscv-march-$(CONFIG_FPU) := $(riscv-march-y)fd
riscv-march-$(CONFIG_RISCV_ISA_C) := $(riscv-march-y)c
+riscv-march-$(CONFIG_RISCV_ISA_V) := $(riscv-march-y)v
# Newer binutils versions default to ISA spec version 20191213 which moves some
# instructions from the I extension to the Zicsr and Zifencei extensions.
@@ -65,7 +66,10 @@ riscv-march-$(toolchain-need-zicsr-zifencei) := $(riscv-march-y)_zicsr_zifencei
# Check if the toolchain supports Zihintpause extension
riscv-march-$(CONFIG_TOOLCHAIN_HAS_ZIHINTPAUSE) := $(riscv-march-y)_zihintpause
-KBUILD_CFLAGS += -march=$(subst fd,,$(riscv-march-y))
+# Remove F,D,V from isa string for all. Keep extensions between "fd" and "v" by
+# matching non-v and non-multi-letter extensions out with the filter ([^v_]*)
+KBUILD_CFLAGS += -march=$(shell echo $(riscv-march-y) | sed -E 's/(rv32ima|rv64ima)fd([^v_]*)v?/\1\2/')
+
KBUILD_AFLAGS += -march=$(riscv-march-y)
KBUILD_CFLAGS += -mno-save-restore
--
2.17.1
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next prev parent reply other threads:[~2023-04-14 17:01 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-04-14 15:58 [PATCH -next v18 00/20] riscv: Add vector ISA support Andy Chiu
2023-04-14 15:58 ` [PATCH -next v18 01/20] riscv: Rename __switch_to_aux() -> fpu Andy Chiu
2023-04-14 15:58 ` [PATCH -next v18 02/20] riscv: Extending cpufeature.c to detect V-extension Andy Chiu
2023-04-14 15:58 ` [PATCH -next v18 03/20] riscv: Add new csr defines related to vector extension Andy Chiu
2023-04-14 15:58 ` [PATCH -next v18 04/20] riscv: Clear vector regfile on bootup Andy Chiu
2023-04-14 15:58 ` [PATCH -next v18 05/20] riscv: Disable Vector Instructions for kernel itself Andy Chiu
2023-04-17 15:52 ` Heiko Stübner
2023-04-14 15:58 ` [PATCH -next v18 06/20] riscv: Introduce Vector enable/disable helpers Andy Chiu
2023-04-17 15:55 ` Heiko Stübner
2023-04-14 15:58 ` [PATCH -next v18 07/20] riscv: Introduce riscv_v_vsize to record size of Vector context Andy Chiu
2023-04-14 16:47 ` Conor Dooley
2023-04-17 15:55 ` Heiko Stübner
2023-04-14 15:58 ` [PATCH -next v18 08/20] riscv: Introduce struct/helpers to save/restore per-task Vector state Andy Chiu
2023-04-14 15:58 ` [PATCH -next v18 09/20] riscv: Add task switch support for vector Andy Chiu
2023-04-14 15:58 ` [PATCH -next v18 10/20] riscv: Allocate user's vector context in the first-use trap Andy Chiu
2023-04-14 16:40 ` Conor Dooley
2023-04-14 15:58 ` [PATCH -next v18 11/20] riscv: Add ptrace vector support Andy Chiu
2023-04-14 15:58 ` [PATCH -next v18 12/20] riscv: signal: check fp-reserved words unconditionally Andy Chiu
2023-04-14 15:58 ` [PATCH -next v18 13/20] riscv: signal: Add sigcontext save/restore for vector Andy Chiu
2023-04-14 15:58 ` [PATCH -next v18 14/20] riscv: signal: Report signal frame size to userspace via auxv Andy Chiu
2023-04-14 15:58 ` [PATCH -next v18 15/20] riscv: signal: validate altstack to reflect Vector Andy Chiu
2023-04-14 15:58 ` [PATCH -next v18 16/20] riscv: prevent stack corruption by reserving task_pt_regs(p) early Andy Chiu
2023-04-14 15:58 ` [PATCH -next v18 17/20] riscv: kvm: Add V extension to KVM ISA Andy Chiu
2023-04-14 15:58 ` [PATCH -next v18 18/20] riscv: KVM: Add vector lazy save/restore support Andy Chiu
2023-04-14 15:58 ` [PATCH -next v18 19/20] riscv: detect assembler support for .option arch Andy Chiu
2023-04-14 15:58 ` Andy Chiu [this message]
2023-04-17 15:56 ` [PATCH -next v18 00/20] riscv: Add vector ISA support Ben Dooks
2023-04-17 16:26 ` Andy Chiu
2023-04-19 7:43 ` Björn Töpel
2023-04-19 14:54 ` Björn Töpel
2023-04-19 15:18 ` Palmer Dabbelt
2023-04-20 16:36 ` Andy Chiu
2023-04-26 14:27 ` Palmer Dabbelt
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