Messages in this thread | | | Date | Tue, 14 Dec 2021 08:29:24 -0800 (PST) | Subject | Re: [PATCH v9 05/17] riscv: Add vector feature to compile | From | Palmer Dabbelt <> |
| |
On Tue, 09 Nov 2021 01:48:17 PST (-0800), greentime.hu@sifive.com wrote: > From: Guo Ren <guoren@linux.alibaba.com> > > This patch adds a new config option which could enable assembler's > vector feature. > > Signed-off-by: Greentime Hu <greentime.hu@sifive.com> > Signed-off-by: Guo Ren <guoren@linux.alibaba.com> > Reviewed-by: Greentime Hu <greentime.hu@sifive.com> > --- > arch/riscv/Kconfig | 9 +++++++++ > arch/riscv/Makefile | 1 + > 2 files changed, 10 insertions(+) > > diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig > index f076cee11af6..0311579920b9 100644 > --- a/arch/riscv/Kconfig > +++ b/arch/riscv/Kconfig > @@ -389,6 +389,15 @@ 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
As the kernel build robot points out, this should have some sort of dependency on a vector toolchain. Not sure if there's a better way to do it that cc-option, looks like there are some other tests for assembler arguments that way.
> > menu "Kernel features" > diff --git a/arch/riscv/Makefile b/arch/riscv/Makefile > index 37de70df4fae..f109214a2d7f 100644 > --- a/arch/riscv/Makefile > +++ b/arch/riscv/Makefile > @@ -57,6 +57,7 @@ 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)
| |