Messages in this thread | | | Date | Thu, 14 Sep 2023 12:14:16 -0400 | From | Charlie Jenkins <> | Subject | Re: [PATCH v4 4/5] riscv: Vector checksum library |
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On Thu, Sep 14, 2023 at 01:46:29PM +0100, Conor Dooley wrote: > On Mon, Sep 11, 2023 at 03:57:14PM -0700, Charlie Jenkins wrote: > > This patch is not ready for merge as vector support in the kernel is > > limited. However, the code has been tested in QEMU so the algorithms > > do work. This code requires the kernel to be compiled with C vector > > support, but that is not yet possible. It is written in assembly > > rather than using the GCC vector instrinsics because they did not > > provide optimal code. > > > > Signed-off-by: Charlie Jenkins <charlie@rivosinc.com> > > --- > > arch/riscv/lib/csum.c | 92 +++++++++++++++++++++++++++++++++++++++++++++++++++ > > 1 file changed, 92 insertions(+) > > > > diff --git a/arch/riscv/lib/csum.c b/arch/riscv/lib/csum.c > > index 47d98c51bab2..eb4596fc7f5b 100644 > > --- a/arch/riscv/lib/csum.c > > +++ b/arch/riscv/lib/csum.c > > @@ -12,6 +12,10 @@ > > > > #include <net/checksum.h> > > > > +#ifdef CONFIG_RISCV_ISA_V > > +#include <riscv_vector.h> > > What actually includes this header, I don't see it in either Andy's > in-kernel vector series or Bjorn's blake2 one. > Can you link to the pre-requisites in your cover letter please. > > Thanks, > Conor.
It is defined here: https://github.com/riscv-non-isa/rvv-intrinsic-doc/blob/main/doc/rvv-intrinsic-spec.adoc. The header is for the vector intrinsics that are supported by llvm and gcc.
- Charlie
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