[PATCH v7 0/2] RISC-V: add multiarch RVV support for memcpy using FMV IFUNC

[Xi Ruoyao]

On Tue, 2025-03-04 at 10:50 +0800, daichengrong wrote:
> 
> 在 2025/2/21 17:57:38, daichengrong@iscas.ac.cn 写道:
> > From: daichengrong <daichengrong@iscas.ac.cn>
> > 
> > Change in v7:
> >     update dl_hwcap support using kernel header
> >     update rvv memcpy compile with option,+v
> >     delete optimization for small lengths
> > 
> > This patch introduces vector support for memcpy with IFUNC.
> > The implementation selects the RVV optimized memcpy version via
> > dl_hwcap.
> > 
> > daichengrong (2):
> >    check rvv support in asm at sysdeps/riscv
> >    add riscv vector support for memcpy
> > 
> >   config.h.in                                   |  3 ++
> >   sysdeps/riscv/configure                       | 35
> > ++++++++++++++++++
> >   sysdeps/riscv/configure.ac                    | 25 +++++++++++++
> >   sysdeps/riscv/multiarch/memcpy_vector.S       | 37
> > +++++++++++++++++++
> >   .../unix/sysv/linux/riscv/multiarch/Makefile  |  6 +++
> >   .../linux/riscv/multiarch/ifunc-impl-list.c   | 14 +++++++
> >   .../unix/sysv/linux/riscv/multiarch/memcpy.c  |  8 ++++
> >   7 files changed, 128 insertions(+)
> >   mode change 100644 => 100755 sysdeps/riscv/configure
> >   create mode 100644 sysdeps/riscv/multiarch/memcpy_vector.S
> I Recently noticed the Patch Queue Review meeting, and as mentioned in
> the previous notes, I am confused about the mean of RISCV maintainers 
> are working on this. Does it mean that the RVV support provided by 
> machine maintainers will come soon? Before that, any patches on RVV 
> support will not be accepted?

No, it means the RISC-V maintainers should review this patch.


-- 
Xi Ruoyao <xry111@xry111.site>
School of Aerospace Science and Technology, Xidian University