[PATCH v12 05/17] riscv: Add has_vector/riscv_vsize to save vector features.

[Samuel Holland]

On 9/21/22 16:43, Chris Stillson wrote:
> From: Greentime Hu <greentime.hu at sifive.com>
> 
> This patch is used to detect vector support status of CPU and use
> riscv_vsize to save the size of all the vector registers. It assumes
> all harts has the same capabilities in SMP system.
> 
> [guoren at linux.alibaba.com: add has_vector checking]
> Co-developed-by: Guo Ren <guoren at linux.alibaba.com>
> Signed-off-by: Guo Ren <guoren at linux.alibaba.com>
> Co-developed-by: Vincent Chen <vincent.chen at sifive.com>
> Signed-off-by: Vincent Chen <vincent.chen at sifive.com>
> Signed-off-by: Greentime Hu <greentime.hu at sifive.com>
> ---
>  arch/riscv/include/asm/vector.h | 14 +++++
>  arch/riscv/kernel/cpufeature.c  | 19 +++++++
>  arch/riscv/kernel/riscv_ksyms.c |  6 +++
>  arch/riscv/kernel/vector.S      | 93 +++++++++++++++++++++++++++++++++

This file is not added to the Makefile until patch 8.

>  4 files changed, 132 insertions(+)
>  create mode 100644 arch/riscv/include/asm/vector.h
>  create mode 100644 arch/riscv/kernel/vector.S