Re: [PATCH -next v20 23/26] riscv: Enable Vector code to be built

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On Thu, 18 May 2023 10:31:37 PDT (-0700), Conor Dooley wrote:
On Thu, May 18, 2023 at 04:19:46PM +0000, Andy Chiu wrote:
From: Guo Ren <guoren@xxxxxxxxxxxxxxxxx>

This patch adds configs for building Vector code. First it detects the
reqired toolchain support for building the code. Then it provides an
option setting whether Vector is implicitly enabled to userspace.

Signed-off-by: Guo Ren <guoren@xxxxxxxxxxxxxxxxx>
Co-developed-by: Greentime Hu <greentime.hu@xxxxxxxxxx>
Signed-off-by: Greentime Hu <greentime.hu@xxxxxxxxxx>

Suggested-by: Conor Dooley <conor.dooley@xxxxxxxxxxxxx>>

You can drop this tag if you respin, I just provided review comments ;)
Also, it has an extra > at the end.

Otherwise, I am still not sold on the "default y", but we can always
flip it if there is in fact a regression.

It's definately the riskier of the options, but the uABI issue will only manifest on systems that have V hardware. Those don't exist yet, so aside from folks running QEMU (who probably want V) we're only risking tripping up users on pre-release silicion -- and that's always a headache, so whatever ;)

Reviewed-by: Conor Dooley <conor.dooley@xxxxxxxxxxxxx>

Thanks.



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