Re: [PATCH -next v18 00/20] riscv: Add vector ISA support

[Jeff Law <jeffreyalaw@gmail.com>]

On 4/26/23 08:27, Palmer Dabbelt wrote:

> 
> A few of us were talking in the patchwork meeting.  It's kind of a grey 
> area here, but we're just going to play it safe and wait for the prctl 
> and sys interfaces to show up before merging this.
> 
> I know it's a pain to have to wait another release, but there's still no 
> publicly availiable V hardware yet so waiting isn't concretely impacting 
> users right now.  If we flip on V now we probably won't get a ton of 
> testing, so we risk the ABI break sticking around for a few release 
> which would be a huge headache.
> 
> Andy said he'd be able to do the prtcl and sys interfaces pretty 
> quickly, so hopfully everything's lined up for the next release.
 From a scheduling standpoint, it would be best if we could have the 
glibc side wrapped up over the next 2-3 months.  That way the bits make 
the August glibc release.  Obviously we need to have a suitable fallback 
path when running with old kernels.

Jeff