[PATCH -next v15 08/19] riscv: Introduce struct/helpers to save/restore per-task Vector state

[Andy Chiu]

On Mon, Mar 20, 2023 at 9:05 PM Conor Dooley <conor.dooley at microchip.com> wrote:
>
> On Fri, Mar 17, 2023 at 11:35:27AM +0000, Andy Chiu wrote:
> > From: Greentime Hu <greentime.hu at sifive.com>
> >
> > Add vector state context struct to be added later in thread_struct. And
> > prepare low-level helper functions to save/restore vector contexts.
> >
> > This include Vector Regfile and CSRs holding dynamic configuration state
> > (vstart, vl, vtype, vcsr). The Vec Register width could be implementation
> > defined, but same for all processes, so that is saved separately.
> >
> > This is not yet wired into final thread_struct - will be done when
> > __switch_to actually starts doing this in later patches.
> >
> > Given the variable (and potentially large) size of regfile, they are
> > saved in dynamically allocated memory, pointed to by datap pointer in
> > __riscv_v_ext_state.
> >
> > 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>
> > Signed-off-by: Vineet Gupta <vineetg at rivosinc.com>
> > Signed-off-by: Andy Chiu <andy.chiu at sifive.com>
>
> I think you missed a:
> Acked-by: Conor Dooley <conor.dooley at microchip.com>
>
> Thanks,
> Conor.
>

Yes, removed it on purpose because I changed some inline assembly in
this submission. So I think you may want to take a look in case I did
something silly.

Thanks,
Andy.