[PATCH] eal: fix alignment of RISCV xmm vector type

[Stanisław Kardach]

On Wed, Nov 15, 2023 at 10:31 PM Morten Brørup <mb at smartsharesystems.com> wrote:
>
> > From: Tyler Retzlaff [mailto:roretzla at linux.microsoft.com]
> > Sent: Wednesday, 15 November 2023 22.17
> >
> > Fix the alignment for rte_xmm_t it should be 16 instead of 8 bytes.
> >
> > Fixes: f22e705ebf12 ("eal/riscv: support RISC-V architecture")
> > Cc: maz at semihalf.com
> > Cc: stable at dpdk.org
> > Signed-off-by: Tyler Retzlaff <roretzla at linux.microsoft.com>
> > ---
>
> Reviewed-by: Morten Brørup <mb at smartsharesystems.com>
>
> As mentioned in the other thread:
>
> We need to urgently decide if this bug should live on in DPDK 23.11, or if the fix should be included although we are very late in the release process.
>
> Stanislaw, what do you think?
Good catch! As for backporting I'm not sure of the urgency given that
our examples still use scalar instructions for handling xmm_t. The
question is whether there is a platform in use which has vector
extensions enabled and that utilizes DPDK. I'm not that sure of it
though I'd be happy to be proven wrong.

Reviewed-by: Stanislaw Kardach <kda at semihalf.com>

>
> Furthermore, I wonder if it can be backported to stable, and to what extent backporting it would break the ABI/API.
>


--
Best Regards,
Stanisław Kardach