[PATCH v1 1/1] riscv: Add RVV memset via multiarch/IFUNC

Palmer Dabbelt palmer@dabbelt.com
Thu Oct 30 02:06:01 GMT 2025


On Wed, 29 Oct 2025 19:01:22 PDT (-0700), bergner@tenstorrent.com wrote:
> On 10/29/25 6:36 PM, Palmer Dabbelt wrote:
>> You're talking glibc-hwcaps though, right?  Jeff is saying AT_HWCAP,
>> which is busted on RISC-V (we allocated a bunch of bits early and then
>> vendors did whatever they wanted, V got specifically tied up with the
>> V-0.7.1 stuff).
>
> Yes, I was talking about glibc-hwcaps, not AT_HWCAP.

Ya, so I think last time we talked about glibc-hwcaps the basic takeaway 
was that we just didn't know what HW was going to look like, so adding a 
glibc-hwcap would be premature.  I don't think we've really ticked over 
there yet, but we might be pretty close -- I haven't really been paying 
much attention to HW announcements for the last few months, though, so 
not sure on that...


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