Re: subarchitectures and RISC-V, was Re: F39 proposal: RPM 4.19 (System-Wide Change proposal)

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On 4/19/23 07:46, Florian Weimer wrote:
* Jeff Law:

Rather than trying to track all the individual extensions and
combinations thereof, I would suggest focusing on RVI defined
profiles. Essentially they provide a set of mandatory features the
architecture must support (to be compliant with the profile).

Do at least some of these profiles form an ascending chain?
That's the plan as I understand it. *But* there are some chip vendors pushing back against some aspects of the profile plan, say for example requiring the vector extension. At least that's what I'm hearing through the grapevine.

If it were up to me, I'd let them go their own way. If they don't see the value in conforming to a profile, then that's a choice they can make, but it'll restrict their ability to leverage all the work done at the distro level.

Jeff
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