On Mon, Oct 04, 2021 at 01:03:27PM -0400, Matthew Miller wrote: > Hi all! I just got back from Open Source Summit, several of the talks I > found interesting were on RISC-V -- a high-level one about the > organizational structure, and Drew Fustini's more technical talk. > > In that, he noted that there's a Fedora build *, but it isn't an official > Fedora arch. As I understand it, the major infrastructure blocker is simply > that there isn't server-class hardware (let alone hardware that will build > fast enough that it isn't a frustrating bottleneck). We have avoided using emulation in the past because we would be chasing bugs in our emulation that aren't in real hardware and vice versa. How good is the emulation support? Do we know/have people who can fix things in it when we hit them? Tools folks: is emulation an option here? Or do we still forbid it? > So, one question is: if we used, say, ARM or x86_64 Amazon cloud instances > as builders, could we build fast enough under QEMU emulation to work? We > have a nice early advantage, but if we don't keep moving, we'll lose that. > > But beyond that: What other things might be limits? Are there key bits of > the distro which don't build yet? Is there a big enough risc-v team to > respond to arch-specific build failures? And, do we have enough people to do > QA around release time? Well, one big thing is that it's been a while since we had any secondary arches and it's unclear how they would work today. In the distant past secondary arches had their own koji and builders and composes and releases and used koji-shadow to try and match up with primary koji. This was basically more than a full time job for someone and I am sure koji-shadow has atrophied in recent years, but perhaps at least some subset could be made to work again. On the other hand we could just add it into primary koji, but then it really really has to keep up or it's going to block everything else. So, probibly a 'secondary' koji and builders to start with to bootstrap and to gather info on how hard it is to keep up and good emulation is would be worthwhile, but it's gonna need some dedicated work. Perhaps we could get a up to date status report from folks working on this, answering such questions as: * How good is emulation support * What would it take to keep up with the other arches? Is that possible? * What device(s) would we want to target and could we get sufficent numbers of them for QA and devel folks to debug problems and test? * Are there folks who can bootstrap/shepard the koji shadowing process? I think RISC-V is pretty exciting, and I am happy to help as much as I can with adding it in. I think there's likely to be a lot of interest/growth in coming years for it. kevin
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