On Wed, 2023-03-08 at 17:42 +0000, Alex Bennée wrote: > > David Woodhouse <dw...@infradead.org> writes: > > > From: David Woodhouse <d...@amazon.co.uk> > > > > The kernel in Fedora 31 doesn't support 'xen_no_vector_callback' on > > its command line, so add a slightly newer version as a prelude to > > enabling avocado tests for Xen guests. > > Why slightly newer rather than current release? > > Our existing Fedora guest builds cause all sorts of timeout issues > running under TCG and seem particularly heavyweight considering the > coverage we manage to get.
Yeah, I spent a happy afternoon playing with this; I think you may have observed some of it on IRC. Although I kept some of the naughtier words to my side of the keyboard. From memory... I tried Fedora 37 and eventually got that to *boot* (hint: rootflags=subvol=root) although it concerned me that it wasn't yet at the URL containing /archive/ so I wondered if adding it at its current URL might not work in the long term. And then cloudinit didn't seem to work on it (the finalize step failed in the guest IIRC). I tried Fedora 36 and cloudinit *did* work there, and it was in basically the same /pub/archive/fedora/ location so all that made me happier... but 'dnf install xen-runtime' didn't work, which I was using in my tests at that point to install the `xenstore-ls` binary. And in fact dnf didn't seem to find *anything* useful at all in the repositories which were configured in the Fedora Cloud 36 image. So I tried Fedora 34, which is the first to have the 'xen_no_vector_callback' option that I'd added in the 5.12 kernel. And when that worked, I declared all the above to be "Someone Else's Problem". The fact that it didn't boot with `-smp 4` was clearly *my* problem, but the code was already merged upstream at that point, so fixing what turned out to be the I/OAPIC migration bug ended up being my top priority. Now, I've dropped the dnf invocation because now the second PR has been submitted I've switched it to use xen-disk anyway, and that's a good enough exercise for both xenstore and event channel interrupts. So it probably *could* move to Fedora 36, and the fact that the intel- iommu test wouldn't work on Fedora 36 could remain Someone Else's Problem. :) Please advise.
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