> -----Original Message-----
> From: Adrian Schröter <[email protected]>
> Sent: 05 February 2020 11:40
> To: [email protected]; Guillaume Gardet
> <[email protected]>
> Cc: Andreas Färber <[email protected]>; [email protected]; nd <[email protected]>
> Subject: Re: [opensuse-arm] Re: New 32-bit Arm support needed for future OBS
> builds
>
> On Mittwoch, 5. Februar 2020, 11:34:00 CET Guillaume Gardet wrote:
> >
> > > -----Original Message-----
> > > From: Adrian Schröter <[email protected]>
> > > Sent: 05 February 2020 11:16
> > > To: [email protected]; Guillaume Gardet
> > > <[email protected]>
> > > Cc: Andreas Färber <[email protected]>; [email protected]; nd
> > > <[email protected]>
> > > Subject: [opensuse-arm] Re: New 32-bit Arm support needed for future
> > > OBS builds
> > >
> > > On Mittwoch, 5. Februar 2020, 11:16:02 CET Guillaume Gardet wrote:
> > > > Hi,
> > > >
> > > > As you may know, OBS has a low number of 32-bit Arm capable workers.
> > > > Some Arm servers are AArch64 only and some are still supporting 32-bit
> mode.
> > > >
> > > > The thing is new AArch64 SoC (Arm Neoverse N1) will still have the
> > > > ability to run
> > > Arm 32-bit code, but only for user space (not for kernel anymore).
> > > > So, we could still build for 32-bit Arm with those kind of
> > > > machines, but our
> > > current setup (qemu/kvm in 32-bit mode) will not work anymore.
> > > >
> > > > Here are the solutions which could be used:
> > > > * 64-bit qemu (with a 64-bit kernel) with armv6/armv7 rootfs
> > > > * 32-bit containers on aarch64 (qemu) host
> > > > * qemu without kvm: will probably be too slow
> > > >
> > > > I do not know how much work it would require to support one of
> > > > those
> > > solutions and how many packages will be confused by a 64-bit kernel.
> > >
> > > I will object against the "without KVM" approach as OBS admin, since
> > > it means you can take over the worker.
> >
> > So, against qemu without KVM (we did that in the past for armv6 on x86_64
> machines, IIRC) and against containers as well?
>
> armv6 was qemu inside KVM. That is a possible way.
That is the current state.
AFAIK, you cannot use KVM for armv6 qemu on x86_64.
Guillaume
>
> containers are not really desired security wise as well.
>
> Keep in mind that a breakage here is not only affecting the maybe-not-so-much-
> important
> armv6 distro, but really all builds in OBS.
>
> > >
> > > when you speak about qemu, you speak about user or system emulator?
> >
> > System emulator.
>
> k, will not be a very fast approach, but you know that :)
>
> --
>
> Adrian Schroeter <[email protected]>
> Build Infrastructure Project Manager
>
> SUSE Software Solutions Germany GmbH, Maxfeldstr. 5, 90409 Nuernberg,
> Germany (HRB 247165, AG München), Geschäftsführer: Felix Imendörffer
>
>
>
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