Re: running xen on current

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

On Thu, Apr 15, 2021 at 09:53:50AM +0100, Patrick Welche wrote:
> I have tried and failed to run xen on 3 -current/amd64 systems with
> 3 different failure modes:
> 
> 1) laptop:  xen.gz Building a PV Dom0 / ELF: not an ELF binary -> panic/reboot
> 2) desktop: XEN3_DOM0 panics including PR port-xen/55978
> 3) server:  Trampoline space cannot be allocated; will try fallback -> reboot
> 
> They are all working NetBSD-current/amd64 systems.
> 
> My conclusion was that xen is hopelessly broken, so was quite surprised
> by Greg Wood's thread about the finer points of running a guest OS, given
> that those systems won't even start the host OS.
> 
> I dug out an old desktop, and to my pleasant surprise it booted XEN3_DOM0,
> and I have managed to run some XEN3_DOMUs.
> 
> The difference between the working/broken setups seems to be that the
> working one is "BIOS" booting rather than EFI booting.
> 
> Among all your xen success stories, are any of you EFI booting?

AFAIK EFI is not yet supported by Xen (maybe this is supported by 4.15,
I've not had a chance to try yet). I have it running on fairly recent
Dell servers (in BIOS mode)

-- 
Manuel Bouyer <bouyer%antioche.eu.org@localhost>
     NetBSD: 26 ans d'experience feront toujours la difference
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