Re: [Xen-devel] Future of 32-bit PV support

[Roger Pau Monné <roger.pau@xxxxxxxxxx>]

On Thu, Aug 16, 2018 at 08:17:13AM +0200, Juergen Gross wrote:
> In the Xen x86 community call we have been discussing whether anyone
> really is depending on 32-bit PV guests. We'd like to evaluate whether
> anyone would see problems with:
> 
> - deprecating 32-bit PV guest support in Xen, meaning that we'd
>   eventually switch to support 32-bit PV guests only via PV-shim from
>   Xen 4.12 or 4.13

This means 32bit PV support would be switched off by default in the
hypervisor build, but distros or individuals could still enable it
(like the build system will enable it for the shim).

> - dropping 32-bit PV support from upstream Linux kernel, resulting in
>   current 32-bit PV guests no longer being able to upgrade to the newest
>   kernel version any longer
> 
> And related to that:
> 
> - is there any Linux distribution still shipping 32-bit PV-capable
>   systems?
> 
> - what about BSD? Is 32-bit PV support important there?

FTR, NetBSD is the only BSD to have PV support, both 32 and 64bits.

Roger.

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