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



>>> On 16.08.18 at 08:32, <christopher.w.clark@xxxxxxxxx> wrote:
> On Wed, Aug 15, 2018 at 11:17 PM, Juergen Gross <jgross@xxxxxxxx> 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
>>
>> - 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?
>>
> 
> 
> Juergen - just to be very clear about the scope here:
> * would this proposal affect the ability to use a 32-bit dom0?

If the Dom0 is to be PV - yes, of course. For the time being there's
no complete PVH Dom0 support, so if 32-bit is needed here, PV is
for now indeed the only option.

> * is this proposal to affect x86 only or also for ARM?

There's no PV on ARM.

Jan



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