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


  • To: Juergen Gross <jgross@xxxxxxxx>, Andy Smith <andy@xxxxxxxxxxxxxx>
  • From: Hans van Kranenburg <hans@xxxxxxxxxxx>
  • Date: Mon, 20 Aug 2018 18:01:07 +0200
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  • Cc: xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>, "xen-users@xxxxxxxxxxxxxxxxxxxx" <xen-users@xxxxxxxxxxxxxxxxxxxx>
  • Delivery-date: Mon, 20 Aug 2018 16:01:21 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
  • Openpgp: preference=signencrypt

On 08/17/2018 06:09 AM, Juergen Gross wrote:
> On 17/08/18 00:33, Andy Smith wrote:
>> Hi Juergen,
>>
>> [...] 
>> If so, could the final removal of 32-bit PV in the Linux kernel be
>> held off until there is:
>>
>> 1) a kernel shipping in Debian stable, Ubuntu LTS and CentOS that
>>    boots under PVH, and;
>>
>> 2) support in grub2 so I can build a grub image that boots under
>>    PVH?
> 
> I think this is a reasonable request.
> 
>> If grub PVH support is not going to happen, what is the roadmap for
>> user-specified guest kernels under PVH?
> 
> I have a patch series lying around for grub2 PVH support. It requires
> some rework and another kernel enhancement. I'll try to resume work on
> the patches soon.

+1, Yes please!

Do I understand correctly ('another kernel enhancement') that you found
more things which need to be done than the 32-bit memory map limitation
issue at the grub side?

>> [...]
Thanks,
Hans

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