Re: [Xen-devel] pvgrub2 is merged

[Ian Campbell]

On Mon, 2013-12-02 at 11:37 +0100, Samuel Thibault wrote:
> Ian Campbell, le Mon 02 Dec 2013 09:48:07 +0000, a écrit :
> > On Fri, 2013-11-29 at 21:44 +0400, Andrey Borzenkov wrote:
> > > I guess this question is better asked on xen-devel. Assuming we have 64
> > > bit dom0 and try to boot 32 bit domU. Is it possible to start with
> > > loading 64 bit grub that loads 32 bit kernel and jumps to it? If yes
> > > (and in other direction too) situation becomes relatively simple.
> > 
> > AIUI it is not in general possible for a 32-bit PV guest to convert
> > itself to 64-bit or vice versa,
> 
> Indeed.  At the time of PV-grub1, we discussed about making it possible,
> but that'd be quite complex and bug-prone, so we preferred not to
> implement it.

I thought we'd concluded "impossible", but yeah ;-)

Ian.