Re: [Xen-devel] pvgrub2 is merged

[Samuel Thibault]

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.

Samuel