From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ian Campbell Subject: Re: Migration of a 32-bit PV-Guest Date: Wed, 21 Jan 2015 16:54:35 +0000 Message-ID: <1421859275.4628.22.camel@citrix.com> References: <54BFC5F6.5070709@citrix.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <54BFC5F6.5070709@citrix.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Andrew Cooper Cc: Vasco Fachin , xen-devel@lists.xen.org List-Id: xen-devel@lists.xenproject.org On Wed, 2015-01-21 at 15:29 +0000, Andrew Cooper wrote: > > I tested the same hypercall with a 32bit version of MiniOS and it > > crashes as well with the same output. Then I tried it with a 64bit > > version of MiniOS and seems to work just fine. > > > > Somehow I cannot find any 32bit paravirtual machine that could be > > migrated. Does anybody know if such a system exists? > > Any 32bit Linux guest will successfully migrate. It's seems pretty likely that the OP was talking about 32bit *minios* domains, not Linux ones. I'm not sure if mini-os supports migration at all. I do recall the openmirage people fixing some stuff in mini-os in that regard, but I'd expect that was for 64-bit since I expect that is what they use. Vasco, you might look at what the mirage folks did (look in xen.git and there trees) and see if it applies to 32-bit, otherwise I'm afraid you may be stuck implementing (or at least fixing) migration in mini-os yourself. Ian.