From: Jason J. Herne Date: Fri, 9 Dec 2016 19:38:35 +0000 (-0500) Subject: docs: document cpu host-passthrough migration issue X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=256f6b18261ff41d28dca5d98c82792a9c5ed65a;p=libvirt.git docs: document cpu host-passthrough migration issue Documents in formatdomain.html that when migrating a guest defined with the host-passthrough CPU model from a machine that is running on a newer CPU model than the destination machine's CPU model, it is very likely that the guest will crash upon arrival. Signed-off-by: Jason J. Herne --- diff --git a/docs/formatdomain.html.in b/docs/formatdomain.html.in index 9646782828..f7bef51dec 100644 --- a/docs/formatdomain.html.in +++ b/docs/formatdomain.html.in @@ -1292,7 +1292,11 @@ understand. Though the downside of this mode is that the guest environment cannot be reproduced on different hardware. Thus, if you hit any bugs, you are on your own. Further details of that CPU can - be changed using feature elements. + be changed using feature elements. Migration of a guest + using host-passthrough is dangerous if the source and destination + hosts are not identical in both hardware and configuration. If such + a migration is attempted then the guest may hang or crash upon + resuming execution on the destination host. In both host-model and host-passthrough