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 <jjhe...@linux.vnet.ibm.com>
---
docs/formatdomain.html.in | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/docs/formatdomain.html.in b/docs/formatdomain.html.in
index 9218eec..b7c1e87 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 <code>feature</code> elements.</dd>
+ be changed using <code>feature</code> 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 will very likely hang or
+ crash upon resuming execution on the destination host.</dd>
</dl>
In both <code>host-model</code> and <code>host-passthrough</code>
--
2.7.4
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