Re: [Xen-devel] [PATCH] libxc: x86: ensure that the initial mapping fits into the guest's memory

["Jan Beulich" <jbeulich@xxxxxxxx>]

>>> Ian Campbell <Ian.Campbell@xxxxxxxxxx> 01/04/13 5:53 PM >>>
>libxc: x86: ensure that the initial mapping fits into the guest's memory
>
>In particular we need to check that adding 512KB of slack and
>rounding up to a 4MB boundary do not overflow the guest's memory
>allocation. Otherwise we run off the end of the p2m when building the
>guest's initial page tables and populate them with garbage.

Sadly our testing found this to cause SLE11 SP2 PV guests to not start
anymore (in its 4.1.x backported incarnation). I didn't get around yet to
check whether in the (apparently trivial) backport I overlooked something;
will do as soon as I get to the office.

Jan


_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
http://lists.xen.org/xen-devel