[Libvir] [RFC] Check host's minimum memory.

Daniel P. Berrange berrange at redhat.com
Thu Mar 8 13:03:48 UTC 2007

On Thu, Mar 08, 2007 at 05:33:45PM +0900, Atsushi SAKAI wrote:
> Hi, Dan
>  I and Sunou investivate this issue.
>   virsh setmem commands directry writes xenstore(memory/target) 
> by using xenStoreDomainSetMemory()@xs_internal.c.
> This data (memory/target) is read by PVdomain balloon driver directly.
> As you know, xenstore just pass through the data between inter domain.
> For this reason, virsh setmem must protect at xs_internal.c not on Xen-side

Ahhh, yes that makes sense.  So looks like we have no choice but to 
put some protection in libvirt here. Lets have a patch which applies
to  xs_internal.c only, and protects Dom0 with a limit of 64 MB. This
avoids imposing policy on non-Dom0, or QEMU/KVM guests.

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