On 10/26/18 1:54 AM, Dongli Zhang wrote: > If dom0 (or any domain) is happy, although it could try to exchange all its > continuous dma pages back to xen hypervisor. From the perspective of each > domain, they always would like to keep as much continuous dma page as > possible. > > I am thinking something different. If there is malicious domU keep exchanging > memory and allocating continuous pages from xen hypervisor, will the > continuously dma pages be used up (sort of DoS attack)?
This is a problem. > > I am not sure if there is anything in xen hypervisor to prevent such behavior? I'm not sure but I guess it hard to prevent it, xen hypervisor could not identify if the requirement is reasonable or no. Maybe Xen reserve some low memory for guest start? Thanks, Joe _______________________________________________ Xen-devel mailing list [email protected] https://lists.xenproject.org/mailman/listinfo/xen-devel
