>>> On 23.08.17 at 11:19, <jgr...@suse.com> wrote: > Just some thoughts on that topic from my side: > > This approach should be fine IMO for memory allocated while creating a > domain. This is basically the same as a bare metal system where the BIOS > needs some memory. > > Memory allocated during the lifetime of a domain is a different problem: > either you allow the domain to claim more memory as configured, or you > have to reserve a more or less arbitrary amount of memory to be > allocated later and eventually fail such allocations. I don't think this > approach is acceptable.
Or an interrupt gets sent to the guest telling it that it should nominate (balloon out or something similar) a page in order for another of its operations to succeed. Of course that would be limited to paravirtual operations (i.e. mostly hypercalls); allocations done while emulating something could not be handled this way. Jan _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org https://lists.xen.org/xen-devel
