>>> On 14.01.16 at 09:25, <roger....@citrix.com> wrote: > El 13/01/16 a les 17.36, Jan Beulich ha escrit: >>>>> On 13.01.16 at 13:32, <roger....@citrix.com> wrote: >>> The HVMlite series removed the initialization of the emulated PIT for PV >>> guests, but the handler was still reachable, which means a PV guests can >>> crash Xen if it pokes at IO ports 0x42, 0x43 or 0x61. Completely remove the >>> PV PIT handler and move the PIT initialization to HVM guests only. >> >> As said on IRC - this is needed for Dom0 to be able to drive the >> PC speaker. You'll need to provide a fix for the suppressed >> initialization instead, at least for Dom0. (As an aside, your patch >> orphans hwdom_pit_access().) > > Thanks for the clarification. AFAICT I can leave the usage of > hwdom_pit_access for Dom0, and completely remove PIT access for DomU, is > that right?
I don't think so - see the explanation Tim gave on IRC. Afaict the mention of BIOS here isn't related to a virtual BIOS, but to that of a passed through graphics card. Jan _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
