Re: [Xen-devel] [PATCH 4/5] x86/PV: remove the emulated PIT

2016-01-14 Thread Jan Beulich
>>> On 14.01.16 at 15:03, wrote: > What about we do the following: enable the PIT for PV(H) guests > (DomU/Dom0), and completely remove it for HVMlite guests for the moment? > > We might consider enabling it for HVMlite, but the plan is that this > could be done on a per-domain basis using the fl

Re: [Xen-devel] [PATCH 4/5] x86/PV: remove the emulated PIT

2016-01-14 Thread Roger Pau Monné
El 14/01/16 a les 13.38, Jan Beulich ha escrit: On 14.01.16 at 11:59, wrote: >> El 14/01/16 a les 10.11, Jan Beulich ha escrit: >> On 14.01.16 at 09:25, wrote: El 13/01/16 a les 17.36, Jan Beulich ha escrit: On 13.01.16 at 13:32, wrote: >> The HVMlite series removed th

Re: [Xen-devel] [PATCH 4/5] x86/PV: remove the emulated PIT

2016-01-14 Thread Jan Beulich
>>> On 14.01.16 at 11:59, wrote: > El 14/01/16 a les 10.11, Jan Beulich ha escrit: > On 14.01.16 at 09:25, wrote: >>> El 13/01/16 a les 17.36, Jan Beulich ha escrit: >>> On 13.01.16 at 13:32, wrote: > The HVMlite series removed the initialization of the emulated PIT for PV > gues

Re: [Xen-devel] [PATCH 4/5] x86/PV: remove the emulated PIT

2016-01-14 Thread Roger Pau Monné
El 14/01/16 a les 10.11, Jan Beulich ha escrit: On 14.01.16 at 09:25, wrote: >> El 13/01/16 a les 17.36, Jan Beulich ha escrit: >> On 13.01.16 at 13:32, wrote: The HVMlite series removed the initialization of the emulated PIT for PV guests, but the handler was still reachable,

Re: [Xen-devel] [PATCH 4/5] x86/PV: remove the emulated PIT

2016-01-14 Thread Jan Beulich
>>> On 14.01.16 at 09:25, wrote: > El 13/01/16 a les 17.36, Jan Beulich ha escrit: > On 13.01.16 at 13:32, 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

Re: [Xen-devel] [PATCH 4/5] x86/PV: remove the emulated PIT

2016-01-14 Thread Roger Pau Monné
El 13/01/16 a les 17.36, Jan Beulich ha escrit: On 13.01.16 at 13:32, 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. Complet

Re: [Xen-devel] [PATCH 4/5] x86/PV: remove the emulated PIT

2016-01-13 Thread Jan Beulich
>>> On 13.01.16 at 13:32, 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 ini

[Xen-devel] [PATCH 4/5] x86/PV: remove the emulated PIT

2016-01-13 Thread Roger Pau Monne
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. Signed-of