Re: [Xen-devel] [PATCH 5/8] xen/pvh: Prevent PVH guests from using PIC, RTC and IOAPIC

2016-10-14 Thread Boris Ostrovsky
On 10/14/2016 03:16 PM, Konrad Rzeszutek Wilk wrote: > On Fri, Oct 14, 2016 at 02:05:15PM -0400, Boris Ostrovsky wrote: >> Make sure they don't use these devices since they are not emulated >> for unprivileged PVH guest. > Which means they would just return 0 ? Or would it get worst since > the

Re: [Xen-devel] [PATCH 5/8] xen/pvh: Prevent PVH guests from using PIC, RTC and IOAPIC

2016-10-14 Thread Boris Ostrovsky
On 10/14/2016 03:16 PM, Konrad Rzeszutek Wilk wrote: > On Fri, Oct 14, 2016 at 02:05:15PM -0400, Boris Ostrovsky wrote: >> Make sure they don't use these devices since they are not emulated >> for unprivileged PVH guest. > Which means they would just return 0 ? Or would it get worst since > the

Re: [Xen-devel] [PATCH 5/8] xen/pvh: Prevent PVH guests from using PIC, RTC and IOAPIC

2016-10-14 Thread Konrad Rzeszutek Wilk
On Fri, Oct 14, 2016 at 02:05:15PM -0400, Boris Ostrovsky wrote: > Make sure they don't use these devices since they are not emulated > for unprivileged PVH guest. Which means they would just return 0 ? Or would it get worst since the in/out would go to the hypervisor which would kill the guest?

Re: [Xen-devel] [PATCH 5/8] xen/pvh: Prevent PVH guests from using PIC, RTC and IOAPIC

2016-10-14 Thread Konrad Rzeszutek Wilk
On Fri, Oct 14, 2016 at 02:05:15PM -0400, Boris Ostrovsky wrote: > Make sure they don't use these devices since they are not emulated > for unprivileged PVH guest. Which means they would just return 0 ? Or would it get worst since the in/out would go to the hypervisor which would kill the guest?