On 31.01.2013, at 19:43, Scott Wood wrote: > On 01/31/2013 12:21:07 PM, Alexander Graf wrote: >> How about something like this? Then both targets at least suck as much :). > > I'm not sure that should be the goal... > >> Thanks to e500mc's awful hardware design, we don't know who sets the MSR_DE bit. Once we forced it onto the guest, we have no change to know whether the guest also set it or not. We could only guess. > > MSRP[DEP] can prevent the guest from modifying MSR[DE] -- but we still need to set it in the first place. > > According to ISA V2.06B, the hypervisor should set DBCR0[EDM] to let the guest know that the debug resources are not available, and that "the value of MSR[DE] is not specified and not modifiable". So what would the guest do then to tell the hypervisor that it actually wants to know about debug events? Alex -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
