On 30.11.2013, at 17:30, Alexander Graf <agraf@xxxxxxx> wrote: > > On 09.11.2013, at 12:04, Paul Mackerras <paulus@xxxxxxxxx> wrote: > >> From: Anton Blanchard <anton@xxxxxxxxx> >> >> Add support for the H_SET_MODE hcall so we can select the >> endianness of our exceptions. >> >> We create a guest MSR from scratch when delivering exceptions in >> a few places. Instead of extracting LPCR[ILE] and inserting it >> into MSR_LE each time, we simply create a new variable intr_msr which >> contains the entire MSR to use. >> >> Modified by mikey to use a case statement so we can add more >> h_set_mode calls more easily later. >> >> Modified by paulus to call kvmppc_update_lpcr and take kvm->lock. > > Please rework this so that > > 1) H_SET_MODE becomes a multiplexer similar to H_RTAS. By default all H_SET_MODE hypercalls go to user space and get handled there. User space can enable certain calls to be handled directly by KVM instead > 2) vcpus get a new ioctl (ENABLE_CAP maybe? Ah, we had an idea a while back to make this a ONE_REG on LPCR, with KVM filtering out bits it doesn't want to see modified, right? That should work just fine here. 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
