Il 16/05/2013 11:28, Vadim Rozenfeld ha scritto: >>>>> > > > > + case HV_X64_MSR_REFERENCE_TSC: { >>>>> > > > > + u64 gfn; >>>>> > > > > + unsigned long addr; >>>>> > > > > + u32 tsc_ref; >>>>> > > > > + gfn = data >> HV_X64_MSR_HYPERCALL_PAGE_ADDRESS_SHIFT; >>>> > > > Shouldn't you check HV_X64_MSR_TSC_REFERENCE_ENABLE here? >>> > > >>> > > Yes, I have this check added in the second patch. >>> > > >> > Move it here please. > OK, will do it. >> > >>>> > > > >>>>> > > > > + addr = gfn_to_hva(kvm, gfn); >>>>> > > > > + if (kvm_is_error_hva(addr)) >>>>> > > > > + return 1; >>>>> > > > > + tsc_ref = 0; This should write 0xFFFFFFFF. Paolo -- 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