On (Fri) Aug 21 2009 [23:53:41], Andre Przywara wrote: > Glauber Costa wrote: >> On Fri, Aug 21, 2009 at 12:41 PM, Avi Kivity<avi@xxxxxxxxxx> wrote: >>> On 08/21/2009 12:34 AM, Andre Przywara wrote: >>>> In addition to the TCG based qemu64 type let's introduce a kvm64 CPU type, >>>> which is the least common denominator of all KVM-capable x86-CPUs >>>> (based on Intel Pentium 4 Prescott). It can be used as a base type >>>> for migration. >>>> >>> Typically users will want more specialized greatest common denomiator cpu >>> types; if a site has standardized on recent hardware they will want the >>> features of that hardware exposed. >>> >>> I think this is best left to management software, which has more information >>> about the migration pool. >> I believe what we want is an automatic tool that will connect to a >> list of machines,and determine which qemu cpu type we should use. > > Doesn't sound like black magic... > I already have such a basic tool. It uses ssh (with pubkey) to connect > to the target machine, then uses dd on /dev/cpu/0/cpuid to get the CPUID > info. This requires cpuid.ko to be loaded and the permissions on the > device file to be sufficient (the appropriate udev patch is already > upstream). It then computes the least common denominator bits from > several machines. I had such patches as well. I think I sent them on qemu-devel. When do you plan on sending your patches out? Amit -- 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
