Re: [Qemu-devel] KVMs default CPU type (was: allow sysenter on 32bit guests running on vmx host)

2009-06-25 Thread Andrea Arcangeli
Hi everyone, On Thu, Jun 25, 2009 at 10:11:58AM +0200, Andre Przywara wrote: common denominator. This should be a family 15 CPU (AMD K8 or Intel P4) with a constant vendor ID (in my experiments Intel showed less problems with guests). Since 64bit Windows has a whitelist of known vendor IDs

Re: [Qemu-devel] KVMs default CPU type (was: allow sysenter on 32bit guests running on vmx host)

2009-06-25 Thread Andrea Arcangeli
On Fri, Jun 26, 2009 at 02:42:17AM +0200, Andrea Arcangeli wrote: that purely asks for troubles I think. At the same time I doubt we want to deviate much from qemu code here, this seems messy enough already without big changes to maintain in this area, and I guess this explains why kvm is only

[Qemu-devel] KVMs default CPU type (was: allow sysenter on 32bit guests running on vmx host)

2009-06-25 Thread Andre Przywara
[CCing k...@vger] Jamie Lokier wrote: Andrea Arcangeli wrote: Hi Jamie, ... It looks like it could be a KVM mis-feature. Is the changing vendor id actually useful for anything, without updating the family/model/stepping at the same time? E.g. does it make some guest things work, even