On 01/26/2010 08:26 AM, Avi Kivity wrote:
On 01/26/2010 04:22 PM, Anthony Liguori wrote:
On 01/26/2010 08:15 AM, Avi Kivity wrote:
On 01/26/2010 04:13 PM, Anthony Liguori wrote:
Me too, especially as the whole stack is involved, and qemu is the topmost part from our perspective (no doubt libvirt will want to integrate that functionality as well).


I'm not sure I agree. It would use no code from qemu and really benefit in no way from being part of qemu. I don't feel that strongly about it though.


It would need to know which cpuid bits qemu supports. Only qemu knows that.

I'm not sure I understand why.  Can you elaborate?


If qemu doesn't recognize -cpu qemu64,+nx, then no amount of hardware and kvm.ko support will allow the user to enable nx in a guest.

Does -cpu host filter out flags that we don't know about? I'm pretty sure it doesn't. Since we're planning on moving to -cpu host by default for KVM, does it really matter?

Oh, I was under the impression that the tool was meant to be software agnostic. IOW, here are all the virt features your hardware supports.

Regards,

Anthony Liguori



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