Re: [kvm-devel] performance with guests running 2.4 kernels (specifically RHEL3)

Avi Kivity
2008-05-28T14:57:26Z

Andrea Arcangeli wrote:
> On Wed, May 28, 2008 at 08:13:44AM -0600, David S. Ahern wrote:
>
>> Weird. Could it be something about the hosts?
>>
>
> Note that the VM itself will never make use of kmap. The VM is "data"
> agonistic. The VM has never any idea with the data contained by the
> pages. kmap/kmap_atomic/kunmap_atomic are only need to access _data_.
>
>

What about CONFIG_HIGHPTE?

--
Do not meddle in the internals of kernels, for they are subtle and quick to panic.