Re: [patch 00/21] Xen-paravirt: Xen guest implementation for paravirt_ops interface

Zachary Amsden
2007-02-21T18:55:40Z

Christoph Lameter wrote:
> On Sat, 17 Feb 2007, Andi Kleen wrote:
>
>
>> That was always its intention. It's not a direct interface to a hypervisor,
>> but an somewhat abstracted interface to a "hypervisor driver"
>>
>
> I thought that hypervisor driver was some binary blob that can be directly
> accessed via paravirt_ops?
>

There are no more binary blobs being used by paravirt-ops hypervisors.
I prefer the term "open hypercode layer".

>> But you're right that there are currently still quite a lot of hooks
>> being added. I plan to be much more strict on that in the future.
>>
>
> And it seems that the hooks are not generic but bound to a particular
> hypervisor. Should the Xen specific stuff not be in the binary blob?
>

Xen doesn't use a hypercode layer, and there is no way to do what they
need to do without hooks in the kernel.

Zach