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SubjectRe: [PATCH v3 00/12] KVM: Add host swap event notifications for PV guest
On Wed, Jan 6, 2010 at 1:04 AM, Avi Kivity <avi@redhat.com> wrote:
> On 01/05/2010 05:05 PM, Jun Koi wrote:
>>
>> Is it true that to make this work, we will need a (PV) kernel driver
>> for each guest OS (Windows, Linux, ...)?
>>
>>
>
> It's partially usable even without guest modifications; while servicing a
> host page fault we can still deliver interrupts to the guest (which might
> cause a context switch and thus further progress to be made).

Lets say, in the case the guest has no PV driver. When we find that a
guest page is swapped out, we can send a pagefault
to the guest to trick it to load that page in. And we dont need the
driver at all.

Is that a reasonable solution?

Thanks,
J


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