Messages in this thread | | | Date | Wed, 6 Jan 2010 12:21:29 +0200 | From | Gleb Natapov <> | Subject | Re: [PATCH v3 00/12] KVM: Add host swap event notifications for PV guest |
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On Wed, Jan 06, 2010 at 07:17:30PM +0900, Jun Koi wrote: > 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. > That's not the guest who should load the page. From guest's point of view the page is in memory.
> Is that a reasonable solution? > > Thanks, > J
-- Gleb.
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