Re: PVH questions

[Mukesh Rathor <mukesh.rathor@oracle.com>]

On Mon, 28 Jan 2013 15:09:57 +0000
Stefano Stabellini <stefano.stabellini@eu.citrix.com> wrote:

> On Mon, 28 Jan 2013, Samuel Thibault wrote:
> > Hello,
> > 
> > I've had a look at PVH support, and I have a few questions:
> > 
> > - events are still dispatched the PV way through the callback,
> > right?
> 
> No, they are injected as an X86 vector (0xf3).
> 
> 
> > - I guess FPU errors don't trigger an INT13, so I don't need to
> > handle that?
> 
> I think that's right, but Mukesh can confirm this.
> 
> 
> > - How about the console and store MFNs from the boot info? Are they
> > still MFNs, or actually PFNs?
> 
> PFNs
> 
> 
> > - How about PV network in non-copy mode?  It used to be done
> > with a page transfer, which the frontend would free, does
> > XENMEM_decrease_reservation still use MFNs, or PFNs?
> 
> PFNs
> 
> Mukesh, did I get it right?

Yes.

> Would you be up for writing down these basic pieces of information
> regarding the PVH interface on a wiki page? 
> So that other kernel hackers like Samuel can port their favourite open
> source kernel to it?
> Maybe add something about the shared_info page and the grant_table
> too.

Sure. Lets collect questions and I'll do that after my version 2 patch
is out.

thaks,
mukesh