Re: xen interrupt system

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

On Thu, Aug 20, 2009 at 12:46:24PM +0200, Manuel Bouyer wrote:
> On Thu, Aug 20, 2009 at 12:44:10PM +0200, Christoph Egger wrote:
> > 
> > Hi!
> > 
> > We all know, NetBSD/Xen's interrupt system needs to be reworked
> > to meet the demands for future features such as SMP, PV drivers in HVM.
> > 
> > In Xen development tree the interrupt system has been reworked which breaks
> > NetBSD/Xen Dom0 boot. No, the hypercalls did not change but
> > everything underneath. The new interrupt system in Xen enlights
> > the drawbacks of NetBSD/Xen's interrupt system in interrupt lossages,
> > timeouts and even in sudden freezes before Dom0 has the chance
> > to start the init process.
> > 
> > The situation is serious: Unless we rework the interrupt system,
> > Xen 3.3 and Xen 3.4 are the lastest Xen versions NetBSD will work with.
> 
> Do you know exactly what needs to be changed ?

BTW, for PV drivers, it doens't affect only Xen but also x86, I guess ?

-- 
Manuel Bouyer <bouyer%antioche.eu.org@localhost>
     NetBSD: 26 ans d'experience feront toujours la difference
--