Re: [Xen-devel] Re: 1850/2850 hangs under I/O load

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

> > Are you sure you fixed up unstable properly, and definitely were 
> > running the fixed up version? It would be quite surprising if that 
> > fix worked for xen2 but not for xen3!
> > I just did some tests myself, and fixing that one use of set_affinity 
> > in pirq_guest_bind ought to be sufficient to get unstable working on 
> > your boxes.
> I also just added a new boot parameter 'noirqbalance' to the 
> 2.0-testing and unstable repositories. If you're using the latest 
> version of either of those then just add that to Xen's command line 
> instead of manually patching the code.
> You can tell if you have a recent enough source tree: 
> xen/arch/x86/irq.c will have a new opt_noirqbalance variable declared 
> right at the top.
I've also checked in automatic disabling of IRQ balancing/affinity in 
the unstable tree, so with the latest repository you shouldn't even 
have to add an explicit boot parameter.
If you have a serial line attached then you should see Xen print:
 XEN: Platform quirk -- Disabling IRQ balancing/affinity.

at some point during boot of domain0.

 -- Keir


_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel