Re: [Xen-devel] Build vmlinuz-2.6.29-rc5-tip

[Pasi Kärkkäinen <pasik@xxxxxx>]

On Wed, Feb 18, 2009 at 02:39:44PM -0800, Jeremy Fitzhardinge wrote:
> Pasi Kärkkäinen wrote:
> >On Tue, Feb 17, 2009 at 10:40:54AM -0800, Jeremy Fitzhardinge wrote:
> >  
> >>Pasi Kärkkäinen wrote:
> >>    
> >>>On Tue, Feb 17, 2009 at 05:31:57AM -0800, Boris Derzhavets wrote:
> >>> 
> >>>      
> >>>>Hardware config:-
> >>>>C2D E8400, 8 GB RAM, ASUS P5K Premium/WIFI (Intel P35+Intel ICH9R),
> >>>>2x250 SATA Seagate Barracuda (no RAID). Bios settings for ICH9R - AHCI.
> >>>>Details here:-
> >>>>http://bderzhavets.wordpress.com/2009/02/17/setup-xen-unstable-dom0-via-2629-rc5-pv_ops-enabled-kernel-on-intel-sataahci/
> >>>>
> >>>>   
> >>>>        
> >>>Thanks!
> >>>
> >>>So it seems you're running 64 bit dom0 OS/hypervisor.. 
> >>>
> >>>64 bit seems to work better atm than 32 bit.. 
> >>> 
> >>>      
> >>I tend to focus on 64-bit, and Ian Campbell has been looking at 32-bit.  
> >>In theory there shouldn't be all that much difference between them.  
> >>There have been a few issues, but they're sharing 90+% of the code.  (In 
> >>practice I'm interested in any bug reports, esp comparing 32 and 64-bit 
> >>behaviour).
> >>
> >>    
> >
> >I'm testing 32bit PAE dom0 on 32bit PAE hypervisor. 
> >
> >Today, with 2.6.29-rc5, I managed to boot my dom0 into login prompt! 
> >I haven't been able to get this working earlier.. congratulations!
> >
> >I had to use 'noapic' dom0 kernel parameter though.. without 'noapic' I'm 
> >seeing
> >the same IRQ problems with ata_piix than earlier.
> >  
> 
> Hm, interesting.  One change I made in the last few days was making gsis 
> map 1:1 with irqs, like the native kernel.  I wonder if that helps in 
> your case.  That said, I'm not quite sure how its working with noapic; I 
> would have thought that it wouldn't go through the Xen-hooked paths that 
> way...
> 
> Oh, you're using ahci, not piix - and that works with noapic.  Hm, I 
> should try that.
> 

I have ahci controller onboard, but I'm not using it atm. 

The (only) disk I have is connected to ata_piix controller..


> Can you start xend and a domain?
> 

I'll try that today!

> >My dom0 kernel config:
> >http://pasik.reaktio.net/xen/pv_ops-dom0-debug/config-2.6.29-rc5-tip-dom0
> >
> >My grub.conf:
> >http://pasik.reaktio.net/xen/pv_ops-dom0-debug/grub.conf
> >
> >Working dom0 bootlog with 'noapic':
> >http://pasik.reaktio.net/xen/pv_ops-dom0-debug/pv_ops-dom0-bootlog-13-xen331-linux-2.6.29-rc5-noapic.txt
> >  
> What does your /proc/interrupts look like in this case?
>

Will check.
 
> >Failing dom0 bootlog (without 'noapic'):
> >http://pasik.reaktio.net/xen/pv_ops-dom0-debug/pv_ops-dom0-bootlog-12-xen331-linux-2.6.29-rc5.txt
> >  
> 
> Do you think you could boot from a usb device or something and see if 
> you can get /proc/interrupts for this as well?
> 

If I have enough time today I'll try making some USB root device..

-- Pasi

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