Re: [Xen-users] Soft Lock on cpu problem Still???

[Pasi Kärkkäinen <pasik@xxxxxx>]

On Tue, May 08, 2007 at 09:01:18AM +1000, Xin Chen wrote:
> Hi,
> 
> Thanks for that!
> 
> Just wondering, isn't kernel-xen a product of XenSource? If the redhat 
> kernel-xen is not working, can I just use the XenSource one? Is the 
> XenSource Kernel-Xen not working in fedora, so redhat has to develop it 
> themselves based on XenSource one. or did XenSource ask redhat to 
> develop the kernel-xen for fedora? I just don't understand. As this bug 
> has been fix in XenSource, right? I was thinking about not using the 
> redhat kernel-xen, use XenSource kernel-Xen may fix the problem?? Can 
> anyone help me clear about this? Sorry for my english..
> 
> Now I am gonna to downgrade the kernel to 2.6.19. Thank Pasi :)
> 

kernel-xen in Fedora is part of the distribution, it's maintained by Fedora
(Redhat) developers.

Fedora currently ships kernel-xen-2.6.20, which is a lot newer than the one
xensource is shipping (2.6.18). That means fedora developers have ported the
xen stuff for the newer kernel.. and there seems to be some bugs in it.

And yes, you should be able to use the xensource kernels with the fedora xen
hypervisor.. just pick up the PAE kernels, as fedora hypervisor is PAE. 

-- Pasi

> cheers,
> x
> 
> Pasi Kärkkäinen wrote:
> 
> >On Mon, May 07, 2007 at 04:08:43PM +1000, Xin Chen wrote:
> > 
> >
> >>Hi All,
> >>
> >>I have a 'Soft lock on cpu problem'.  The system crushed. First, it 
> >>become slow... and then not responding then need to press reset.....
> >>
> >>I have searched it from google and it seems a bug which has alreay been 
> >>fixed .
> >>However, I use yum update kernel-xen xen, and got the latest one. It 
> >>still got the problem.
> >>
> >>My system is Fedora 6. Tha latest kernel is 2.6.20-1.2948.*fc6xen. *
> >>My Machine is:
> >>
> >>Quad-core CPU 1.6
> >>Radeon Video Card
> >>4G Memory
> >>
> >>The system is running fine when started without xen.
> >>
> >>I suspect that maybe the latest kernel didn't come with the bug patch?? 
> >>Do I need to apply the patch myself? Is it hard to do that ??
> >>
> >>By the way, for my guest config file, I use vcpu=1, I don't know if I 
> >>changed to 4 will help or not?
> >>
> >>Thanks for your help! I really need help. Please.
> >>
> >>
> >>   
> >>
> >
> >Fedora is shipping known-to-be-broken kernel-xen packages.. I don't why, 
> >but
> >they seem to unwilling to fix them. Same bug in fc6/fc6/fc7.
> >
> >kernel-xen.2.6.19 works ok.. downgrade to it and it should be fine.
> >
> >bug report: https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=234008 
> >
> >-- Pasi
> > 
> >
> 

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