Bug#649211: linux-image-486: /sys/devices/system/cpu/cpu0/crash_notes and no topology

[Ben Hutchings <ben@decadent.org.uk>]

On Fri, Nov 18, 2011 at 10:25:39PM +0100, Marcus Osdoba wrote:
> Package: linux-image-486
> Version: 3.1.1
> Severity: important
> 
> Hi,
> I have tested virt-manager on my Debian Squeeze on several installations.
> Unfortunatly it does not work with 486 variant of the kernel [1]. When running
> the 686 variant, the topology is found in /sys/devices/system/cpu/cpu0/ , but
> not with 486 [2].
 
The 486 flavour only supports a single processor (since all SMP-
capable processors also support PAE) so the CPU topology is never
very interesting and the code to expose it in sysfs is not built.
Maybe it should be, for consistency.

[...]
> The 486 kernel from wheezy and sid (3.0.0 and 3.1.1) didn't boot proper on my
> X40, but in VirtualBox, I was able to verify, that these versions still don't
> show cputopology in /sys/devices/system.
 
This is far more important.  Please can you explain further how it
fails.  Does it hang or crash?  Can you provide the kernel log
messages?  (Use netconsole or boot without the 'quiet' option and send
a photo of the screen.)

Ben.

-- 
Ben Hutchings
We get into the habit of living before acquiring the habit of thinking.
                                                              - Albert Camus