System locks up with SMP kernel, but not regular kernel... smp used to work fine.

[Jerry DeLisle]

David Hoffman wrote:
> On 4/15/05, David Hoffman <dhoffman2004 at gmail.com> wrote:
> 
>>>You may want to check the release notes for the kernel.  I know they
>>>have been working on the HyperThreading thing for some time.  I'm not
>>>keeping track; but, I believe there may be an issue with using the SMP
>>>kernel with a P4.
>>>I usually think SMP works better with multiple CPUs.  HyperThreading
>>>is really a trick more than multiple CPUs.
> 
> 
> I did see something in the notes about changes to ACPI, but I can't
> seem to find anything specific that indicates anything that addresses
> issues with HyperThreaded P4s. Anyone have a link to notes that
> discuss this?
> 
I suggest that you file a bug report with redhat bugzilla.  Someone 
should take a closer look at this, especially if it is kernel related. 
Which it may not be but one must find out.  It could be udev related for 
example.