[PATCH 0/1] UBUNTU: SAUCE: x86: mtrr: don't modify RdDram/WrDram bits of fixed MTRRs

[Stefan Bader]

Tim Gardner wrote:
> TJ wrote:
>> LP #292619 https://launchpad.net/bugs/292619
>>
>> This is a cherry-pick from x86-tip that should land for mainline
>> 2.6.29.1. It resolves kernel panics during boot for SMP AMD CPU systems.
>>
>> The cause is the MTRRs for the boot CPU (BP) and additional CPUs (AP)
>> being modified by Linux for fixed MTRRs - in part because BIOS doesn't
>> clear SYSCFG[MtrrFixDramModEn].
>>
>> The affected systems boot only using acpi=ht, acpi=off or when the
>> kernel is built with CONFIG_MTRR=n.
>>
>> I've cherry-picked the x86-tip commit 3ff42da5048649 from
>>
>> git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-tip.git
>>
>> It applies cleanly to Jaunty.
>>
>> LP #292619 reports this issue since 2.6.24-19-server so if the Jaunty
>> patch solves the user's issue this patch would be a candidate for Hardy
>> and Intrepid SRUs.
>>
>>

Tim, given positive feedback for Jaunty (or even now), can you create tasks for 
Intrepid and Hardy and assign the to me?


>>
>>
> 
> Applied
> 
> https://bugs.edge.launchpad.net/ubuntu/+source/linux/+bug/292619/comments/9


-- 

When all other means of communication fail, try words!