SRU request for LP#239666

[Tim Gardner]

Wang, Yong Y wrote:
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/239666
> 
> SRU justification:
> 
> Impact: Current 64 bit MCE reporting code in Hardy 2.6.24 kernel
> hardcodes bank limitation as 6 and this is not an issue for processors
> with <=6 MCE banks. But for latest processors, e.g. Dunnington, with
> more than 6 MCE banks, additional MCE banks available in processor
> hardware are not enabled to record hardware error information which is
> extremely helpful for diagnostics.
> 
> For those who do not know what MCA & MCE are, here are some nice
> documents:
> 1. http://one.firstfloor.org/~andi/mce.pdf
> 2. kernel-source-dir/Documentation/x86_64/machinecheck
> 
> Original patch can be found at http://lkml.org/lkml/2008/5/8/412.
> 
> Fix is available below:
> 
> The following changes since commit
> cafcac43a64ef93b5929ec8d88103761862474d2:
>   Amit Kucheria (1):
>         UBUNTU: LPIA: More conservative culling of LPIA config
> 
> are available in the git repository at:
> 
>   git://kernel.ubuntu.com/ywang/ubuntu-hardy.git master
> 
> Yong Wang (1):
>       UBUNTU: x86: Remove 6 bank limitation in 64 bit MCE reporting code
> 
>  arch/x86/kernel/cpu/mcheck/mce_64.c |   20 ++++++++++++--------
>  1 files changed, 12 insertions(+), 8 deletions(-)
> 
> -Yong
> 

I notice that this disappeared from your git repository. I was also
reviewing the upstream discussion, and I don't think this issue is
completely resolved.

-- 
Tim Gardner tim.gardner at ubuntu.com