kernel news – 25.09.2012

Posted: September 25, 2012 in kernel

-Konrad Rzeszutek Wilk has a Xen setup change:

I’ve one fix for which I got the Tested-by right after I sent you a git pull on
Friday. If you have some extra patches for rc7, please consider pulling it.
If you don’t have any – I will just stick this in my for-v3.7.

git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen.git stable/for-linus-3.6-rc7-tag

It is a bug-fix when we run the initial PV guest on a AMD K8 machine
and have CONFIG_AMD_NUMA enabled and detect the NUMA topology from the Northbridge.

We end up in the situation where the initial domain gets too much information
and gets confused and crashes – the fix is to restrict the domain to get the
information – and we do it by just disabling NUMA on the PV guest (the hypervisor is
still able to do its proper NUMA allocations of guests). It is OK to disable the PV
guest from accessing NUMA data as right now we do not inject any NUMA node information
to the PV guests. When we do get to that point, then this patch will have to be reverted.

-Alex Williamson updates VFIO, Arnaldo Carvalho de Melo has perf/core
improvements and fixes, Chris Metcalf has a simple update for arch/tile,
just one ABI fix, and John Stultz announces alarmtimers changes for 3.7.

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