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xen-devel
Re: [Xen-devel] [PATCH] Move smp_num_siblings to the per-cpu data
Keir Fraser wrote:
On 20/01/2009 23:36, "Frank van der Linden" <Frank.Vanderlinden@xxxxxxx>
wrote:
Make the num_siblings CPU parameter per-CPU.
While it is unlikely that a system has a different number of siblings
for different physical CPUs, make this parameter per-CPU for
consistency, and deal with the (so far theoretical) case that this is
different per CPU package.
Signed-off-by: Frank van der Linden <Frank.Vanderlinden@xxxxxxx>
It's a pretty odd thing to decide to knock together one day. Do you have an
underlying near-term motive for adding this flexibility?
-- Keir
I originally did this as part of an extension to the MCE support
hypercall. We needed some detailed physical CPU information, plus some
MSR info. When implementing this, and extracting infro from cpu_data[],
I noticed the smp_num_siblings inconsistency, so I changed it.
The other changes will be submitted as a separate patch, after they've
been discussed with AMD & Intel.
- Frank
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