Messages in this thread | | | Date | Mon, 31 Aug 2009 14:53:49 +0200 | From | Andreas Herrmann <> | Subject | [PATCH 0/5 v6] x86: Adapt CPU topology detection for AMD Magny-Cours |
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Hi,
Another version of patches to fix topology issues for AMD multi-node processors. This time w/o introduction of new /sysfs attributes or additional log messages. It is just the pure stuff that is needed to fix some oddities that occur when Linux is booted on Magny-Cours.
Please apply the patches. They should go into .32.
Users who are interested in which CPUs belong to the same internal node have to check shared_cpu_map of L3 cache (i.e. /sys/devices/system/cpu/cpuXY/cache/index3/shared_cpu_map or /sys/devices/system/cpu/cpuXY/cache/index3/shared_cpu_list)
Boris might be interested in cpuinfo_x86->cpu_node_id. I use it to store the entire NodeId of AMD CPUs. That should be convenient enough to find out the northbridge of a CPU in the EDAC driver.
The scheduler stuff is in flux in general and I don't expect that scheduler gets fixed for Magny-Cours with .32. So be aware that changing to power savings scheduling might bring down your multi-node processor system.
Regards, Andreas
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