[PATCH 0/3] Kernel handling of Dynamic Logical Partitioning
Nathan Fontenot
nfont at austin.ibm.com
Wed Nov 25 18:07:17 EST 2009
Paul Mackerras wrote:
> Nathan Fontenot writes:
>
>> The Dynamic Logical Partitioning (DLPAR) capabilities of the powerpc pseries
>> platform allows for the addition and removal of resources (i.e. cpus,
>> memory, pci devices) from a partition. The removal of a resource involves
>> removing the resource's node from the device tree and then returning the
>> resource to firmware via the rtas set-indicator call. To add a resource, it
>> is first obtained from firmware via the rtas set-indicator call and then a
>> new device tree node is created using the ibm,configure-coinnector rtas call
>> and added to the device tree.
>>
>> The following set of patches implements the needed infrastructure to have the
>> kernel handle the DLPAR addition and removal of cpus (other DLPAR'able items
>> to follow in future patches). The framework for this is to create a set of
>> probe/release sysfs files that will facilitate arch-specific call-outs to
>> handle addition and removal of cpus to the system.
>
> Nice explanation, but the 0/3 of the series doesn't go into git.
> Could you rework some/all of this into the commit message for patch
> 1/3 so it gets stored permanently with these patches in git?
>
> Thanks,
> Paul.
Thanks for all the feedback.
Version two of the patches are on their way based on your comments.
-Nathan Fontenot
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