Re: [PATCH v2 1/3] Kernel DLPAR Infrastructure

Paul Mackerras
2009-11-26T03:00:58Z

Nathan Fontenot writes:

> The Dynamic Logical Partitioning capabilities of the powerpc pseries platform
> allows for the addition and removal of resources (i.e. CPU's, memory, and 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.
>
> This patch provides the kernel DLPAR infrastructure in a new filed named
> dlpar.c. The functionality provided is for acquiring and releasing a resource
> from firmware and the parsing of information returned from the
> ibm,configure-connector rtas call. Additionally this exports the pSeries
> reconfiguration notifier chain so that it can be invoked when device tree
> updates are made.
>
> Signed-off-by: Nathan Fontenot <nfont@austin.ibm.com>

Acked-by: Paul Mackerras <paulus@samba.org>