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

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Message-ID: <19213.61189.559138.936155@drongo.ozlabs.ibm.com>
Date:	Thu, 26 Nov 2009 13:59:17 +1100
From:	Paul Mackerras <paulus@...ba.org>
To:	Nathan Fontenot <nfont@...tin.ibm.com>
Cc:	linuxppc-dev@...abs.org, linux-kernel@...r.kernel.org,
	gregkh@...e.de, Ben Herrenschmidt <benh@...nel.crashing.org>
Subject: Re: [PATCH v2 1/3] Kernel DLPAR Infrastructure

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@...tin.ibm.com> 

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