linux-kernel - Re: [PATCH 0/2] Add dev_sysdata and use it for ACPI

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Message-Id: <1163111737.4982.40.camel@localhost.localdomain>
Date:	Fri, 10 Nov 2006 09:35:37 +1100
From:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
To:	Cornelia Huck <cornelia.huck@...ibm.com>
Cc:	Linux Kernel list <linux-kernel@...r.kernel.org>,
	Len Brown <len.brown@...el.com>, Andrew Morton <akpm@...l.org>,
	Greg KH <greg@...ah.com>
Subject: Re: [PATCH 0/2] Add dev_sysdata and use it for ACPI

On Thu, 2006-11-09 at 17:04 +0100, Cornelia Huck wrote:
> On Thu, 09 Nov 2006 11:45:21 +1100,
> Benjamin Herrenschmidt <benh@....ibm.com> wrote:
> 
> >  - Add a dev_sysdata structure to struct device whose content is arch
> > specific. It will allow architectures like powerpc, arm, i386, ... who
> > need different types of DMA ops for busses and other kind of auxilliary
> > data for devices in general (numa node id, firmware data, etc...) to put
> > them in there, without bloating all architectures. The patch adds an
> > empty definition for the structure to all architectures.
> 
> I like this. If we could move the dma stuff in there, we could get rid
> of it on s390 where it is just bloat we drag around...
> 
> (Maybe dev_archdata would be a better name, since the definition is
> architecture specific?)

Hrm... I wonder why I posted from my IBM address :-) I have no firm
preference on the name of the structure. So far, I had no feedback on
that patch at all appart from yours though.

Andrew, Greg ? Is that something you would take for 2.6.20 ? I need to
know wether I should rework my patches to use that or stick to my hacks
involving hijacking firmware_data.

Cheers,
Ben.

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