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Message-ID: <13426df10701111111y57776285ma14b6effb236af58@mail.gmail.com>
Date: Thu, 11 Jan 2007 12:11:32 -0700
From: "ron minnich" <rminnich@gmail.com>
To: "Stefan Reinauer" <stepan@coresystems.de>
Subject: Re: [PATCH] Open Firmware device tree virtual filesystem
Cc: "OLPC Developer's List" <devel@laptop.org>,
       "Linux Kernel ML" <linux-kernel@vger.kernel.org>,
       "Mitch Bradley" <wmb@firmworks.com>
In-Reply-To: <20070111182041.GA6243@coresystems.de>
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References: <13426df10701110939k21f7bb1dy38d2b34ca37a5a36@mail.gmail.com>
	 <20070111182041.GA6243@coresystems.de>
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On 1/11/07, Stefan Reinauer <stepan@coresystems.de> wrote:

> This works fine for just passing the device tree, but it will fail for
> the next step of being able to use the firmware in the OS, and returning
> sanely to the firmware.

And why is it we need to do that, presently? And how, in a virtualized
environment, for example, would you plan to support this calling into
firmware? (I sort of know how IBM does it, I am wondering how OFW
would plan to do it).

We can standardize passing a device tree structure across a very wide
range of environments. But supporting callbacks is necessarily going
to be a much smaller range of environments. It sounds, however, like
it will be possible to do both the callback and non-callback cases, so
I think I'm fine with that anyway. I will wait for Segher's patch.

thanks

ron
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