Re: [PATCH] Open Firmware device tree virtual filesystem

ron minnich
2007-01-11T19:11:36Z

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