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Date: Tue, 20 May 2008 14:09:59 +0200
From: Gabriel C <nix.or.die@googlemail.com>
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To: Alan Jenkins <aj504@cs.york.ac.uk>
CC: =?ISO-8859-1?Q?David_H=E4rdeman?= <david@hardeman.nu>,
       linux-kernel@vger.kernel.org
Subject: Re: Loading DSDT from initrd, can it be done from grub instead?
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Alan Jenkins wrote:

> David Härdeman wrote:
>> In commit 9a9e0d685553af76cb6ae2af93cca4913e7fcd47 the
>> ACPI_CUSTOM_DSDT_INITRD option was removed.
>>
>> I was wondering if it'd be feasible to hack grub to load a custom DSDT
>> instead (since grub can read filesystems) and then pass a pointer to a
>> memory location containing the DSDT to the kernel?
> 
> Um, why?  What stops you from reverting the offending commit?
> 
> Without further info, I'd assume the feature was removed on policy
> grounds.  I.e. it's not nice to be effectively patching the BIOS
> yourself, and vendors have fixed most of their BIOS's / linux is
> slightly more tolerant to broken ones.  I don't know whats wrong with
> reading files from the initrd.


It was reverted because the code was not really ready and caused some problems.

> 
> Alan

Gabriel