linux-kernel - Re: [PATCH v1 4/6] driver: Google Bootlog

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Message-ID: <20110125094319.2ce1b2e2@lxorguk.ukuu.org.uk>
Date:	Tue, 25 Jan 2011 09:43:19 +0000
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Mike Waychison <mikew@...gle.com>
Cc:	Greg KH <greg@...ah.com>, torvalds@...ux-foundation.org,
	San Mehat <san@...gle.com>, Aaron Durbin <adurbin@...gle.com>,
	Duncan Laurie <dlaurie@...gle.com>,
	linux-kernel@...r.kernel.org, Tim Hockin <thockin@...gle.com>
Subject: Re: [PATCH v1 4/6] driver: Google Bootlog

> > 2.	EBDA isn't an X86 property it's a PC property. asm/bios_ebda
> > provides one helper and perhaps it all belongs in there (along with 'is
> > it a PC' sanity check)
> 
> It's not obvious to me how one would make that sort of check (is a PC) 
> at runtime. Suggestions?

I suspect the right thing to do is to put a get_ebda_foo() helper set
into arch/x86 which platforms can override. That way non PC platforms can
simply report zero.

One for the x86 maintainers.

Alan
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