linux-kernel - Re: [PATCH] [1/5] Only scan the root bus in early PCI quirks.

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Message-ID: <20090105014645.GD496@one.firstfloor.org>
Date:	Mon, 5 Jan 2009 02:46:45 +0100
From:	Andi Kleen <andi@...stfloor.org>
To:	Yinghai Lu <yinghai@...nel.org>
Cc:	Andi Kleen <andi@...stfloor.org>, akpm@...ux-foundation.org,
	x86@...nel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] [1/5] Only scan the root bus in early PCI quirks.

> two cases:
> 1. how about system with two or more HT chains, and second will be
> 0x40, x0x80, or 0xc0 ?

The early quirks code only cares about the first south bridge,
it's essentially just a chipset detect. So secondaries do not 
matter. 

> 2. some system with LinuxBIOS, could put first chain on bus 1

Do they or do they not? Please be specific. 

Anyways AntiLinuxBIOS doesn't have ACPI and early-quirks.c is 80%+ ACPI
workarounds so they don't apply. The only exceptions are the VIA
detect or the the HT broadcast workaround. I suppose both do not
apply to these LB systems.

-Andi
-- 
ak@...ux.intel.com
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