linux-kernel - Re: 2.6.26-rc9-git9 doesn't boot on Macintel

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Message-ID: <86802c440807160044ge504cacl419b6cbcad5f0f9d@mail.gmail.com>
Date:	Wed, 16 Jul 2008 00:44:42 -0700
From:	"Yinghai Lu" <yhlu.kernel@...il.com>
To:	"Jack Howarth" <howarth@...mo.msbb.uc.edu>
Cc:	"Linux Kernel Mailing List" <linux-kernel@...r.kernel.org>,
	"Justin Mattock" <justinmattock@...il.com>
Subject: Re: 2.6.26-rc9-git9 doesn't boot on Macintel

I looked at your dmesg from 2.6.25.10

it tried to use mmconfig, and later fall back to conf1, because
1. your MCFG said it support bus [0,255], and range will be
[0xf0000000, 0xffffffff]
2. firmware only reserve [0xf0000000, 0xf4000000)

and 2.5.25 will not check acp reserved range.

from 2.6.26, it will check if the [0xf0000000, 0xffffffff] is reserved
via acpi dsdt _crs?
it will fail too.

So MCFG table is broken.

You need to get firmware update from your vendor.

or we need to put that system on DMI check to change end_bus_number
from 0xff to 0x3f

ps: mem=2g will not work, it will can not change mcfg table etc... you
need take out 1G ram out.

YH
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