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Re: [Xen-devel] [PATCH 7 of 7] x86: always explicitly map acpi memory

To: Yinghai Lu <yhlu.kernel@xxxxxxxxx>
Subject: Re: [Xen-devel] [PATCH 7 of 7] x86: always explicitly map acpi memory
From: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
Date: Sun, 07 Sep 2008 17:02:11 -0700
Cc: Ingo Molnar <mingo@xxxxxxx>, Xen Devel <xen-devel@xxxxxxxxxxxxxxxxxxx>, Andi Kleen <andi@xxxxxxxxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, "H. Peter Anvin" <hpa@xxxxxxxxx>
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Yinghai Lu wrote:
> actually,
> case 1: acpi tables near mmio, range, we don't map them from
> 2.6.27-rc1, and it is bigger than max_low_mapped...
> case 2: some strange system put acpi in the middle of RAM... like when
> 8G ram installed, but MMIO is 3.5G, BIOS put acpi tables around 2G..

OK, so what's your conclusion?  Is this change OK or not?


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