linux-kernel - Re: Bisected regression

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Message-ID: <4B21510D.4030609@kernel.org>
Date:	Thu, 10 Dec 2009 11:50:37 -0800
From:	Yinghai Lu <yinghai@...nel.org>
To:	Roland Dreier <rdreier@...co.com>
CC:	Jens Axboe <jens.axboe@...cle.com>, Ingo Molnar <mingo@...e.hu>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: Bisected regression

Roland Dreier wrote:
>  > that BIOS is using first 64k for mptable. and after booting those
>  > mptable is overwritten by trampoline.
> 
> So fix that BIOS people should do is to move the mptable above 64K and
> leave low 64K empty?

Yes. should be below and near 1M, and use e820 to reserve it.

YH
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