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Date: Thu, 17 Jan 2008 19:11:03 -0800
From: "Yinghai Lu" <yhlu.kernel@gmail.com>
To: "Ingo Molnar" <mingo@elte.hu>
Subject: x86.git kexec rhel 5.1
Cc: LKML <linux-kernel@vger.kernel.org>
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some problem with PAT

A: 1/17 x86.git with PAT enable kernel
B. 1/17 x86.git with PAT diabled kernel
C: RHEL 5.1 stock kernel -53

A kexec B : OK
B kexec A:  OK
A kexec C: very slow
B kexec C:  OK
C kexec A:  OK
C kexec B:  OK

Do we need something to disable PAT when kexec calling shutdown?

YH