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Re: [Xen-devel] Re: Adding PTE Flag during Page Fault

To: Joe Laws <jlaws@xxxxxxxxxxxxxx>
Subject: Re: [Xen-devel] Re: Adding PTE Flag during Page Fault
From: Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>
Date: Sun, 15 Apr 2007 12:00:18 +0100
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On 14/4/07 22:29, "Joe Laws" <jlaws@xxxxxxxxxxxxxx> wrote:

> Now it just causes Xen to crash and my computer to reboot.
> Unfortunately I can only see the output to the log by doing xm dmesg,
> which gets cleared on every reboot.  Are there any efficient techniques
> to get the latest xm dmesg output to file before the system crashes?

You can use kdump (basically chain boot into a special crash-dump Linux
kernel with block or net drivers which will scrape memory for things like
Xen heap and Xen logging output).

 -- Keir

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