As per your suggestion, I tried this on a kernel not patched by kexec.
It works fine on that.

Regards,
- Kishore

-----Original Message-----
From: Eric W. Biederman [mailto:[EMAIL PROTECTED] 
Sent: Thursday, March 09, 2006 2:42 PM
To: Sampathkumar, Kishore (STSD)
Cc: Mike Mason; [email protected]
Subject: Re: [Fastboot] Needed help to debug this kdump problem on
x86_64 systems

"Sampathkumar, Kishore (STSD)" <[EMAIL PROTECTED]> writes:

> I tried the below suggestion. It doesn't seem to work.
>
> What I now notice is that, the system reboots immediately on executing
> the "memory" in load_segments(). It doesn't ever get to executing
> set_idt() and the printk statements I have placed after that.
>
> Wanted to know: by placing "memory" in load_segments(), you are
> essentially inserting a memory barrier, isn't it? So, is this just to
> ensure ordered execution of memory store operations involved in code
> before and the code after "memory"?

Does this work if you try this on a kernel where you don't have
to patch kexec in?

Eric

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