From mboxrd@z Thu Jan  1 00:00:00 1970
From: Matthew Wilcox <willy@debian.org>
Date: Wed, 21 Aug 2002 12:38:32 +0000
Subject: Re: [Linux-ia64] [RFC] Remove MCA dump?
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To: linux-ia64@vger.kernel.org

On Wed, Aug 21, 2002 at 02:34:42PM +0200, Andreas Schwab wrote:
> Matthew Wilcox <willy@debian.org> writes:
> 
> |> The MCA handler is completely useless.  If I crash the machine and
> |> forget to clear the MCA dump in firmware, at the next boot Linux dumps
> |> the registers (in a hard-to-understand style) and hangs.
> 
> I haven't seen such hangs on our machines, except for some old
> pre-production systems that lack the necessary hardware support.

I wonder why not.  Here's the code:

void
init_handler_platform (struct pt_regs *regs)
{
        /* if a kernel debugger is available call it here else just dump the reg
isters */

        show_regs(regs);                /* dump the state info */
        while (1);                      /* hang city if no debugger */
}

Maybe it only locks up that specific processor so you didn't notice you'd
lost a processor on an SMP system?

-- 
Revolutions do not require corporate support.