Re: [Linux-ia64] [RFC] Remove MCA dump?

From: Matthew Wilcox <>
Date: 2002-08-21 22:38:32
On Wed, Aug 21, 2002 at 02:34:42PM +0200, Andreas Schwab wrote:
> Matthew Wilcox <> 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:

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.
Received on Wed Aug 21 05:38:41 2002

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