Re: [PATCH 7/15] misc: Make x86 doublefault handling optional
From: Rob Landley
Date: Wed Nov 16 2005 - 08:13:05 EST
On Friday 11 November 2005 02:35, Matt Mackall wrote:
> This adds configurable support for doublefault reporting on x86
> +config DOUBLEFAULT
> + depends X86
> + default y if X86
> + bool "Enable doublefault exception handler" if EMBEDDED
> + help
> + This option allows trapping of rare doublefault exceptions that
> + would otherwise cause a system to silently reboot. Disabling
> this + option saves about 4k.
What causes doublefaults? Is it triggerable from userspace, or is it
something funky the kernel does?
Trying to figure out when it would be worth using this...
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