linux-kernel - Re: [PATCH] Configure out doublefault exception handler (Linux Tiny)

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Message-Id: <1202832132.12383.93.camel@cinder.waste.org>
Date:	Tue, 12 Feb 2008 10:02:12 -0600
From:	Matt Mackall <mpm@...enic.com>
To:	Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>
Cc:	Sam Ravnborg <sam@...nborg.org>, Linux-tiny@...enic.com,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, "H. Anvin" <hpa@...or.com>,
	Ingo Molnar <mingo@...e.hu>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCH] Configure out doublefault exception handler (Linux
	Tiny)


On Tue, 2008-02-12 at 15:00 +0100, Thomas Petazzoni wrote:
> Hi Sam,
> 
> Le Tue, 12 Feb 2008 14:04:28 +0100,
> Sam Ravnborg <sam@...nborg.org> a écrit :
> 
> > We already have this in arch/x86/Kconfig.debug:
> 
> Oops, my usual "find . -name Kconfig" missed it. Thanks for pointing it
> out!

The fact that you didn't have to add any makefile bits should have been
a hint.

> > It may need a small update if this is valid for both 32 and 64 bit.
> 
> Doesn't seem so: there's only a doublefault_32.c, no doublefault_64.c.
> However, I don't know the details of x86_64.

I bet there's some doublefault-handling code hiding somewhere. It's not
the sort of thing it'd make sense to take out of the architecture.

-- 
Mathematics is the supreme nostalgia of our time.

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