linux-kernel - Re: [PATCH][RFC] exception processing in early boot

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Message-Id: <1156973479.6271.214.camel@localhost.localdomain>
Date:	Wed, 30 Aug 2006 22:31:18 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Willy Tarreau <w@....eu>
Cc:	Andi Kleen <ak@...e.de>, pageexec@...email.hu, davej@...hat.com,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH][RFC] exception processing in early boot

Ar Mer, 2006-08-30 am 22:03 +0200, ysgrifennodd Willy Tarreau:
> So, to conclude, with or without the bug, "hlt;jmp $" will halt the
> CPU as we expect it to. Therefore, I'd like you to restore it in
> the patch.

Having had a dig I would concur that we should add the "hlt" back. The
cases I can find are 386/486 "hangs if hlt executed" bugs, mostly
unresolved/chipset problems and a "hlt during IDE DMA hangs the box" bug
we work around on the Cyrix CS5510.

That said for a PIV at least "hlt" really makes little difference to the
power burn

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