linux-kernel - Re: [tip:x86/setup] x86, setup: "glove box" BIOS calls -- infrastructure

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Date:	Mon, 13 Apr 2009 12:08:45 -0700
From:	"H. Peter Anvin" <hpa@...ux.intel.com>
To:	alan-jenkins@...fmail.co.uk
CC:	"H. Peter Anvin" <hpa@...or.com>, Ingo Molnar <mingo@...e.hu>,
	Avi Kivity <avi@...hat.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Pavel Machek <pavel@....cz>, mingo@...hat.com,
	linux-kernel@...r.kernel.org, tglx@...utronix.de, rjw@...k.pl,
	linux-tip-commits@...r.kernel.org
Subject: Re: [tip:x86/setup] x86, setup: "glove box" BIOS calls -- 	infrastructure

Alan Jenkins wrote:
> IIRC, the first person to report the issue found that it triggered
> when hotplugging a HDMI cable.

Oh, that's right.  Either we were invoking the video BIOS from the 
kernel (which we do actually do sometimes) -- in which case we have 
control over when it happens -- or there is commingling of the video 
BIOS and mainboard BIOS combined with SMM crap.  Joy.

	-hpa

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