linux-kernel - Re: [PATCH 0/6] x86, setup: "glove box" BIOS interrupts

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Message-Id: <200904102005.32574.rjw@sisk.pl>
Date:	Fri, 10 Apr 2009 20:05:32 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCH 0/6] x86, setup: "glove box" BIOS interrupts

On Friday 10 April 2009, H. Peter Anvin wrote:
> This is a patchset to "glove box" off BIOS interrupts in the x86 setup
> code, thus hopefully dealing once and for all with the problems of
> BIOSes touching registers they shouldn't.
> 
> The concept is simple: we manipulate a register image in memory, then
> swap it in immediately before calling the BIOS, and then switch the
> register file back.  All BIOS interrupts are channeled through this path.
> 
> The increase in size is about 8% or ~1.3K in the maximal case.

FWIW, I like the approach.

Thanks,
Rafael
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