linux-kernel - Re: [RFT] x86 acpi: normalize segment descriptor register on resume

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Date:	Wed, 16 Jul 2008 10:13:54 -0400
From:	"Andrew Lutomirski" <luto@...ealbox.com>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	"Andi Kleen" <andi@...stfloor.org>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	"Matthew Garrett" <mjg59@...f.ucam.org>,
	"Ingo Molnar" <mingo@...e.hu>,
	public-kernel-testers-u79uwXL29TY76Z2rM5mHXA@...gmane.org,
	"ACPI Devel Maling List" <linux-acpi@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	"pm list" <linux-pm@...ts.linux-foundation.org>,
	"Pavel Machek" <pavel@....cz>
Subject: Re: [RFT] x86 acpi: normalize segment descriptor register on resume

Sorry for the delay in testing.  This appears to work and fix the problem.

--Andy

On Mon, Jul 14, 2008 at 12:18 AM, H. Peter Anvin <hpa@...or.com> wrote:
> H. Peter Anvin wrote:
>>
>> The most likely explanation for this is that the VESA BIOS expects to be
>> entered in Big Real Mode (*.limit = 0xffffffff) instead of ordinary Real
>> Mode.  Here is a completely untested patch which changes the segment
>> descriptors to Big Real Mode instead.  It would be worth testing out.
>>
>
> ... and here is one that actually has a prayer of actually working.
>
>        -hpa
>
>
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