linux-kernel - Re: [PATCH] Option to disable AMD C1E (allows dynticks to work)

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Message-ID: <4776F6A0.9010801@keyaccess.nl>
Date:	Sun, 30 Dec 2007 02:38:40 +0100
From:	Rene Herman <rene.herman@...access.nl>
To:	pharon@...il.com
CC:	"David P. Reed" <dpreed@...d.com>,
	Richard Harman <richard@...hardharman.com>,
	Eduard-Gabriel Munteanu <eduard.munteanu@...ux360.ro>,
	LKML <linux-kernel@...r.kernel.org>,
	Ingo Molnar <mingo@...hat.com>
Subject: Re: [PATCH] Option to disable AMD C1E (allows dynticks to work)

On 29-12-07 23:28, Islam Amer wrote:

> Thanks for the detailed response.
> 
> I thought I had gotten to the bottom of my problems when I found that
> udev workaround, I guess I was naive.
> 
> I did the two tests you described and they predictably caused the hard
> hangs. I needed to run the port80 program only once to get the hard
> hang.
> 
> The output of the dmidecode commands were :
> 
> Quanta
> 30B7
> 
> I applied the patch you provided ( luckily I am using 2.6.24-rc6-git3
> kernel because I need the b43 driver ), added these values and compiled.
> 
> 
> 	{
> 		.callback	= dmi_io_delay_port_alt,
> 		.ident		= "Compaq Presario v6000",
> 		.matches	= {
> 			DMI_MATCH(DMI_BOARD_VENDOR, "Quanta"),
> 			DMI_MATCH(DMI_BOARD_NAME, "30B7")
> 		}
> 	},
> 
> I was able to boot without the udev workaround and can now use hwclock
> without hanging the system. In dmesg I can see this new line :

Thanks much for testing (and David -- thanks for asking). Updated patch 
attached with this information. Compaq itself seems to spell the type with a 
capital V so that's the only difference...

Can I add a "Tested-by: Islam Amer <pharon@...il.com>" to this? (and David, 
same for you with this address you're using in this thread?)

Rene.

View attachment "dmi-port80-minimal-bootparam.diff" of type "text/plain" (11112 bytes)