From: John <linux.kernel@free.fr>
To: linux-kernel@vger.kernel.org
Cc: Lee Revell <rlrevell@joe-job.com>,
mingo@elte.hu, akpm@osdl.org, linux-apps@vger.kernel.org,
linux.kernel@free.fr
Subject: Re: 2.6.20.3-rt8 - DMA suffers excessive delay periodically
Date: Thu, 29 Mar 2007 15:04:24 +0200 [thread overview]
Message-ID: <460BB958.4070307@free.fr> (raw)
In-Reply-To: <75b66ecd0703280916v5a9ed49u2f2549a455e832f1@mail.gmail.com>
Lee Revell wrote:
> John wrote:
>
>> Would someone know how to disable SMM in this BIOS?
>
> There's no generic way.
I understand. Would someone know how to disable SMM in the VIA Pro133T
chipset (VT82C596B south bridge). What I/O ports do I need to write to,
and what values should I write to these ports?
> Try disabling USB keyboard emulation and any unused peripherals.
I have disabled everything I could find in the BIOS. Serial and parallel
ports, USB, integrated sound, APM, ACPI, booting from exotic hardware or
from the network. To no avail :-(
> Also google "RTAI disable SMM".
I see that they have a Linux kernel module to disable SMM in Intel
chipsets. But I didn't see the equivalent for VIA chipsets.
>>> Is this a laptop? They are plagued with SMM problems...
>>
>> No it is an "indutrial" motherboard.
>> Although I don't know what makes it "industrial".
>
> One would really hope that such a device would be designed for machine
> control and similar RT apps and thus free of SMM...
Indeed...
I wonder if VIA thinks their old chipsets were industrial-grade.
Regards.
next prev parent reply other threads:[~2007-03-29 13:05 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-03-27 16:32 2.6.20.3-rt8 - DMA suffers excessive delay periodically John
2007-03-27 20:41 ` Lee Revell
2007-03-28 8:38 ` John
2007-03-28 16:16 ` Lee Revell
2007-03-29 13:04 ` John [this message]
2007-03-29 18:45 ` Kevin Perros
2007-03-29 19:31 ` Lee Revell
2007-03-29 21:33 ` Alan Cox
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