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Open Source and information security mailing list archives
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Date: Thu, 29 Mar 2007 15:04:24 +0200 From: John <linux.kernel@...e.fr> To: linux-kernel@...r.kernel.org CC: Lee Revell <rlrevell@...-job.com>, mingo@...e.hu, akpm@...l.org, linux-apps@...r.kernel.org, linux.kernel@...e.fr Subject: Re: 2.6.20.3-rt8 - DMA suffers excessive delay periodically 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. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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