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SubjectRe: Extreme IDE slowdown with 2.2.18
On Thu, 21 Dec 2000, Alan Cox wrote:

>Date: Thu, 21 Dec 2000 00:49:45 +0000 (GMT)
>From: Alan Cox <>
>To: Julian Anastasov <>
>Cc: Robert Högberg <>,
> linux-kernel <>
>Content-Type: text/plain; charset=us-ascii
>Subject: Re: Extreme IDE slowdown with 2.2.18
>> > known problem with the 2.2.18 kernel?
>> Yes, 2.2.18 is not friendly to all MVP3 users. The autodma
>> detection was disabled for the all *VP3 users in drivers/block/ide-pci.=
>> c.
>Because it was causing disk corruption for some people.

I wish I read this email 24 hours ago. ;o(

>It took a lot of tracking down and I want the shipped kernel
>safe. I now know I'm covering too many chip versions so 2.2.19
>I can get the later VP3's back okay

Any info I can provide to help with my corruption problem
enabling UDMA?

00:00.0 Host bridge: VIA Technologies, Inc. VT82C598 [Apollo
MVP3] (rev 04)
Flags: bus master, medium devsel, latency 16
Memory at d8000000 (32-bit, prefetchable)
Capabilities: [a0] AGP version 1.0

00:01.0 PCI bridge: VIA Technologies, Inc. VT82C598 [Apollo MVP3
AGP] (prog-if 00 [Normal decode])
Flags: bus master, 66Mhz, medium devsel, latency 0
Bus: primary=00, secondary=01, subordinate=01, sec-latency=0

00:07.0 ISA bridge: VIA Technologies, Inc. VT82C596 ISA [Apollo
PRO] (rev 23)
Subsystem: VIA Technologies, Inc. VT82C596/A/B PCI to ISA
Flags: bus master, stepping, medium devsel, latency 0

00:07.1 IDE interface: VIA Technologies, Inc. VT82C586 IDE
[Apollo] (rev 10) (prog-if 8a [Master SecP PriP])
Flags: bus master, medium devsel, latency 32
I/O ports at e000
Capabilities: [c0] Power Management version 2

00:07.3 Host bridge: VIA Technologies, Inc.: Unknown device 3050
(rev 30)
Flags: medium devsel

Dunno if that helps...

Mike A. Harris - Linux advocate - Open source advocate
This message is copyright 2000, all rights reserved.
Views expressed are my own, not necessarily shared by my employer.

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