Re: panic in ide_dma_intr on KT400

From: Chuck Berg (
Date: Wed Jun 18 2003 - 22:41:59 EST

On Tue, Jun 17, 2003 at 10:34:48AM +0200, Bartlomiej Zolnierkiewicz wrote:
> On Mon, 16 Jun 2003, Chuck Berg wrote:
> > I have a machine with a Soyo Dragon motherboard (Via KT400 chipset).
> >
> > With kernels 2.5.69, 2.5.70, and 2.5.71, it panics in ide_dma_intr() while
> > detecting the IDE drives. If I boot with pci=noacpi or acpi=off, two of my
> > drives come up without DMA, rendering the system unusably slow.
> You forgot to compile in VIA IDE support,
> there is no CONFIG_BLK_DEV_VIA82CXXX=y in your 2.5 config.


With that enabled, DMA works. Now (with 2.5.72 and pci=noacpi) the system
crashes with no messages when I read from all my drives at the same time as
heavy network activity. Without pci=noacpi I get the same panic in
ide_dma_intr() while detecting the drives.

Bootup messages and .config:
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