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Hi!

I compiled my own xen0 kernel, but I'm when I try to set DMA to my hard
diks I get the folow message:

jack:/# hdparm -d1 /dev/hda

/dev/hda:
setting using_dma to 1 (on)
HDIO_SET_DMA failed: Operation not permitted
using_dma = 0 (off)

Now I don't know if I forgot some stuff in kernel configuration or if I
realy can't set DMA with xen0.

Does anyone know?

Thanks!

Ronaldo



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On Thu, 30 Dec 2004 17:07:29 -0200
Ronaldo Lazzari <tuamae@terra.com.br> wrote:

> I compiled my own xen0 kernel, but I'm when I try to set DMA to my hard
> diks I get the folow message:
>
> jack:/# hdparm -d1 /dev/hda
>
> /dev/hda:
> setting using_dma to 1 (on)
> HDIO_SET_DMA failed: Operation not permitted
> using_dma = 0 (off)
>
> Now I don't know if I forgot some stuff in kernel configuration or if I
> realy can't set DMA with xen0.

I risk a guess and say that you forgot to include the IDE driver which
provides DMA for your special chipset was not included because you used
Xen's default config? (have a look at Device Drivers ->
ATA/ATAPI/MFM/RLL support for 2.6 menuconfig.)

Regards,
Milan

- --

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