Re: [Qemu-devel] enabling bus-master IDE driver

[Johannes Schindelin]

Hi,

On Fri, 5 Nov 2004, Jason Brittain wrote:

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

Are you sure you did as guest root? This error could happen if you try to
use hdparm as a plain user. I would expect a different error if the drive
is not capable of doing DMA.

Ciao,
Dscho