Hi there,
On 05/05/06, Sven Köhler <[EMAIL PROTECTED]> wrote:
Hi,
i just booted a recent knoppix-cd (4.0.2) and i'm trying to enable DMA,
but it won't work!
I started qemu with that command:
qemu -m 256 -cdrom knoppix.iso -boot d
But inside knoppix, a "hdparm -d1 /dev/hdc" won't work:
HDIO_SET_DMA failed: Operation not permitted
Just a note: setting DMA through hdparm doesn't work on Linux since
tens of versions ago, it's been depreceted and you have to trust the
on-boot autodetection (and it works fine -- unless you didn't compile
the right driver in). It's the same on real machines.
Are there some issues with qemu's DMA support and Linux?
(qemu does have DMA support, doesn't it?)
Greetings
Sven
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Regards,
Andrzej
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