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

From: Jens Axboe
Subject: Re: [Qemu-devel] enabling bus-master IDE driver
Date: Thu, 11 Nov 2004 20:06:49 +0100

On Thu, Nov 11 2004, Jason Brittain wrote:
> I just pulled the latest source from CVS (today's), and tried
> looking at DMA again.
> Host: Linux 2.6 (Fedora Core 2)
> Guest: XP corp.
> It still says the primary IDE channel is in PIO mode, and
> doesn't seem any faster.
> Host: Linux 2.6 (Fedora Core 2)
> Guest: Linux 2.6
> hdparm now reports that DMA is on for /dev/hda, and I can also
> turn it on and off.  With it on, it's about twice as fast as
> it is with it off.  So, this seems to work.

If I could install XP, I could take a look. But it will boot for me
after install, just hangs. If I restart qemu, it complains about a bad
boot loader.

If I get time I'll look into this.

Jens Axboe

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