From: Jason Brittain <jason@brittainweb.org>
To: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] enabling bus-master IDE driver
Date: Sat, 06 Nov 2004 13:52:11 -0800 [thread overview]
Message-ID: <418D478B.9090007@brittainweb.org> (raw)
In-Reply-To: <Pine.LNX.4.58.0411061526140.4439@wgmdd8.biozentrum.uni-wuerzburg.de>
Johannes Schindelin wrote:
> 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 was most certainly logged in as root in the guest Linux
when I did that.
> I would expect a different error if the drive
> is not capable of doing DMA.
Well, I haven't seen other situations where drives were
incapable of DMA, so I don't know, but "Operation not
permitted" seems to fit.
How else should I check whether DMA can be turned on?
--
Jason Brittain
next prev parent reply other threads:[~2004-11-06 22:13 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-11-04 20:35 [Qemu-devel] enabling bus-master IDE driver Simon Frew
2004-11-05 13:32 ` zitu
2004-11-05 15:02 ` zitu
2004-11-06 1:53 ` Jason Brittain
2004-11-06 14:27 ` Johannes Schindelin
2004-11-06 21:52 ` Jason Brittain [this message]
2004-11-07 9:03 ` Jens Axboe
2004-11-07 9:21 ` Jens Axboe
2004-11-07 9:38 ` Jens Axboe
2004-11-07 11:01 ` Hetz Ben Hamo
2004-11-07 11:16 ` Jens Axboe
2004-11-08 10:15 ` zitu
2004-11-08 16:51 ` Andreas Bollhalder
2004-11-09 7:38 ` Paul Jakma
2004-11-09 10:28 ` Hetz Ben Hamo
2004-11-09 13:53 ` Paul Jakma
2004-11-11 17:29 ` Jason Brittain
2004-11-11 19:06 ` Jens Axboe
2004-11-11 19:02 ` Jason Brittain
2004-11-11 19:16 ` Jens Axboe
2004-11-12 8:42 ` Jens Axboe
2004-11-07 11:02 ` James Boddington
2004-11-10 1:41 ` James Boddington
2004-11-06 21:57 ` James Boddington
2004-11-06 22:11 ` James Boddington
2004-11-06 23:46 ` zitu
2004-11-07 0:41 ` jeebs
2004-11-07 7:12 ` Jason Brittain
-- strict thread matches above, loose matches on Subject: below --
2004-11-05 15:37 Juergen Keil
2004-11-05 15:43 ` zitu
2004-11-05 15:45 ` zitu
2004-11-05 15:52 ` Jens Axboe
2004-11-05 16:10 ` zitu
2004-11-05 17:30 ` Damien Mascord
2004-11-12 14:27 Juergen Keil
2004-11-12 18:02 ` Jason Brittain
2004-11-12 19:07 Juergen Keil
2004-11-16 19:41 ` Juergen Lock
2004-11-23 5:12 ` Norikatsu Shigemura
2004-11-25 21:12 ` Juergen Lock
2004-11-26 10:48 Juergen Keil
2004-11-28 20:09 ` Juergen Lock
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