[Qemu-devel] qemu/hw ide.c

[Qemu-devel] qemu/hw ide.c

[Fabrice Bellard]

CVSROOT:	/sources/qemu
Module name:	qemu
Changes by:	Fabrice Bellard <bellard>	06/08/07 21:36:34

Modified files:
	hw             : ide.c 

Log message:
	use AIO for DMA transfers - enabled DMA for CDROMs

CVSWeb URLs:
http://cvs.savannah.gnu.org/viewcvs/qemu/hw/ide.c?cvsroot=qemu&r1=1.45&r2=1.46

[FreeSBIE LVC] Re: [Qemu-devel] qemu/hw ide.c

[Juergen Lock]

In article <E1GACm2-0001yD-9b@savannah.gnu.org> you write:
>CVSROOT:	/sources/qemu
>Module name:	qemu
>Changes by:	Fabrice Bellard <bellard>	06/08/07 21:36:34
>
>Modified files:
>	hw             : ide.c 
>
>Log message:
>	use AIO for DMA transfers - enabled DMA for CDROMs

Hi!

 I just tried FreeSBIE LVC (see announcement here:
	http://www.riondabsd.net/2006/10/13/announce-freesbie-lvc-is-out/
) with qemu cvs (using this experimental port update:
	http://docs.freebsd.org/cgi/mid.cgi?20061026201752.GA51540
) and it hung, printing:
	atapi_poll called!
repeatedly on the console.  Disabling USE_DMA_CDROM in hw/ide.c made it
boot.  So this seems to be a variation of the old problem of the cdrom
dma patch being incompatible with FreeBSD atapicam. (FreeSBIE still has
atapicam in the kernel, and back when the first cdrom dma patch was
posted it caused the cd being detected as a disk (da) on an older
FreeBSD atapicam guest...)

Re: [FreeSBIE LVC] Re: [Qemu-devel] qemu/hw ide.c

[Matteo Riondato]

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On Fri, Oct 27, 2006 at 01:22:08AM +0200, Juergen Lock wrote:
>  I just tried FreeSBIE LVC (see announcement here:
> 	http://www.riondabsd.net/2006/10/13/announce-freesbie-lvc-is-out/
> ) with qemu cvs (using this experimental port update:
> 	http://docs.freebsd.org/cgi/mid.cgi?20061026201752.GA51540
> ) and it hung, printing:
> 	atapi_poll called!
> repeatedly on the console.  Disabling USE_DMA_CDROM in hw/ide.c made it
> boot.  So this seems to be a variation of the old problem of the cdrom
> dma patch being incompatible with FreeBSD atapicam. (FreeSBIE still has
> atapicam in the kernel, and back when the first cdrom dma patch was
> posted it caused the cd being detected as a disk (da) on an older
> FreeBSD atapicam guest...)

I cannot help with this issue (which seems a qemu-related issue to me).
The only thing I can say is that FreeSBIE images won't have atapicam in 
the kernel as there's no need for it. 

While I'm here, I want to thank all the qemu developers for their great
work. Qemu is my main FreeSBIE testing platform and I'm really happy with
it.

Best Regards
-- 
Matteo Riondato
FreeBSD Committer (http://www.freebsd.org)
G.U.F.I. Staff Member (http://www.gufi.org)
FreeSBIE Developer (http://www.freesbie.org)

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