[Qemu-devel] Re: [PATCH 3/4] ide: Ignore double DMA transfer starts/stops

[Stefan Hajnoczi]

On Fri, Nov 26, 2010 at 4:21 PM, Kevin Wolf <address@hidden> wrote:
> You can only start a DMA transfer if it's not running yet, and you can only
> cancel it if it's running.
>
> Signed-off-by: Kevin Wolf <address@hidden>
> ---
>  hw/ide/pci.c |   60 ++++++++++++++++++++++++++++++---------------------------
>  1 files changed, 32 insertions(+), 28 deletions(-)

The PIIX4 spec isn't clear on the behavior but you seem to have worked
out that this makes FreeBSD happier.  Would be nice to hear from
someone who knows PIIX4 IDE well.

Reviewed-by: Stefan Hajnoczi <address@hidden>