Re: [Xen-devel] [PATCH]HVM CDROM DMA support

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

On 14/10/06 12:50 am, "Wang, Winston L" <winston.l.wang@xxxxxxxxx> wrote:

> Attached please review the patch adding back the HVM CDROM DMA support
> from last years.
> Tested it showing have about 300% (data transfer rate) faster than
> current PIO mode. This is meaningful for guest OS installation.

This is great. I'm not putting it into 3.0.3 simply because of fears about
knock-on side effects of this patch (e.g., taking us down guest paths we've
taken before).

Could you redo the patch and update the end-of-line comments? For example,
the one that says 'no DMA' can't be correct any more. A brief list of the
advertised DMA modes would be good too.

 -- Keir



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