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Re: [Qemu-devel] [PATCH 1/2] hw/usb-ohci: Honour endpoint maximum packet


From: Peter Maydell
Subject: Re: [Qemu-devel] [PATCH 1/2] hw/usb-ohci: Honour endpoint maximum packet size
Date: Thu, 15 Sep 2011 12:24:58 +0100

On 15 September 2011 11:49, Gerd Hoffmann <address@hidden> wrote:
>Peter Maydell wrote:
>> It seems to me that at least some of that is likely to be
>> guest-visible, especially in the case where an endpoint returns an
>> error partway through. So it's not clear to me that you could
>> validly batch up everything in the TD and do it all at once.
>
> I think the only guest-visible effect is that the guest will never ever see
> an partially filled transfer block, it is either empty or completely filled
> (except on short transfers).

Hmm, maybe. Anyway, can we have this committed as a bug fix
for the current design pending you redoing this with your
new approach, please?

thanks
-- PMM



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