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From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Date: Thu, 16 Aug 2012 11:52:11 +1000
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Subject: Re: [Qemu-devel] [Qemu-ppc][PATCH v8 2/2] Add USB enablement on
 sPAPR platform.
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To: Li Zhang <zhlcindy@linux.vnet.ibm.com>
Cc: "aliguori@us.ibm.com" <aliguori@us.ibm.com>, Alexander Graf <agraf@suse.de>, "qemu-devel@nongnu.org" <qemu-devel@nongnu.org>, "qemu-ppc@nongnu.org" <qemu-ppc@nongnu.org>, Li Zhang <zhlcindy@gmail.com>, "david@gibson.dropbear.id.au" <david@gibson.dropbear.id.au>

On Thu, 2012-08-16 at 09:29 +0800, Li Zhang wrote:
> > Yes, that's pretty much what I was asking for (here and for the
> mac99 u3 machine). Just base your patch on ppc-next. My patches are in
> there.
> That's great. Thanks a lot!

Note that you missed the hard freeze for qemu 1.2, it was today.

So we'll have to do a simpler patch to wire up USB to pseries for 1.2
and delay your work for the next release.

Something along the lines in spapr.c of:

  if (usb_enabled) {
     instanciate ohci
     if (vga enabled) {
        add mouse & kbd
     }
  }
Cheers,
Ben.