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From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Date: Thu, 25 Jul 2013 15:47:36 +1000
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Subject: Re: [Qemu-devel] [PATCH 00/28] Memory API for 1.6: fix I/O port
 endianness mess
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To: Anthony Liguori <aliguori@us.ibm.com>
Cc: aik@ozlabs.ru, jan.kiszka@siemens.com, qemu-devel@nongnu.org, agraf@suse.de, hpoussin@reactos.org, Paolo Bonzini <pbonzini@redhat.com>, aurelien@aurel32.net

On Thu, 2013-07-25 at 15:26 +1000, Benjamin Herrenschmidt wrote:
> On Mon, 2013-07-22 at 10:34 -0500, Anthony Liguori wrote:
> > 
> > Really nice series.  I'd prefer we simply got rid of the endianness
> > flag
> > entirely but this is a good step.
> > 
> > Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
> 
> Are you going to merge this ?
> 
> Afaik (Alexey just told me), pretty much anything IO is broken for
> powerpc upstream and has been for weeks now ! It looks like the only
> thing that got reverted was the VGA problem but everything else is still
> busted including virtio.
> 
> Why hasn't the original breakage been reverted immediately instead ?

It's actually worse than I thought. Alexey is showing me that in fact,
even PCI MMIO is busted, using EHCI causes qemu to segfault for example.

This is a complete trainwreck. Why was that junk merged in the first
place and why wasn't it immediately reverted ?

Ben.