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From: Peter Maydell <peter.maydell@linaro.org>
Date: Thu, 27 Aug 2015 13:20:52 +0100
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Subject: Re: [Qemu-devel] [PATCH 1/2] memory: allow zero size for
	adjust_endianness()
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To: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>, Jason Wang <jasowang@redhat.com>, QEMU Developers <qemu-devel@nongnu.org>, Greg Kurz <gkurz@linux.vnet.ibm.com>

On 27 August 2015 at 13:17, Michael S. Tsirkin <mst@redhat.com> wrote:
> Basically the point is that ABI is extended to make
> ioeventfd with len = 0 mean "any length".
> 0 is thus not meaningless anymore.

But how can you do adjustment for incorrect endianness
if you don't know the size of the data that you're
trying to work with? That's why this switch insists
that the size is 1, 2, 4 or 8.

-- PMM