From mboxrd@z Thu Jan  1 00:00:00 1970
From: Richard Henderson <rth@twiddle.net>
Subject: Re: [Qemu-devel] [PATCH 8/8] s390: Add new channel I/O based virtio
 transport.
Date: Wed, 16 Jan 2013 08:46:02 -0800
Message-ID: <50F6D94A.40600@twiddle.net>
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Cc: Cornelia Huck <cornelia.huck@de.ibm.com>,
	linux-s390 <linux-s390@vger.kernel.org>,
	Anthony Liguori <aliguori@us.ibm.com>,
	KVM <kvm@vger.kernel.org>, Gleb Natapov <gleb@redhat.com>,
	Carsten Otte <cotte@de.ibm.com>,
	Sebastian Ott <sebott@linux.vnet.ibm.com>,
	Marcelo Tosatti <mtosatti@redhat.com>,
	Heiko Carstens <heiko.carstens@de.ibm.com>,
	qemu-devel <qemu-devel@nongnu.org>,
	Christian Borntraeger <borntraeger@de.ibm.com>,
	Martin Schwidefsky <schwidefsky@de.ibm.com>
To: Alexander Graf <agraf@suse.de>
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$SUBJECT reminds me that the tcg s390x port is now prepared
to implement channel insns, but previously there were no
channels worth talking about:

> /* I/O Instructions.  For each we simply indicate non-operation.  */
>     C(0xb276, XSCH,    S,     Z,   0, 0, 0, 0, subchannel, 0)
>     C(0xb230, CSCH,    S,     Z,   0, 0, 0, 0, subchannel, 0)
>     C(0xb231, HSCH,    S,     Z,   0, 0, 0, 0, subchannel, 0)
>     C(0xb232, MSCH,    S,     Z,   0, 0, 0, 0, subchannel, 0)
>     C(0xb23b, RCHP,    S,     Z,   0, 0, 0, 0, subchannel, 0)
>     C(0xb238, RSCH,    S,     Z,   0, 0, 0, 0, subchannel, 0)
>     C(0xb233, SSCH,    S,     Z,   0, 0, 0, 0, subchannel, 0)
>     C(0xb234, STSCH,   S,     Z,   0, 0, 0, 0, subchannel, 0)
>     C(0xb235, TSCH,    S,     Z,   0, 0, 0, 0, subchannel, 0)

With a bit of help, I can make these emulated insns implement
virtio as well.


r~