Re: [Qemu-devel] [PATCH 8/8] s390: Add new channel I/O based virtio transport.

[Richard Henderson]

$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~