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From: Andy King <acking@vmware.com>
To: "Michael S. Tsirkin" <mst@redhat.com>
Cc: kvm@vger.kernel.org, Dmitry Torokhov <dtor@vmware.com>,
	netdev@vger.kernel.org, Reilly Grant <grantr@vmware.com>,
	virtualization@lists.linux-foundation.org,
	Pekka Enberg <penberg@kernel.org>,
	Sasha Levin <sasha.levin@oracle.com>,
	"David S. Miller" <davem@davemloft.net>
Subject: Re: [RFC 4/5] VSOCK: Introduce vhost-vsock.ko
Date: Thu, 27 Jun 2013 19:38:43 -0700 (PDT)	[thread overview]
Message-ID: <1767234411.9934439.1372387123615.JavaMail.root__38420.9973308772$1372387140$gmane$org@vmware.com> (raw)
In-Reply-To: <20130627104246.GC20215@redhat.com>

Hi Michael,

> > +	u32 cid = VHOST_VSOCK_DEFAULT_HOST_CID;
> > +	return cid;
> > +}
> > +
> 
> Interesting. So all hosts in fact have the same CID?

"Host" here means the thing _below_ the VM.  Any process running on
the host OS can be addressed with cid 2.  Each VM gets its own cid.
So communication is always between VM x <-> host 2.  That makes for
easy lookup on the VM's part.  (Note that we further distinguish in
the VMCI transport between the hypervisor, specifically the VM's own
VMX, which is on cid 0, and the host on cid 2.)

Thanks!
- Andy

  reply	other threads:[~2013-06-28  2:38 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-06-27  7:59 [RFC 0/5] Introduce VM Sockets virtio transport Asias He
2013-06-27  8:00 ` [RFC 1/5] VSOCK: Introduce vsock_find_unbound_socket and vsock_bind_dgram_generic Asias He
2013-06-27  8:00 ` [RFC 2/5] VSOCK: Introduce virtio-vsock-common.ko Asias He
2013-06-27 10:34   ` Michael S. Tsirkin
2013-06-28  6:28     ` Asias He
2013-06-29  4:32   ` David Miller
2013-06-29 23:45     ` Asias He
2013-06-29  4:32   ` David Miller
2013-06-27  8:00 ` [RFC 3/5] VSOCK: Introduce virtio-vsock.ko Asias He
2013-06-27  8:00 ` [RFC 4/5] VSOCK: Introduce vhost-vsock.ko Asias He
2013-06-27 10:42   ` Michael S. Tsirkin
2013-06-28  2:38     ` Andy King [this message]
2013-06-28  2:38     ` Andy King
2013-06-28  6:55     ` Asias He
2013-06-27  8:00 ` [RFC 5/5] VSOCK: Add Makefile and Kconfig Asias He
2013-06-27 10:23 ` [RFC 0/5] Introduce VM Sockets virtio transport Michael S. Tsirkin
2013-06-28  2:25   ` Andy King
2013-06-28  5:50     ` Asias He
2013-06-28  6:12   ` Asias He
2013-06-27 19:03 ` Sasha Levin
2013-06-28  6:26   ` Asias He

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