From mboxrd@z Thu Jan  1 00:00:00 1970
From: Paolo Bonzini <pbonzini@redhat.com>
Subject: Re: Using virtio for inter-VM communication
Date: Tue, 17 Jun 2014 07:24:52 +0200
Message-ID: <539FD124.6050007__20359.7379652367$1402982712$gmane$org@redhat.com>
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To: Jan Kiszka <jan.kiszka@web.de>, Rusty Russell <rusty@rustcorp.com.au>, Henning Schild <henning.schild@siemens.com>, qemu-devel@nongnu.org, virtualization@lists.linux-foundation.org, kvm@vger.kernel.org
Cc: Jailhouse <jailhouse-dev@googlegroups.com>
List-Id: virtualization@lists.linuxfoundation.org

Il 15/06/2014 08:20, Jan Kiszka ha scritto:
>> > I think implementing Xen hypercalls in jailhouse for grant table and
>> > event channels would actually make a lot of sense.  The Xen
>> > implementation is 2.5kLOC and I think it should be possible to compact
>> > it noticeably, especially if you limit yourself to 64-bit guests.
> At least the grant table model seems unsuited for Jailhouse. It allows a
> guest to influence the mapping of another guest during runtime. This we
> want (or even have) to avoid in Jailhouse.

IIRC implementing the grant table hypercalls with copies is inefficient 
but valid.

Paolo