From: Paolo Bonzini <pbonzini@redhat.com>
To: Nikolay Nikolaev <n.nikolaev@virtualopensystems.com>
Cc: qemu-devel <qemu-devel@nongnu.org>,
VirtualOpenSystems Technical Team <tech@virtualopensystems.com>,
"Damjan Marion (damarion)" <damarion@cisco.com>,
"Michael S. Tsirkin" <mst@redhat.com>
Subject: Re: [Qemu-devel] vhost-user: broken mem regions
Date: Wed, 25 Jun 2014 20:00:59 +0200 [thread overview]
Message-ID: <53AB0E5B.5060000@redhat.com> (raw)
In-Reply-To: <CADDJ2=Oc0Xk54nsWK8GhkdT9mLL+YON8B9tY25KgdD2u0UrsWw@mail.gmail.com>
Il 25/06/2014 19:06, Nikolay Nikolaev ha scritto:
>> > I understand now what you mean. Yeah, the format should be changed
>> > to include the offset (why does vhost-user need the ua at all?
>> > perhaps the offset can replace the ua).
> I am trying to do the math here. So if this file is mapped by QEMU
> into a single file then probably
> (region[4].ua - region[3].ua) should give you the offset. And also
> (region[4].ua - region[1].ua) shoudl give the above 3G offset. Or I am
> missing something?
This is correct, but in principle it's not required to map all the
areas. The lowest region could correspond to a offset=65536, or
something like that. It's better to change the vring values to use
offsets instead of absolute addresses.
Paolo
next prev parent reply other threads:[~2014-06-25 18:01 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <A459CE38-2929-47A2-8683-8D7EAF0325C0@cisco.com>
[not found] ` <20140625135207.GC14578@redhat.com>
2014-06-25 14:06 ` [Qemu-devel] vhost-user: broken mem regions Damjan Marion (damarion)
2014-06-25 14:13 ` Nikolay Nikolaev
2014-06-25 14:16 ` Michael S. Tsirkin
2014-06-25 14:20 ` Damjan Marion (damarion)
2014-06-25 14:27 ` Michael S. Tsirkin
2014-06-25 14:57 ` Damjan Marion (damarion)
2014-06-25 15:29 ` Michael S. Tsirkin
2014-06-25 15:46 ` Damjan Marion (damarion)
2014-06-25 15:50 ` Michael S. Tsirkin
2014-06-25 16:30 ` Damjan Marion (damarion)
2014-06-25 16:44 ` Paolo Bonzini
2014-06-25 16:56 ` Nikolay Nikolaev
2014-06-25 17:05 ` Paolo Bonzini
2014-06-25 18:11 ` Michael S. Tsirkin
2014-06-25 18:07 ` Michael S. Tsirkin
2014-06-25 18:13 ` Nikolay Nikolaev
2014-06-25 18:18 ` Michael S. Tsirkin
2014-06-25 21:37 ` Damjan Marion (damarion)
2014-06-26 10:03 ` Nikolay Nikolaev
2014-06-25 17:06 ` Nikolay Nikolaev
2014-06-25 18:00 ` Paolo Bonzini [this message]
2014-06-25 21:52 ` Damjan Marion (damarion)
2014-06-26 7:13 ` Michael S. Tsirkin
2014-06-26 7:44 ` Damjan Marion (damarion)
2014-06-26 7:56 ` Michael S. Tsirkin
2014-06-26 8:26 ` Damjan Marion (damarion)
[not found] ` <CADDJ2=M3=mxjHO3=gNq5xKseDyrJkaBVFLkb=SsFr0_d9UUBsQ@mail.gmail.com>
2014-06-25 14:16 ` Damjan Marion (damarion)
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