From: Arnd Bergmann <arnd@arndb.de>
To: kvm-devel@lists.sourceforge.net
Cc: xen-devel <xen-devel@lists.xensource.com>,
virtualization <virtualization@lists.linux-foundation.org>
Subject: Re: [kvm-devel] [Xen-devel] More virtio users
Date: Wed, 13 Jun 2007 00:07:35 +0200 [thread overview]
Message-ID: <200706130007.36437.arnd@arndb.de> (raw)
In-Reply-To: <466BB1AF.1000601@qumranet.com>
On Sunday 10 June 2007, Avi Kivity wrote:
> > - PCI (or your favorite HW bus) passthrough, for your favorite oddball
> > device (e.g., crypto-accelerators).
> >
> Won't all high-bandwidth traffic be through dma, bypassing virtio?
It can be done, but you'd also need a passthrough for the IOMMU
in that case, and you get a potential security hole: if a malicious
guest is smart enough to figure out IOMMU mappings from the device
to memory owned by the host.
Arnd <><
next prev parent reply other threads:[~2007-06-12 22:07 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <466BA965.6050208@qumranet.com>
2007-06-10 8:06 ` [Xen-devel] More virtio users Muli Ben-Yehuda
[not found] ` <20070610080602.GD3738@rhun.haifa.ibm.com>
2007-06-10 8:09 ` Avi Kivity
[not found] ` <466BB1AF.1000601@qumranet.com>
2007-06-12 22:07 ` Arnd Bergmann [this message]
2007-06-12 23:40 ` [kvm-devel] " Caitlin Bestler
2007-06-10 8:13 ` Rusty Russell
2007-06-11 3:04 ` [Xen-devel] " ron minnich
[not found] ` <1181463220.16428.24.camel@localhost.localdomain>
2007-06-10 8:16 ` Avi Kivity
[not found] ` <466BB34B.9050105@qumranet.com>
2007-06-10 12:37 ` Rusty Russell
[not found] ` <1181479060.16428.37.camel@localhost.localdomain>
2007-06-11 6:41 ` Jens Axboe
2007-06-11 7:29 ` Rusty Russell
[not found] ` <1181546953.16428.96.camel@localhost.localdomain>
2007-06-11 7:33 ` Jens Axboe
2007-06-12 0:31 ` Rusty Russell
[not found] ` <1181608287.16428.127.camel@localhost.localdomain>
2007-06-12 6:24 ` Jens Axboe
2007-06-12 7:52 ` Rusty Russell
[not found] ` <1181634747.6237.79.camel@localhost.localdomain>
2007-06-12 7:56 ` Jens Axboe
2007-06-11 8:16 ` [Xen-devel] " Gerd Hoffmann
2007-06-11 8:19 ` Avi Kivity
2007-06-11 19:24 ` Anthony Liguori
2007-06-11 23:19 ` Rusty Russell
2007-06-12 3:36 ` Anthony Liguori
[not found] ` <466E14A6.6020400@codemonkey.ws>
2007-06-12 4:07 ` Benjamin Herrenschmidt
[not found] ` <1181603983.16428.100.camel@localhost.localdomain>
2007-06-12 0:47 ` Benjamin Herrenschmidt
2007-06-12 22:01 ` [kvm-devel] " Arnd Bergmann
2007-06-14 16:27 ` [Xen-devel] " Mark Williamson
[not found] <1EF1E44200D82B47BD5BA61171E8CE9D04269608@NT-IRVA-0750.brcm.ad.broadcom.com>
2007-06-12 23:54 ` [kvm-devel] [Xen-devel] " Arnd Bergmann
2007-06-13 5:28 ` Muli Ben-Yehuda
2007-06-14 19:41 ` Caitlin Bestler
[not found] <1EF1E44200D82B47BD5BA61171E8CE9D04269D6E@NT-IRVA-0750.brcm.ad.broadcom.com>
2007-06-14 23:39 ` Arnd Bergmann
[not found] <200706150139.36770.arnd@arndb.de>
2007-06-15 16:26 ` Caitlin Bestler
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