From: Andi Kleen <ak@suse.de>
To: Roland Dreier <rdreier@cisco.com>
Cc: Keir Fraser <Keir.Fraser@cl.cam.ac.uk>,
Stephen Hemminger <shemminger@osdl.org>,
virtualization@lists.osdl.org,
Ian Pratt <ian.pratt@xensource.com>,
xen-devel@lists.xensource.com, linux-kernel@vger.kernel.org,
Chris Wright <chrisw@sous-sol.org>,
netdev@vger.kernel.org
Subject: Re: [RFC PATCH 34/35] Add the Xen virtual network device driver.
Date: Wed, 10 May 2006 20:28:22 +0200 [thread overview]
Message-ID: <200605102028.22974.ak@suse.de> (raw)
In-Reply-To: <ada1wv3apu0.fsf@cisco.com>
On Tuesday 09 May 2006 22:46, Roland Dreier wrote:
> Keir> Where should we get our entropy from in a VM environment?
> Keir> Leaving the pool empty can cause processes to hang.
>
> You could have something like a virtual HW RNG driver (with a frontend
> and backend), which steals from the dom0 /dev/random pool.
They already have a vTPM - iirc TPMs support random numbers so
that could be used. But it's probably complicated to use.
But if sampling virtual events for randomness is really unsafe (is it
really?) then native guests in Xen would also get bad random numbers
and this would need to be somehow addressed.
I haven't seen real evidence yet why the virtual events should
provide less randomness than the hardware.
-And
next prev parent reply other threads:[~2006-05-10 18:28 UTC|newest]
Thread overview: 186+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-05-09 8:49 [RFC PATCH 00/35] Xen i386 paravirtualization support Chris Wright
2006-05-09 7:00 ` [RFC PATCH 01/35] Add XEN config options and disable unsupported config options Chris Wright
2006-05-09 10:05 ` Adrian Bunk
2006-05-09 11:06 ` Ed Tomlinson
2006-05-09 12:45 ` Christian Limpach
2006-05-09 23:23 ` Chris Wright
2006-05-09 14:47 ` Daniel Walker
2006-05-09 15:16 ` Christian Limpach
2006-05-09 16:00 ` Daniel Walker
2006-05-09 23:25 ` Chris Wright
2006-05-09 16:42 ` Andi Kleen
2006-05-10 15:36 ` [Xen-devel] " Alan Cox
2006-05-10 15:48 ` Christian Limpach
2006-05-09 7:00 ` [RFC PATCH 02/35] Makefile support to build Xen subarch Chris Wright
2006-05-09 7:00 ` [RFC PATCH 03/35] Add Xen interface header files Chris Wright
2006-05-09 14:49 ` Martin J. Bligh
2006-05-09 17:54 ` Christian Limpach
2006-05-09 15:15 ` Christoph Hellwig
2006-05-09 19:35 ` Hollis Blanchard
2006-05-09 19:48 ` [Xen-devel] " Anthony Liguori
2006-05-09 22:34 ` Christoph Hellwig
2006-05-09 22:36 ` Ingo Oeser
2006-05-09 16:06 ` Daniel Walker
2006-05-09 16:18 ` Christian Limpach
2006-05-09 16:29 ` Daniel Walker
2006-05-09 7:00 ` [RFC PATCH 04/35] Hypervisor " Chris Wright
2006-05-09 22:43 ` Ingo Oeser
2006-05-09 23:01 ` Chris Wright
2006-05-09 7:00 ` [RFC PATCH 05/35] Add sync bitops Chris Wright
2006-05-09 22:56 ` Christoph Lameter
2006-05-09 23:04 ` Andi Kleen
2006-05-09 23:07 ` Chris Wright
2006-05-09 7:00 ` [RFC PATCH 06/35] Add vmlinuz build target Chris Wright
2006-05-09 7:00 ` [RFC PATCH 07/35] Make LOAD_OFFSET defined by subarch Chris Wright
2006-05-10 23:28 ` Zachary Amsden
2006-05-11 7:47 ` [Xen-devel] " Gerd Hoffmann
2006-05-11 8:51 ` Chris Wright
2006-05-11 9:06 ` Gerd Hoffmann
2006-05-11 16:43 ` Christian Limpach
2006-05-12 6:47 ` [Xen-devel] " Jan Beulich
2006-05-12 8:38 ` Christian Limpach
2006-05-09 7:00 ` [RFC PATCH 08/35] Add Xen-specific memory management definitions Chris Wright
2006-05-09 14:49 ` Martin J. Bligh
2006-05-09 17:44 ` Christian Limpach
2006-05-15 6:44 ` Pete Zaitcev
2006-05-15 7:04 ` Keir Fraser
2006-05-15 8:19 ` Christian Limpach
2006-05-17 16:06 ` Pete Zaitcev
2006-05-18 7:42 ` Chris Wright
2006-05-09 7:00 ` [RFC PATCH 09/35] Change __FIXADDR_TOP to leave room for the hypervisor Chris Wright
2006-05-09 7:00 ` [RFC PATCH 10/35] Add a new head.S start-of-day file for booting on Xen Chris Wright
2006-05-09 7:00 ` [RFC PATCH 11/35] Add support for Xen to entry.S Chris Wright
2006-05-09 16:51 ` Andi Kleen
2006-05-09 7:00 ` [RFC PATCH 12/35] Add start-of-day setup hooks to subarch Chris Wright
2006-05-09 7:00 ` [RFC PATCH 13/35] Support loading an initrd when running on Xen Chris Wright
2006-05-09 7:00 ` [RFC PATCH 14/35] Subarch support for CPUID instruction Chris Wright
2006-05-09 7:00 ` [RFC PATCH 15/35] subarch support for controlling interrupt delivery Chris Wright
2006-05-09 14:49 ` Martin J. Bligh
2006-05-09 14:55 ` Nick Piggin
2006-05-09 15:51 ` Christian Limpach
2006-05-09 16:02 ` Martin J. Bligh
2006-05-09 16:07 ` Andi Kleen
2006-05-09 16:29 ` Christian Limpach
2006-05-09 16:31 ` Andi Kleen
2006-05-09 20:42 ` Christian Limpach
2006-05-09 21:56 ` Andi Kleen
2006-05-10 10:35 ` Christian Limpach
2006-05-10 10:54 ` Andi Kleen
2006-05-09 21:56 ` Chris Wright
2006-05-09 7:00 ` [RFC PATCH 16/35] subarch support for interrupt and exception gates Chris Wright
2006-05-09 11:09 ` Andi Kleen
2006-05-09 12:55 ` Christian Limpach
2006-05-13 12:27 ` Andrew Morton
2006-05-15 18:30 ` Chris Wright
2006-05-09 7:00 ` [RFC PATCH 17/35] Segment register changes for Xen Chris Wright
2006-05-09 7:16 ` Pavel Machek
2006-05-10 20:09 ` Andi Kleen
2006-05-10 20:30 ` Pavel Machek
2006-05-11 10:34 ` Avi Kivity
2006-05-11 10:41 ` Andi Kleen
2006-05-12 0:28 ` [Xen-devel] " Rusty Russell
2006-05-09 16:44 ` Andi Kleen
2006-05-18 20:20 ` Zachary Amsden
2006-05-18 20:41 ` Keir Fraser
2006-05-18 21:26 ` Chris Wright
2006-05-09 7:00 ` [RFC PATCH 18/35] Support gdt/idt/ldt handling on Xen Chris Wright
2006-05-09 7:21 ` Pavel Machek
2006-05-10 20:23 ` Andi Kleen
2006-05-09 14:49 ` Martin J. Bligh
2006-05-09 18:14 ` Christian Limpach
2006-05-09 18:21 ` Martin Bligh
2006-05-09 7:00 ` [RFC PATCH 19/35] subarch support for control register accesses Chris Wright
2006-05-09 7:00 ` [RFC PATCH 20/35] subarch stack pointer update Chris Wright
2006-05-09 7:00 ` [RFC PATCH 21/35] subarch TLB support Chris Wright
2006-05-09 7:00 ` [RFC PATCH 22/35] subarch suport for idle loop (NO_IDLE_HZ for Xen) Chris Wright
2006-05-09 13:21 ` Andi Kleen
2006-05-09 15:13 ` Christian Limpach
2006-05-09 7:00 ` [RFC PATCH 23/35] Increase x86 interrupt vector range Chris Wright
2006-05-09 7:00 ` [RFC PATCH 24/35] Add support for Xen event channels Chris Wright
2006-05-12 21:41 ` Pavel Machek
2006-05-13 12:27 ` Andrew Morton
2006-05-13 13:02 ` Keir Fraser
2006-05-09 7:00 ` [RFC PATCH 25/35] Add Xen time abstractions Chris Wright
2006-05-09 16:23 ` Daniel Walker
2006-05-09 16:38 ` Christian Limpach
2006-05-09 19:27 ` Adrian Bunk
2006-05-09 21:50 ` Andi Kleen
2006-05-09 23:03 ` Ingo Oeser
2006-05-09 23:09 ` Andi Kleen
2006-05-09 23:13 ` Chris Wright
2006-05-12 21:44 ` Pavel Machek
2006-05-09 7:00 ` [RFC PATCH 26/35] Add Xen subarch reboot support Chris Wright
2006-05-09 17:02 ` Andi Kleen
2006-05-12 21:46 ` Pavel Machek
2006-05-12 21:57 ` Chris Wright
2006-05-09 7:00 ` [RFC PATCH 27/35] Add nosegneg capability to the vsyscall page notes Chris Wright
2006-05-09 7:00 ` [RFC PATCH 28/35] add support for Xen feature queries Chris Wright
2006-05-12 21:56 ` Pavel Machek
2006-05-09 7:00 ` [RFC PATCH 29/35] Add the Xen virtual console driver Chris Wright
2006-05-09 13:26 ` Andi Kleen
2006-05-09 15:03 ` Christian Limpach
2006-05-13 12:27 ` Andrew Morton
2006-05-13 12:51 ` Nick Piggin
2006-05-13 14:29 ` Andrew Morton
2006-05-13 14:43 ` Nick Piggin
2006-05-09 7:00 ` [RFC PATCH 30/35] Add apply_to_page_range() function Chris Wright
2006-05-09 7:00 ` [RFC PATCH 31/35] Add Xen grant table support Chris Wright
2006-05-09 7:00 ` [RFC PATCH 32/35] Add Xen driver utility functions Chris Wright
2006-05-09 19:48 ` Greg KH
2006-05-09 21:50 ` Andi Kleen
2006-05-09 7:00 ` [RFC PATCH 33/35] Add the Xenbus sysfs and virtual device hotplug driver Chris Wright
2006-05-09 16:06 ` Alexey Dobriyan
2006-05-09 16:28 ` Andi Kleen
2006-05-09 19:40 ` Greg KH
2006-05-09 21:53 ` Chris Wright
2006-05-09 22:01 ` Greg KH
2006-05-09 22:50 ` Chris Wright
2006-05-09 23:43 ` Anthony Liguori
2006-05-09 19:49 ` Greg KH
2006-05-09 19:58 ` Chris Wright
2006-05-13 12:28 ` Andrew Morton
2006-05-09 7:00 ` [RFC PATCH 34/35] Add the Xen virtual network device driver Chris Wright
2006-05-09 11:55 ` [Xen-devel] " Herbert Xu
2006-05-09 12:43 ` Christian Limpach
2006-05-09 13:01 ` Herbert Xu
2006-05-09 13:14 ` Andi Kleen
2006-05-09 13:16 ` Christian Limpach
2006-05-09 13:26 ` Herbert Xu
2006-05-09 14:00 ` Christian Limpach
2006-05-09 14:30 ` David Boutcher
2006-05-09 23:35 ` Chris Wright
2006-05-09 11:58 ` Christoph Hellwig
2006-05-09 23:37 ` Chris Wright
2006-05-09 18:56 ` Stephen Hemminger
2006-05-09 23:39 ` Chris Wright
2006-05-09 20:25 ` Stephen Hemminger
2006-05-09 20:26 ` Keir Fraser
2006-05-09 20:39 ` Stephen Hemminger
2006-05-09 20:46 ` Roland Dreier
2006-05-10 18:28 ` Andi Kleen [this message]
2006-05-11 0:33 ` Herbert Xu
2006-05-11 7:49 ` Keir Fraser
2006-05-11 8:04 ` Herbert Xu
2006-05-11 9:47 ` Andi Kleen
2006-05-11 16:18 ` Stephen Hemminger
2006-05-11 16:48 ` Rick Jones
2006-05-11 16:55 ` Stephen Hemminger
2006-05-11 17:30 ` Andi Kleen
2006-05-09 20:32 ` Chris Wright
2006-05-09 22:41 ` [Xen-devel] " Herbert Xu
2006-05-09 23:51 ` Chris Wright
2006-05-10 6:36 ` Keir Fraser
2006-05-09 7:00 ` [RFC PATCH 35/35] Add Xen virtual block " Chris Wright
2006-05-09 12:01 ` Christoph Hellwig
2006-05-09 14:49 ` [RFC PATCH 00/35] Xen i386 paravirtualization support Martin J. Bligh
2006-05-09 15:07 ` Christoph Hellwig
2006-05-09 15:12 ` Martin J. Bligh
2006-05-09 15:20 ` Andi Kleen
2006-05-09 15:22 ` Christoph Hellwig
2006-05-09 15:45 ` Pekka Enberg
2006-05-14 1:35 ` Andrew Morton
2006-05-15 21:01 ` Chris Wright
-- strict thread matches above, loose matches on Subject: below --
2006-03-22 6:30 Chris Wright
2006-03-22 6:31 ` [RFC PATCH 34/35] Add the Xen virtual network device driver Chris Wright
2006-03-22 8:59 ` Arjan van de Ven
2006-03-22 15:29 ` James Morris
2006-03-22 17:17 ` Stephen Hemminger
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