lkml.org 
[lkml]   [2009]   [Apr]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: IRQF_SAMPLE_RANDOM question...
Jeff Garzik wrote:
> Stephen Hemminger wrote:
>> The real problem one is xen-netfront. Because 1) it is least random,
>> the attacker might be another VM 2) the VM is most in need of random
>> samples because it doesn't have real hardware.
>
> Agreed.
>
> I'm surprised Xen doesn't use virtio-rng. I guess it needs a special
> Xen paravirt driver for randomness.

Yes, sampling randomness in a PV driver is pretty pointless. We could
do the guest end of an entropy sink entirely in usermode, but at present
there's no dom0 support for an entropy source.

J


\
 
 \ /
  Last update: 2009-04-07 10:31    [W:0.073 / U:0.436 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site