Re: [PATCH] API for true Random Number Generators to add entropy (2.6.11)

[Evgeniy Polyakov <johnpol@2ka.mipt.ru>]

On Tue, 2005-03-29 at 17:11 +0400, Evgeniy Polyakov wrote:
> On Tue, 2005-03-29 at 22:43 +1000, Herbert Xu wrote:
> > On Tue, Mar 29, 2005 at 04:15:17PM +0400, Evgeniy Polyakov wrote:
> > > > > On Tue, 2005-03-29 at 20:46 +1000, Herbert Xu wrote:
> > > > 
> > > > > > Well if you can demonstrate that you're getting a higher rate of
> > > > > > throughput from your RNG by doing this in kernel space vs. doing
> > > > > > it in user space please let me know.
> > >
> > > > Well when you get 55mb/s from /dev/random please get back to me.
> > > 
> > > I cant, noone writes 55mbit into it, but HW RNG drivers could. :)
> > 
> > Are you intending to feed that into /dev/random at 55mb/s?
> >
> > If not then how is this an argument against doing it in userspace
> > through rngd?
> 
> Yes.
> Untill pool is filled and then sleep there.
> When someone wants to draw from the pool - awake and fill it again.
> 
> I clearly see your point here and I agree that it must be

I mean userspace validating and load balancing must be
default method for entropy producing.

> default method for entropy producing, but if there are 
> possibility to speed that up, such techniques should be 
> allowed to be used.
> 
> It is really faster to fill pool from the kernelspace
> without copying/validating it in userspace.
> 
-- 
        Evgeniy Polyakov

Crash is better than data corruption -- Arthur Grabowski

Attachment: signature.asc
Description: This is a digitally signed message part