Subject: Re: [PATCH] drivers/net: remove network drivers' last few uses of IRQF_SAMPLE_RANDOM

From: Jeff Garzik <[email-masked]>
Date: Thu, 15 May 2008 18:44:22 -0400

Henrique de Moraes Holschuh wrote:
> If anyone wants to poke at it, get the Debian rng-tools source package.
> It directly supports the VIA PadLock in userspace in a suitably paranoid
> mode (checks that the RNG was not reprogrammed at every read), and does
> multithreading so that FIPS and output processing does not block (nor
> gets blocked) by /dev/hw_random reading, etc.

Neat.  I always did prefer VIA padlock in userspace.

I just sorta assumed a buffering, interrupt-driver TPM RNG driver would 
be better than doing it from userspace, but maybe that was a bad 
assumption to make on my part.  It should be quite doable to support TPM 
RNG entirely via userspace, at any rate.

	Jeff