linux-kernel - Re: [PATCH] Re: [PATCH] drivers/net: remove network drivers' last few uses of IRQF_SAMPLE

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Date:	Fri, 16 May 2008 10:56:35 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	Jeff Garzik <jeff@...zik.org>, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	"Brandeburg, Jesse" <jesse.brandeburg@...el.com>,
	Chris Peterson <cpeterso@...terso.com>,
	tpmdd-devel@...ts.sourceforge.net, tpm@...horst.net,
	Herbert Xu <herbert@...dor.apana.org.au>
Subject: Re: [PATCH] Re: [PATCH] drivers/net: remove network drivers' last
 few uses of IRQF_SAMPLE_RANDOM

On Fri, 16 May 2008 02:27:36 +0200
Andi Kleen <andi@...stfloor.org> wrote:

> Jeff Garzik <jeff@...zik.org> writes:
> >
> > A hw_random driver for TPM still needs to (a) parse the TPM header for
> > return code, (b) extract RNG bytes out at offset 14, and (c) figure
> > out some way to get a tpm_chip pointer.
> 
> (d) auto feed the information into random.c. Otherwise it'll be useless
> for most people.

No - you don't want to do FIPS randomness verification in kernel space.
Plus all the other random generator inputs are done via the user space
daemon as they should be.
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