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

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Message-Id: <1211727722.5913.63.camel@andromache>
Date:	Mon, 26 May 2008 00:32:02 +0930
From:	Glen Turner <gdt@....id.au>
To:	Benny Amorsen <benny+usenet@...rsen.dk>
Cc:	netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drivers/net: remove network drivers' last few uses of
	IRQF_SAMPLE_RANDOM

On Fri, 2008-05-16 at 22:34 +0200, Benny Amorsen wrote:

> Perhaps it would be possible to make most types of interrupts add
> entropy, but not credit any entropy?

You need to be certain that those sources are not able
to be influenced by a hostile party, otherwise the entropy
pool can be degraded to be less random over successive samples
than its entropy score suggests.  Interrupts do not meet that
test.

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