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

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Message-Id: <1211729202.5913.81.camel@andromache>
Date:	Mon, 26 May 2008 00:56:42 +0930
From:	Glen Turner <gdt@....id.au>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	Theodore Tso <tytso@....edu>,
	Arjan van de Ven <arjan@...radead.org>,
	Chris Peterson <cpeterso@...terso.com>,
	Herbert Xu <herbert@...dor.apana.org.au>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	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>,
	tpmdd-devel@...ts.sourceforge.net, tpm@...horst.net
Subject: Re: [PATCH] Re: [PATCH] drivers/net: remove network drivers' last
	few uses of IRQF_SAMPLE_RANDOM

On Sun, 2008-05-18 at 19:53 +0200, Andi Kleen wrote:
> I never quite understood the rationale behind that one either:
> if you worry about someone else controlling the timing of these events,
> why do you not worry about timings on the local system. e.g.
> it's not that hard to predict with similar accuracy when a hard disk
> interrupt happened when a local process read something from disk. Or
> when the  keyboard/USB interrupt happened when you process keyboard input.

Accepting packets requires you to trust another party -- the network
provider and users of your host's networked services -- which you do
not have to trust otherwise.

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