Message-ID: <1380784979.645.87.camel@pasglop>
Subject: Re: [PATCH 3/3] KVM: PPC: Book3S: Add support for hwrng found on
 some powernv systems
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Gleb Natapov <gleb@redhat.com>
Cc: Alexander Graf <agraf@suse.de>, Paolo Bonzini <pbonzini@redhat.com>,
        Paul Mackerras <paulus@samba.org>,
        Michael Ellerman <michael@ellerman.id.au>,
        linux-kernel@vger.kernel.org, mpm@selenic.com,
        herbert@gondor.hengli.com.au, linuxppc-dev@ozlabs.org,
        kvm@vger.kernel.org, kvm-ppc@vger.kernel.org, tytso@mit.edu
Date: Thu, 03 Oct 2013 17:22:59 +1000
In-Reply-To: <20131003054355.GT17294@redhat.com>
References: <20131001083908.GA17294@redhat.com>
	 <1380620338.645.22.camel@pasglop> <524AAFAA.3010801@redhat.com>
	 <20131002050940.GA25363@drongo> <524BDD73.3020106@redhat.com>
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On Thu, 2013-10-03 at 08:43 +0300, Gleb Natapov wrote:
> Why it can be a bad idea? User can drain hwrng continuously making other
> users of it much slower, or even worse, making them fall back to another
> much less reliable, source of entropy.

Not in a very significant way, we generate entropy at 1Mhz after all, which
is pretty good.

Cheers,
Ben.


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