From: Kent Borg <kentborg@borg.org>
To: Matt Mackall <mpm@selenic.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>,
Venkatesh Pallipadi <venki@google.com>,
Jarod Wilson <jarod@redhat.com>,
linux-crypto@vger.kernel.org,
Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@elte.hu>,
John Stultz <johnstul@us.ibm.com>,
Herbert Xu <herbert@gondor.hengli.com.au>,
"David S. Miller" <davem@davemloft.net>,
Suresh Siddha <suresh.b.siddha@intel.com>
Subject: Re: [PATCH 4/5] tsc: wire up entropy generation function
Date: Tue, 14 Jun 2011 16:04:05 -0400 [thread overview]
Message-ID: <4DF7BEB5.1070006@borg.org> (raw)
In-Reply-To: <1308074432.15617.136.camel@calx>
Matt Mackall wrote:
> [network adapters are] a great source of potential entropy, a bad
> source of guaranteed entropy. The current RNG tries to do
> accounting on the latter. Accounting on the former is extremely
> suspect.
So we need a patch that:
- Deletes the IRQF_SAMPLE_RANDOM mention in feature-removal-schedule.txt,
- Restores instances of IRQF_SAMPLE_RANDOM in drivers, and
- Changes the credit_entropy_bits() to credit less entropy*.
* The code seems to only handle integer values of entropy. Maybe
when crediting, choose between 1 and 0 credits.
Then once that kernel makes it into the field, a bunch of entropy
starved machines will no longer be entropy starved. A few machines that
are run by people who worship an entropy estimate will still have to
install mice and users, explicit RNGs, etc., but entropy will flow.
Make sense?
-kb
next prev parent reply other threads:[~2011-06-14 20:04 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-13 22:06 [PATCH 0/5] Feed entropy pool via high-resolution clocksources Jarod Wilson
2011-06-13 22:06 ` [PATCH 1/5] random: add new clocksource entropy interface Jarod Wilson
2011-06-13 22:06 ` [PATCH 2/5] clocksource: add support for entropy-generation function Jarod Wilson
2011-06-17 20:52 ` Thomas Gleixner
2011-06-17 21:19 ` Jarod Wilson
2011-06-13 22:06 ` [PATCH 3/5] hpet: wire up entropy generation function Jarod Wilson
2011-06-13 22:06 ` [PATCH 4/5] tsc: " Jarod Wilson
2011-06-13 22:27 ` Venkatesh Pallipadi
2011-06-13 22:35 ` Jarod Wilson
2011-06-13 22:36 ` H. Peter Anvin
2011-06-13 23:10 ` Matt Mackall
2011-06-14 18:11 ` H. Peter Anvin
2011-06-14 0:39 ` Kent Borg
2011-06-14 1:47 ` H. Peter Anvin
2011-06-14 12:39 ` Kent Borg
2011-06-14 14:33 ` Matt Mackall
2011-06-14 17:48 ` Kent Borg
2011-06-14 18:00 ` Matt Mackall
2011-06-14 20:04 ` Kent Borg [this message]
2011-06-14 21:04 ` Matt Mackall
2011-06-14 14:02 ` Jarod Wilson
2011-06-13 23:55 ` Kent Borg
2011-06-17 20:58 ` Thomas Gleixner
2011-06-13 22:06 ` [PATCH 5/5] misc: add clocksource-based entropy generation driver Jarod Wilson
2011-06-17 21:01 ` Thomas Gleixner
2011-06-13 22:38 ` [PATCH 0/5] Feed entropy pool via high-resolution clocksources john stultz
2011-06-14 14:25 ` Jarod Wilson
2011-06-13 23:15 ` Matt Mackall
2011-06-14 15:18 ` Jarod Wilson
2011-06-14 15:22 ` Jarod Wilson
2011-06-14 17:13 ` Matt Mackall
2011-06-14 20:17 ` Jarod Wilson
2011-06-14 21:45 ` Matt Mackall
2011-06-14 22:51 ` Jarod Wilson
2011-06-14 23:12 ` Matt Mackall
2011-06-15 14:49 ` Jarod Wilson
2011-06-15 20:06 ` Matt Mackall
2011-06-17 18:51 ` Jarod Wilson
2011-06-17 19:29 ` Neil Horman
2011-06-17 20:46 ` Matt Mackall
2011-06-17 19:48 ` hpas
2011-06-17 20:28 ` Matt Mackall
2011-06-18 22:40 ` H. Peter Anvin
2011-06-19 13:38 ` Neil Horman
2011-06-19 15:07 ` Herbert Xu
2011-06-20 0:01 ` H. Peter Anvin
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