Re: [PATCH v5 0/5] random,x86,kvm: Rework arch RNG seeds and get some from kvm

From: H. Peter Anvin
Date: Wed Aug 13 2014 - 03:49:05 EST

On 08/12/2014 12:22 PM, Andy Lutomirski wrote:
> On Tue, Aug 12, 2014 at 12:17 PM, Theodore Ts'o <tytso@xxxxxxx> wrote:
>> On Tue, Aug 12, 2014 at 12:11:29PM -0700, Andy Lutomirski wrote:
>>> What's the status of this series? I assume that it's too late for at
>>> least patches 2-5 to make it into 3.17.
>> Which tree were you hoping this patch series to go through? I was
>> assuming it would go through the x86 tree since the bulk of the
>> changes in the x86 subsystem (hence my Acked-by).
> There's some argument that patch 1 should go through the kvm tree.
> There's no real need for patch 1 and 2-5 to end up in the same kernel
> release, either.
>> IIRC, Peter had some concerns, and I don't remember if they were all
>> addressed. Peter?
> I don't know. I rewrite one thing he didn't like and undid the other,
> but there's plenty of opportunity for this version to be problematic, too.

Sorry, I have been heads down on the current merge window. I will look
at this for 3.18, presumably after Kernel Summit.

The proposed arch_get_rng_seed() is not really what it claims to be; it
most definitely does not produce seed-grade randomness, instead it seems
to be an arch function for best-effort initialization of the entropy
pools -- which is fine, it is just something quite different.

I want to look over it more carefully before acking it, though.

Andy, are you going to be in Chicago?


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