linux-kernel - Re: enable dual rng on VIA C7

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Tue, 27 Nov 2007 20:01:49 +0100
From:	Udo van den Heuvel <udovdh@...all.nl>
To:	Dave Jones <davej@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, Michael Buesch <mb@...sch.de>,
	folkert van Heusden <folkert@...heusden.com>
Subject: Re: enable dual rng on VIA C7

Dave Jones wrote:
>  > > Something like this perhaps ?
>  > 
>  > Yes, I think that's a big step in the right direction!
>  > 
>  > But I am no expert and cannot really judge how necessary or correct the
>  > implementation is w.r.t. the 'undefined' function bits for CPU's that
>  > lack a certain feature.
> 
> The checks at the end of the patch for the x86_mask/model ensure
> we only enable the 2nd noise source on CPUs documented to have it,
> so we should be safe.
> 
> Andrew, want to throw that in the -mm pile for a while?

Thanks for assuring we are 'safe'.
Sounds OK to me.
Thanks for picking up this tiny improvement.

Any ideas on the power consumption increase question I received w.r.t.
this patch? (or why VIA would have made the 2nd RNG switchable)
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/