linux-kernel - Re: RFC: sign the modules at install time

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Message-Id: <20121019142147.76f67505862afe5614167428@canb.auug.org.au>
Date:	Fri, 19 Oct 2012 14:21:47 +1100
From:	Stephen Rothwell <sfr@...b.auug.org.au>
To:	Rusty Russell <rusty@...tcorp.com.au>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	David Miller <davem@...emloft.net>,
	David Howells <dhowells@...hat.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: RFC: sign the modules at install time

Hi Rusty,

On Fri, 19 Oct 2012 11:53:15 +1030 Rusty Russell <rusty@...tcorp.com.au> wrote:
>
> Linus Torvalds <torvalds@...ux-foundation.org> writes:
> > On Wed, Oct 17, 2012 at 10:34 PM, Rusty Russell <rusty@...tcorp.com.au> wrote:
> >>
> >> Hacking the keyid and signer-name to be extracted every time by
> >> sign-file takes my modules_install time from 18.6 seconds to 19.1.  We'd
> >> get that back easily by making sign-file a perl script anyway; it calls
> >> out to perl 3 times already.
> >
> > Ok, that tiny slowdown seems worth the cleanup, especially if we'd get
> > it back from somebody re-writing it in perl.
> >
> > Want to sign off on the two patches, or put them in your git tree?
> 
> Smerged them together: no point moving the x509keyid script now.
> I dropped the optional dst arg, since we don't use it.

So, this still generates the keys during the normal build, right?  That
would be a problem for build servers that have limited randomness
available to them, I think.

-- 
Cheers,
Stephen Rothwell                    sfr@...b.auug.org.au

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