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:	Fri, 30 May 2008 21:45:59 -0700
From:	Ulrich Drepper <drepper@...hat.com>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
CC:	linux-kernel@...r.kernel.org, akpm@...ux-foundation.org,
	mtk.manpages@...il.com
Subject: Re: [PATCH 3/3] 64-bit futexes: x86 support

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Linus Torvalds wrote:
> You just blindly 
> claim that you're the only one who can know things like this and can do 
> serialization, and that your way is the only approach.

Nonsense.  As you wrote yourself, you're only guessing about your
approaches.  You didn't check what we currently do (which is the extra
data stored protected by locks) and you suggest this scheme.

Then you suggest hand-wavingly other schemes and I explain why they
cannot work as efficiently.  I never doubted that they cannot work at
all.  If performance wouldn't be important I would not have to change
the current implementation which works semantically just fine.


> Sure, futex use and user space is not the same as the kernel code. It's 
> possible that you really do need 64-bit futexes. But quite frankly, the 
> only thing you have proven so far is that you're an ass.

Well, I don't know what you're reading into what I wrote.  I've only
explained what is wrong with each of your proposals and arguments.  If
pointing out the flaws makes me an ass then so be it.

- --
➧ Ulrich Drepper ➧ Red Hat, Inc. ➧ 444 Castro St ➧ Mountain View, CA ❖
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.9 (GNU/Linux)

iEYEARECAAYFAkhA2AcACgkQ2ijCOnn/RHTiPQCgzWqXP1EW8HID9FuzbgQa70fL
THsAoLJvUKJO+hqFM3Hd3cHlOCIKhRoF
=ab2b
-----END PGP SIGNATURE-----
--
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/

Powered by blists - more mailing lists