linux-kernel - Re: [patch][rfc] rwsem: generic rwsem

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 for Android: free password hash cracker in your pocket

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

Message-ID: <4548.1165586322@redhat.com>
Date:	Fri, 08 Dec 2006 13:58:42 +0000
From:	David Howells <dhowells@...hat.com>
To:	Nick Piggin <npiggin@...e.de>
Cc:	David Howells <dhowells@...hat.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	linux-arch@...r.kernel.org, Linus Torvalds <torvalds@...l.org>,
	Andrew Morton <akpm@...l.org>
Subject: Re: [patch][rfc] rwsem: generic rwsem 

Nick Piggin <npiggin@...e.de> wrote:

> > Look at how the counter works in the XADD-based version.  That's the way
> > it is *because* I'm using XADD.  That's quite limiting.
> 
> Not really. ll/sc architectures "emulate" xadd the same as they would
> emulate a spinlock. There is nothing suboptimal about it.

Yes, really.  You've missed the point entirely.  Look at *how* the counter
*works*.

David
-
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/