linux-kernel - Re: [BUG FIX] Make x86_32 uni-processor Atomic ops, Atomic

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]

Message-ID: <20090522221408.GE10166@const.famille.thibault.fr>
Date:	Sat, 23 May 2009 00:14:08 +0200
From:	Samuel Thibault <samuel.thibault@...-lyon.org>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	"Michael S. Zick" <lkml@...ethan.org>, linux-kernel@...r.kernel.org
Subject: Re: [BUG FIX] Make x86_32 uni-processor Atomic ops, Atomic

Andi Kleen, le Sat 23 May 2009 00:14:56 +0200, a écrit :
> > That's what I meant: AIUI, LOCK_PREFIX has always only been used for
> > inter-processor interaction (atomic variables, spinlocks, etc.), not for
> 
> PCI has a locked transaction, but I don't think it's widely supported.
> With normal uncached access it is also not very useful.

I'm not talking about the LOCK prefix.  I'm talking about the
LOCK_PREFIX macro.  I'm saying that AIUI it has never been supposed to
be used for procesor-device interaction, even if the LOCK prefix could
be used for that.

Samuel
--
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/