linux-kernel - Re: [PATCH] x86: fix and improve cmpxchg_double{,

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: <1325607218.2320.89.camel@edumazet-HP-Compaq-6005-Pro-SFF-PC>
Date:	Tue, 03 Jan 2012 17:13:38 +0100
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Jan Beulich <JBeulich@...e.com>
Cc:	mingo@...e.hu, tglx@...utronix.de,
	Christoph Lameter <cl@...ux.com>, linux-kernel@...r.kernel.org,
	netdev <netdev@...r.kernel.org>, hpa@...or.com
Subject: Re: [PATCH] x86: fix and improve cmpxchg_double{,_local}()

Le mardi 03 janvier 2012 à 16:08 +0000, Jan Beulich a écrit :

> "1" and "672" are both local labels, so both are okay. As long as there's
> no other (colliding) use of 672 anywhere, that would seem to be the
> preferred fix (feel free to put my ack on the patch when you formally
> submit it).

I was referring the use of a label local to the macro itself, with
restricted scope.

following psudi code would trigger an asm error :

	.macro FOO
	.local_label 1
1:	lock
        .section .smp_locks,"a"
        .balign 4
        .long 1b - .
        .previous
	.endm


	FOO
	jne 1b



--
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/