linux-kernel - Re: [tip:x86/mce] x86/bitops: Move BIT

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: <1337792083.9783.34.camel@laptop>
Date:	Wed, 23 May 2012 18:54:43 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Borislav Petkov <borislav.petkov@....com>
Cc:	"H. Peter Anvin" <hpa@...or.com>, mingo@...nel.org,
	linux-kernel@...r.kernel.org, frank.arnold@....com,
	akpm@...ux-foundation.org, torvalds@...ux-foundation.org,
	tglx@...utronix.de, linux-tip-commits@...r.kernel.org
Subject: Re: [tip:x86/mce] x86/bitops: Move BIT_64() for a wider use

On Wed, 2012-05-23 at 18:29 +0200, Peter Zijlstra wrote:
> If I remember my type rules correctly you'll get something like that
> with:
> 
> #define BIT(n)  ({ typeof(n) __n = (n); (__n < 32) ? (1UL << __n) : (1ULL << __n); })

OK, that doesn't work. Memory played tricks on me. Now I'll keep
wondering what was special about ?: and how I've seen it abused.

--
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/