linux-kernel - Re: [PATCH 46/74] x86, lto: Disable fancy hweight optimizations for LTO

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: <50324BD902000078000966B7@nat28.tlf.novell.com>
Date:	Mon, 20 Aug 2012 13:38:17 +0100
From:	"Jan Beulich" <JBeulich@...e.com>
To:	"Andi Kleen" <ak@...ux.intel.com>
Cc:	"Andi Kleen" <andi@...stfloor.org>, <x86@...nel.org>,
	<akpm@...ux-foundation.org>, <mmarek@...e.cz>,
	<linux-kbuild@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 46/74] x86, lto: Disable fancy hweight
 optimizations for LTO

>>> On 20.08.12 at 13:18, Andi Kleen <ak@...ux.intel.com> wrote:
>>  That's not the point: The point really is that you could allow the
>> alternative regardless of LTO, and just penalize the LTO case
>> by having even the asm clobber the registers that a function call
>> would not preserve.
> 
> That's just what a normal call does, right?

Exactly.

Jan

--
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/