linux-kernel - Re: arch/x86/kernel/cpu/intel.c needs an update for Haswell?

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: <51FF123C.8010208@intel.com>
Date:	Mon, 05 Aug 2013 10:47:24 +0800
From:	Alex Shi <alex.shi@...el.com>
To:	Borislav Petkov <bp@...en8.de>,
	"H. Peter Anvin" <h.peter.anvin@...el.com>
CC:	Ilari Stenroth <ilari.stenroth@...il.com>,
	linux-kernel@...r.kernel.org
Subject: Re: arch/x86/kernel/cpu/intel.c needs an update for Haswell?

On 08/01/2013 05:07 PM, Alex Shi wrote:
> From 6fb21a9ce475cfc6c7c39bdfd3d9422be24cdb74 Mon Sep 17 00:00:00 2001
> From: Alex Shi <alex.shi@...el.com>
> Date: Wed, 31 Jul 2013 16:28:42 +0800
> Subject: [PATCH 1/2] x86/tlb_flushall_shift: add Ivybridge EP CPU support
> 
> Tested with munmap.c on Ivybridge EP 2S machine, the best shift value is
> 2, that means when the tlb flush entries less than 64, single invlpg has
> performance benefit on this machine.
> The testcase come from: https://lkml.org/lkml/2012/5/17/59
> Results show it has about 5% to 30% performance increase.
> 
> Signed-off-by: Alex Shi <alex.shi@...el.com>
> ---

Any comments are appreciated!

-- 
Thanks
    Alex
--
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/