From: Alex Shi <alex.shi@intel.com>
To: Borislav Petkov <bp@alien8.de>,
"H. Peter Anvin" <h.peter.anvin@intel.com>
Cc: Ilari Stenroth <ilari.stenroth@gmail.com>, linux-kernel@vger.kernel.org
Subject: Re: arch/x86/kernel/cpu/intel.c needs an update for Haswell?
Date: Mon, 05 Aug 2013 10:47:24 +0800 [thread overview]
Message-ID: <51FF123C.8010208@intel.com> (raw)
In-Reply-To: <51FA256C.80001@intel.com>
On 08/01/2013 05:07 PM, Alex Shi wrote:
> From 6fb21a9ce475cfc6c7c39bdfd3d9422be24cdb74 Mon Sep 17 00:00:00 2001
> From: Alex Shi <alex.shi@intel.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@intel.com>
> ---
Any comments are appreciated!
--
Thanks
Alex
next prev parent reply other threads:[~2013-08-05 2:48 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-30 18:50 arch/x86/kernel/cpu/intel.c needs an update for Haswell? Ilari Stenroth
2013-07-30 19:35 ` Borislav Petkov
2013-07-30 19:44 ` Ilari Stenroth
2013-07-30 19:54 ` Borislav Petkov
2013-08-01 8:53 ` Alex Shi
2013-08-01 9:07 ` Alex Shi
2013-08-05 2:47 ` Alex Shi [this message]
2013-08-05 2:48 ` Alex Shi
2013-08-05 2:59 ` H. Peter Anvin
2013-08-17 20:53 ` Ilari Stenroth
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