From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wm0-f42.google.com (mail-wm0-f42.google.com [74.125.82.42]) by kanga.kvack.org (Postfix) with ESMTP id 988AF6B0254 for ; Tue, 15 Dec 2015 14:28:46 -0500 (EST) Received: by mail-wm0-f42.google.com with SMTP id l126so8655228wml.0 for ; Tue, 15 Dec 2015 11:28:46 -0800 (PST) Received: from mail.skyhub.de (mail.skyhub.de. [2a01:4f8:120:8448::d00d]) by mx.google.com with ESMTP id js6si3980438wjb.211.2015.12.15.11.28.45 for ; Tue, 15 Dec 2015 11:28:45 -0800 (PST) Date: Tue, 15 Dec 2015 20:28:37 +0100 From: Borislav Petkov Subject: Re: [PATCHV2 3/3] x86, ras: Add mcsafe_memcpy() function to recover from machine checks Message-ID: <20151215192837.GL25973@pd.tnic> References: <23b2515da9d06b198044ad83ca0a15ba38c24e6e.1449861203.git.tony.luck@intel.com> <20151215131135.GE25973@pd.tnic> <3908561D78D1C84285E8C5FCA982C28F39F8566E@ORSMSX114.amr.corp.intel.com> <20151215183924.GJ25973@pd.tnic> <94D0CD8314A33A4D9D801C0FE68B40295BE9F290@G4W3202.americas.hpqcorp.net> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <94D0CD8314A33A4D9D801C0FE68B40295BE9F290@G4W3202.americas.hpqcorp.net> Sender: owner-linux-mm@kvack.org List-ID: To: "Elliott, Robert (Persistent Memory)" Cc: Dan Williams , "Luck, Tony" , linux-nvdimm , X86 ML , "linux-kernel@vger.kernel.org" , Linux MM , Andy Lutomirski , Andrew Morton , Ingo Molnar On Tue, Dec 15, 2015 at 07:19:58PM +0000, Elliott, Robert (Persistent Memory) wrote: ... > Due to the historic long latency of storage devices, > applications don't re-read from storage again; they > save the results. > So, the streaming-load instructions are beneficial: That's the theory... Do you also have some actual performance numbers where non-temporal operations are better than the REP; MOVSB and *actually* show improvements? And no microbenchmarks please. Thanks. -- Regards/Gruss, Boris. ECO tip #101: Trim your mails when you reply. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org