From mboxrd@z Thu Jan 1 00:00:00 1970 From: Hollis Blanchard Subject: Re: [patch 2/2] KVM: switch to get_user_pages_fast Date: Wed, 17 Sep 2008 09:42:09 -0500 Message-ID: <1221662529.11337.0.camel@localhost.localdomain> References: <20080916235445.291854374@localhost.localdomain> <20080916235523.592326595@localhost.localdomain> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Cc: Avi Kivity , kvm@vger.kernel.org To: Marcelo Tosatti Return-path: Received: from e4.ny.us.ibm.com ([32.97.182.144]:39964 "EHLO e4.ny.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752454AbYIQOmf (ORCPT ); Wed, 17 Sep 2008 10:42:35 -0400 Received: from d01relay04.pok.ibm.com (d01relay04.pok.ibm.com [9.56.227.236]) by e4.ny.us.ibm.com (8.13.8/8.13.8) with ESMTP id m8HEgYvk019487 for ; Wed, 17 Sep 2008 10:42:34 -0400 Received: from d01av01.pok.ibm.com (d01av01.pok.ibm.com [9.56.224.215]) by d01relay04.pok.ibm.com (8.13.8/8.13.8/NCO v9.1) with ESMTP id m8HEgYgs239736 for ; Wed, 17 Sep 2008 10:42:34 -0400 Received: from d01av01.pok.ibm.com (loopback [127.0.0.1]) by d01av01.pok.ibm.com (8.12.11.20060308/8.13.3) with ESMTP id m8HEgXml009964 for ; Wed, 17 Sep 2008 10:42:34 -0400 In-Reply-To: <20080916235523.592326595@localhost.localdomain> Sender: kvm-owner@vger.kernel.org List-ID: On Tue, 2008-09-16 at 20:54 -0300, Marcelo Tosatti wrote: > plain text document attachment (kvm-use-fast-gup) > Convert gfn_to_pfn to use get_user_pages_fast, which can do lockless > pagetable lookups on x86. Kernel compilation on 4-way guest is 3.7% > faster on VMX. > > Signed-off-by: Marcelo Tosatti Acked-by: Hollis Blanchard -- Hollis Blanchard IBM Linux Technology Center