From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from gate.crashing.org (gate.crashing.org [63.228.1.57]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id 33B482C00F3 for ; Sat, 27 Jul 2013 08:26:50 +1000 (EST) Message-ID: <1374877600.9200.28.camel@pasglop> Subject: Re: [PATCH 4/4] kvm: powerpc: set cache coherency only for RAM pages From: Benjamin Herrenschmidt To: Bhushan Bharat-R65777 Date: Sat, 27 Jul 2013 08:26:40 +1000 In-Reply-To: <6A3DF150A5B70D4F9B66A25E3F7C888D070E5761@039-SN2MPN1-013.039d.mgd.msft.net> References: <1374817613-20169-1-git-send-email-Bharat.Bhushan@freescale.com> <1374817613-20169-4-git-send-email-Bharat.Bhushan@freescale.com> <1374827190.6142.124.camel@pasglop> <6CF0D65E-76B6-4CDD-BADC-44DCCC8CAFF6@suse.de> <6A3DF150A5B70D4F9B66A25E3F7C888D070E5761@039-SN2MPN1-013.039d.mgd.msft.net> Content-Type: text/plain; charset="UTF-8" Mime-Version: 1.0 Cc: Wood Scott-B07421 , "linuxppc-dev@lists.ozlabs.org" , Alexander Graf , "kvm-ppc@vger.kernel.org" , "kvm@vger.kernel.org" List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Fri, 2013-07-26 at 15:03 +0000, Bhushan Bharat-R65777 wrote: > Will not searching the Linux PTE is a overkill? That's the best approach. Also we are searching it already to resolve the page fault. That does mean we search twice but on the other hand that also means it's hot in the cache. Cheers, Ben