Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753543AbbK3Imz (ORCPT ); Mon, 30 Nov 2015 03:42:55 -0500 Received: from smtprelay0069.hostedemail.com ([216.40.44.69]:44699 "EHLO smtprelay.hostedemail.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753110AbbK3Imx (ORCPT ); Mon, 30 Nov 2015 03:42:53 -0500 X-Session-Marker: 6A6F6540706572636865732E636F6D X-Spam-Summary: 2,0,0,,d41d8cd98f00b204,joe@perches.com,:::::::::,RULES_HIT:41:355:379:541:599:988:989:1260:1277:1311:1313:1314:1345:1359:1373:1437:1515:1516:1518:1534:1537:1567:1593:1594:1711:1714:1730:1747:1777:1792:2393:2559:2562:2828:3138:3139:3140:3141:3142:3622:3865:3866:3867:3871:4321:5007:6261:7903:10004:10400:10848:11026:11232:11658:11914:12296:12517:12519:12740:13069:13311:13357:14659:21080:30054:30091,0,RBL:none,CacheIP:none,Bayesian:0.5,0.5,0.5,Netcheck:none,DomainCache:0,MSF:not bulk,SPF:fn,MSBL:0,DNSBL:none,Custom_rules:0:0:0,LFtime:1,LUA_SUMMARY:none X-HE-Tag: trade36_8d52f13e57b5a X-Filterd-Recvd-Size: 1241 Message-ID: <1448872969.3032.1.camel@perches.com> Subject: Re: [PATCH] vhost: replace % with & on data path From: Joe Perches To: "Michael S. Tsirkin" , linux-kernel@vger.kernel.org Cc: kvm@vger.kernel.org, virtualization@lists.linux-foundation.org, netdev@vger.kernel.org Date: Mon, 30 Nov 2015 00:42:49 -0800 In-Reply-To: <1448872427-11623-1-git-send-email-mst@redhat.com> References: <1448872427-11623-1-git-send-email-mst@redhat.com> Content-Type: text/plain; charset="ISO-8859-1" X-Mailer: Evolution 3.16.5-1ubuntu3 Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 626 Lines: 19 On Mon, 2015-11-30 at 10:34 +0200, Michael S. Tsirkin wrote: > We know vring num is a power of 2, so use & > to mask the high bits. [] > diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c [] > @@ -1366,10 +1366,12 @@ int vhost_get_vq_desc(struct vhost_virtqueue *vq, > /* Only get avail ring entries after they have been exposed by guest. */ > smp_rmb(); > > + } ? -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/