{"id":808255,"url":"http://patchwork.ozlabs.org/api/1.0/covers/808255/?format=json","project":{"id":19,"url":"http://patchwork.ozlabs.org/api/1.0/projects/19/?format=json","name":"Linux IMX development","link_name":"linux-imx","list_id":"linux-imx-kernel.lists.patchwork.ozlabs.org","list_email":"linux-imx-kernel@lists.patchwork.ozlabs.org","web_url":null,"scm_url":null,"webscm_url":null},"msgid":"","date":"2017-08-31T13:44:24","name":"[v2,0/4] SMMUv3 CMD_SYNC optimisation","submitter":{"id":65641,"url":"http://patchwork.ozlabs.org/api/1.0/people/65641/?format=json","name":"Robin Murphy","email":"robin.murphy@arm.com"},"series":[{"id":833,"url":"http://patchwork.ozlabs.org/api/1.0/series/833/?format=json","date":"2017-08-31T13:44:24","name":"SMMUv3 CMD_SYNC optimisation","version":2,"mbox":"http://patchwork.ozlabs.org/series/833/mbox/"}],"headers":{"Return-Path":"","X-Original-To":"incoming-imx@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming-imx@bilbo.ozlabs.org","Authentication-Results":["ozlabs.org;\n\tspf=none (mailfrom) smtp.mailfrom=lists.infradead.org\n\t(client-ip=65.50.211.133; helo=bombadil.infradead.org;\n\tenvelope-from=linux-arm-kernel-bounces+incoming-imx=patchwork.ozlabs.org@lists.infradead.org;\n\treceiver=)","ozlabs.org; dkim=pass (2048-bit key;\n\tunprotected) header.d=lists.infradead.org\n\theader.i=@lists.infradead.org\n\theader.b=\"pgrHrl6g\"; dkim-atps=neutral"],"Received":["from bombadil.infradead.org (bombadil.infradead.org\n\t[65.50.211.133])\n\t(using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256\n\tbits)) (No client certificate requested)\n\tby ozlabs.org (Postfix) with ESMTPS id 3xjkPx3XFTz9sPm\n\tfor ;\n\tThu, 31 Aug 2017 23:54:29 +1000 (AEST)","from localhost ([127.0.0.1] helo=bombadil.infradead.org)\n\tby bombadil.infradead.org with esmtp (Exim 4.87 #1 (Red Hat Linux))\n\tid 1dnPvK-0004dv-9e; Thu, 31 Aug 2017 13:54:22 +0000","from foss.arm.com ([217.140.101.70])\n\tby bombadil.infradead.org with esmtp (Exim 4.87 #1 (Red Hat Linux))\n\tid 1dnPmC-000658-3d for linux-arm-kernel@lists.infradead.org;\n\tThu, 31 Aug 2017 13:45:00 +0000","from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249])\n\tby usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id AB74980D;\n\tThu, 31 Aug 2017 06:44:35 -0700 (PDT)","from e110467-lin.cambridge.arm.com (e110467-lin.cambridge.arm.com\n\t[10.1.210.88])\n\tby usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id\n\t309763F578; Thu, 31 Aug 2017 06:44:34 -0700 (PDT)"],"DKIM-Signature":"v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed;\n\td=lists.infradead.org; s=bombadil.20170209; h=Sender:\n\tContent-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe:\n\tList-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:Message-Id:Date:\n\tSubject:To:From:Reply-To:Content-ID:Content-Description:Resent-Date:\n\tResent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:\n\tReferences:List-Owner; bh=ooK/D700rZZc4qfOIjufGDwJd3xNDzv7x4XUkH+gbCA=;\n\tb=pgr\n\tHrl6gWqhttJuZRkG+nN8gM2yC2vqWJywaL+sBgZaFzbiBvKktAhEQg4syIRUs4ZCNFUdnFJ62MHsD\n\tkKFms+ALZ+2dMs0k4mMd9nd2HxVTKVBR9arHLxk8gJmWE7TeIAP5HZb7V8V+MRG6pj259V60M1oHp\n\tDESwM9AzwAnFK2UMhy9E+W2kMvJjP9hh5jPnW21L9ojHcYyS8SFk322nSsJC49sN6vG2XYfxnhLZV\n\tvb2tT8WAH/WPnEG9+dqsQyarNwZ43AtyGRS8Q+ohp/FU269F0tRkHeIrGyf11RNNRkA2JBTbHCzDS\n\t1C9SCzhynNLxEM8HRgSKms4MJr+D2RQ==;","From":"Robin Murphy ","To":"will.deacon@arm.com","Subject":"[PATCH v2 0/4] SMMUv3 CMD_SYNC optimisation","Date":"Thu, 31 Aug 2017 14:44:24 +0100","Message-Id":"","X-Mailer":"git-send-email 2.13.4.dirty","X-CRM114-Version":"20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 ","X-CRM114-CacheID":"sfid-20170831_064456_334185_19CDE558 ","X-CRM114-Status":"UNSURE ( 5.38 )","X-CRM114-Notice":"Please train this message.","X-Spam-Score":"-6.9 (------)","X-Spam-Report":"SpamAssassin version 3.4.1 on bombadil.infradead.org summary:\n\tContent analysis details: (-6.9 points)\n\tpts rule name description\n\t---- ----------------------\n\t--------------------------------------------------\n\t-5.0 RCVD_IN_DNSWL_HI RBL: Sender listed at http://www.dnswl.org/,\n\thigh trust [217.140.101.70 listed in list.dnswl.org]\n\t-0.0 SPF_PASS SPF: sender matches SPF record\n\t-0.0 RP_MATCHES_RCVD Envelope sender domain matches handover relay\n\tdomain\n\t-1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1%\n\t[score: 0.0000]","X-BeenThere":"linux-arm-kernel@lists.infradead.org","X-Mailman-Version":"2.1.21","Precedence":"list","List-Unsubscribe":",\n\t","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n\t","Cc":"salil.mehta@huawei.com, jean-philippe.brucker@arm.com,\n\tiommu@lists.linux-foundation.org, nwatters@codeaurora.org,\n\tsgoutham@cavium.com, linux-arm-kernel@lists.infradead.org","MIME-Version":"1.0","Content-Type":"text/plain; charset=\"us-ascii\"","Content-Transfer-Encoding":"7bit","Sender":"\"linux-arm-kernel\" ","Errors-To":"linux-arm-kernel-bounces+incoming-imx=patchwork.ozlabs.org@lists.infradead.org","List-Id":"linux-imx-kernel.lists.patchwork.ozlabs.org"},"content":"Hi all,\n\nSince Nate reported a reasonable performance boost from the out-of-line\nMSI polling in v1 [1], I've now implemented the equivalent for cons\npolling as well - that has been boot-tested on D05 with some trivial I/O\nand at least doesn't seem to lock up or explode. There's also a little\ncosmetic tweaking to make the patches a bit cleaner as a series.\n\nRobin.\n\n[1] https://www.mail-archive.com/iommu@lists.linux-foundation.org/msg19657.html\n\nRobin Murphy (5):\n iommu/arm-smmu-v3: Specialise CMD_SYNC handling\n iommu/arm-smmu-v3: Forget about cmdq-sync interrupt\n iommu/arm-smmu-v3: Use CMD_SYNC completion interrupt\n iommu/arm-smmu-v3: Poll for CMD_SYNC outside cmdq lock\n iommu/arm-smmu-v3: Use burst-polling for sync completion\n\n drivers/iommu/arm-smmu-v3.c | 194 ++++++++++++++++++++++++++++++--------------\n 1 file changed, 135 insertions(+), 59 deletions(-)"}