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{ "id": 808255, "url": "http://patchwork.ozlabs.org/api/covers/808255/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-imx/cover/cover.1504182142.git.robin.murphy@arm.com/", "project": { "id": 19, "url": "http://patchwork.ozlabs.org/api/projects/19/?format=api", "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, "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<cover.1504182142.git.robin.murphy@arm.com>", "list_archive_url": null, "date": "2017-08-31T13:44:24", "name": "[v2,0/4] SMMUv3 CMD_SYNC optimisation", "submitter": { "id": 65641, "url": "http://patchwork.ozlabs.org/api/people/65641/?format=api", "name": "Robin Murphy", "email": "robin.murphy@arm.com" }, "mbox": "http://patchwork.ozlabs.org/project/linux-imx/cover/cover.1504182142.git.robin.murphy@arm.com/mbox/", "series": [ { "id": 833, "url": "http://patchwork.ozlabs.org/api/series/833/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-imx/list/?series=833", "date": "2017-08-31T13:44:24", "name": "SMMUv3 CMD_SYNC optimisation", "version": 2, "mbox": "http://patchwork.ozlabs.org/series/833/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/covers/808255/comments/", "headers": { "Return-Path": "<linux-arm-kernel-bounces+incoming-imx=patchwork.ozlabs.org@lists.infradead.org>", "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=<UNKNOWN>)", "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 <incoming-imx@patchwork.ozlabs.org>;\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 <robin.murphy@arm.com>", "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": "<cover.1504182142.git.robin.murphy@arm.com>", "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": "<http://lists.infradead.org/mailman/options/linux-arm-kernel>,\n\t<mailto:linux-arm-kernel-request@lists.infradead.org?subject=unsubscribe>", "List-Archive": "<http://lists.infradead.org/pipermail/linux-arm-kernel/>", "List-Post": "<mailto:linux-arm-kernel@lists.infradead.org>", "List-Help": "<mailto:linux-arm-kernel-request@lists.infradead.org?subject=help>", "List-Subscribe": "<http://lists.infradead.org/mailman/listinfo/linux-arm-kernel>,\n\t<mailto:linux-arm-kernel-request@lists.infradead.org?subject=subscribe>", "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\" <linux-arm-kernel-bounces@lists.infradead.org>", "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(-)" }