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GET /api/patches/73047/?format=api
{ "id": 73047, "url": "http://patchwork.dpdk.org/api/patches/73047/?format=api", "web_url": "http://patchwork.dpdk.org/project/dpdk/patch/20200703185741.22184-2-honnappa.nagarahalli@arm.com/", "project": { "id": 1, "url": "http://patchwork.dpdk.org/api/projects/1/?format=api", "name": "DPDK", "link_name": "dpdk", "list_id": "dev.dpdk.org", "list_email": "dev@dpdk.org", "web_url": "http://core.dpdk.org", "scm_url": "git://dpdk.org/dpdk", "webscm_url": "http://git.dpdk.org/dpdk", "list_archive_url": "https://inbox.dpdk.org/dev", "list_archive_url_format": "https://inbox.dpdk.org/dev/{}", "commit_url_format": "" }, "msgid": "<20200703185741.22184-2-honnappa.nagarahalli@arm.com>", "list_archive_url": "https://inbox.dpdk.org/dev/20200703185741.22184-2-honnappa.nagarahalli@arm.com", "date": "2020-07-03T18:57:40", "name": "[v3,2/3] doc: update armv8-a IO barrier changes", "commit_ref": null, "pull_url": null, "state": "superseded", "archived": true, "hash": "85008fff9dd6ea77eafdfa975f1564b1eac9794f", "submitter": { "id": 1045, "url": "http://patchwork.dpdk.org/api/people/1045/?format=api", "name": "Honnappa Nagarahalli", "email": "honnappa.nagarahalli@arm.com" }, "delegate": { "id": 1, "url": "http://patchwork.dpdk.org/api/users/1/?format=api", "username": "tmonjalo", "first_name": "Thomas", "last_name": "Monjalon", "email": "thomas@monjalon.net" }, "mbox": "http://patchwork.dpdk.org/project/dpdk/patch/20200703185741.22184-2-honnappa.nagarahalli@arm.com/mbox/", "series": [ { "id": 10784, "url": "http://patchwork.dpdk.org/api/series/10784/?format=api", "web_url": "http://patchwork.dpdk.org/project/dpdk/list/?series=10784", "date": "2020-07-03T18:57:39", "name": "[v3,1/3] eal: adjust barriers for IO on Armv8-a", "version": 3, "mbox": "http://patchwork.dpdk.org/series/10784/mbox/" } ], "comments": "http://patchwork.dpdk.org/api/patches/73047/comments/", "check": "fail", "checks": "http://patchwork.dpdk.org/api/patches/73047/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<dev-bounces@dpdk.org>", "X-Original-To": "patchwork@inbox.dpdk.org", "Delivered-To": "patchwork@inbox.dpdk.org", "Received": [ "from dpdk.org (dpdk.org [92.243.14.124])\n\tby inbox.dpdk.org (Postfix) with ESMTP id 9D9E2A0524;\n\tFri, 3 Jul 2020 20:58:03 +0200 (CEST)", "from [92.243.14.124] (localhost [127.0.0.1])\n\tby dpdk.org (Postfix) with ESMTP id 6E79F1DCE1;\n\tFri, 3 Jul 2020 20:58:03 +0200 (CEST)", "from foss.arm.com (foss.arm.com [217.140.110.172])\n by dpdk.org (Postfix) with ESMTP id D46001DCE0\n for <dev@dpdk.org>; Fri, 3 Jul 2020 20:58:01 +0200 (CEST)", "from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14])\n by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 4BDD62F;\n Fri, 3 Jul 2020 11:58:01 -0700 (PDT)", "from qc2400f-1.austin.arm.com (qc2400f-1.austin.arm.com\n [10.118.12.27])\n by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 431DE3F68F;\n Fri, 3 Jul 2020 11:58:01 -0700 (PDT)" ], "From": "Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>", "To": "dev@dpdk.org, honnappa.nagarahalli@arm.com, ruifeng.wang@arm.com,\n jerinj@marvell.com, hemant.agrawal@nxp.com, ajit.khaparde@broadcom.com,\n igorch@amazon.com, thomas@monjalon.net, viacheslavo@mellanox.com,\n arybchenko@solarflare.com, bruce.richardson@intel.com", "Cc": "nd@arm.com", "Date": "Fri, 3 Jul 2020 13:57:40 -0500", "Message-Id": "<20200703185741.22184-2-honnappa.nagarahalli@arm.com>", "X-Mailer": "git-send-email 2.17.1", "In-Reply-To": "<20200703185741.22184-1-honnappa.nagarahalli@arm.com>", "References": "<20200410164127.54229-1-gavin.hu@arm.com>\n <20200703185741.22184-1-honnappa.nagarahalli@arm.com>", "Subject": "[dpdk-dev] [PATCH v3 2/3] doc: update armv8-a IO barrier changes", "X-BeenThere": "dev@dpdk.org", "X-Mailman-Version": "2.1.15", "Precedence": "list", "List-Id": "DPDK patches and discussions <dev.dpdk.org>", "List-Unsubscribe": "<https://mails.dpdk.org/options/dev>,\n <mailto:dev-request@dpdk.org?subject=unsubscribe>", "List-Archive": "<http://mails.dpdk.org/archives/dev/>", "List-Post": "<mailto:dev@dpdk.org>", "List-Help": "<mailto:dev-request@dpdk.org?subject=help>", "List-Subscribe": "<https://mails.dpdk.org/listinfo/dev>,\n <mailto:dev-request@dpdk.org?subject=subscribe>", "Errors-To": "dev-bounces@dpdk.org", "Sender": "\"dev\" <dev-bounces@dpdk.org>" }, "content": "Updated the use of DMB instruction in rte_*mb APIs for Armv8-a.\n\nSigned-off-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>\n---\n doc/guides/rel_notes/release_20_08.rst | 7 +++++++\n 1 file changed, 7 insertions(+)", "diff": "diff --git a/doc/guides/rel_notes/release_20_08.rst b/doc/guides/rel_notes/release_20_08.rst\nindex 5cbc4ce14..15c21996d 100644\n--- a/doc/guides/rel_notes/release_20_08.rst\n+++ b/doc/guides/rel_notes/release_20_08.rst\n@@ -56,6 +56,13 @@ New Features\n Also, make sure to start the actual text at the margin.\n =========================================================\n \n+* **rte_*mb APIs are updated to use DMB instruction.**\n+\n+ Armv8-a memory model has been strengthened to require other-multi-copy\n+ atomicity. This allows for using DMB instruction instead of DSB for IO\n+ barriers. rte_*mb APIs, for Armv8-a platforms, are changed to use DMB\n+ instruction to reflect this.\n+\n * **Updated PCAP driver.**\n \n Updated PCAP driver with new features and improvements, including:\n", "prefixes": [ "v3", "2/3" ] }