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{ "id": 813766, "url": "http://patchwork.ozlabs.org/api/covers/813766/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-ide/cover/20170914103536.7650-1-hdegoede@redhat.com/", "project": { "id": 13, "url": "http://patchwork.ozlabs.org/api/projects/13/?format=api", "name": "Linux IDE development", "link_name": "linux-ide", "list_id": "linux-ide.vger.kernel.org", "list_email": "linux-ide@vger.kernel.org", "web_url": null, "scm_url": null, "webscm_url": null, "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20170914103536.7650-1-hdegoede@redhat.com>", "list_archive_url": null, "date": "2017-09-14T10:35:35", "name": "[0/1] libata: Add new med_power_with_dipm link_power_management_policy setting", "submitter": { "id": 1893, "url": "http://patchwork.ozlabs.org/api/people/1893/?format=api", "name": "Hans de Goede", "email": "hdegoede@redhat.com" }, "mbox": "http://patchwork.ozlabs.org/project/linux-ide/cover/20170914103536.7650-1-hdegoede@redhat.com/mbox/", "series": [ { "id": 3063, "url": "http://patchwork.ozlabs.org/api/series/3063/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-ide/list/?series=3063", "date": "2017-09-14T10:35:36", "name": "libata: Add new med_power_with_dipm link_power_management_policy setting", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/3063/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/covers/813766/comments/", "headers": { "Return-Path": "<linux-ide-owner@vger.kernel.org>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming@bilbo.ozlabs.org", "Authentication-Results": [ "ozlabs.org;\n\tspf=none (mailfrom) smtp.mailfrom=vger.kernel.org\n\t(client-ip=209.132.180.67; helo=vger.kernel.org;\n\tenvelope-from=linux-ide-owner@vger.kernel.org;\n\treceiver=<UNKNOWN>)", "ext-mx07.extmail.prod.ext.phx2.redhat.com;\n\tdmarc=none (p=none dis=none) header.from=redhat.com", "ext-mx07.extmail.prod.ext.phx2.redhat.com;\n\tspf=fail smtp.mailfrom=hdegoede@redhat.com" ], "Received": [ "from vger.kernel.org (vger.kernel.org [209.132.180.67])\n\tby ozlabs.org (Postfix) with ESMTP id 3xtFMb058Jz9sPs\n\tfor <incoming@patchwork.ozlabs.org>;\n\tThu, 14 Sep 2017 20:36:59 +1000 (AEST)", "(majordomo@vger.kernel.org) by vger.kernel.org via listexpand\n\tid S1751880AbdINKg1 (ORCPT <rfc822;incoming@patchwork.ozlabs.org>);\n\tThu, 14 Sep 2017 06:36:27 -0400", "from mx1.redhat.com ([209.132.183.28]:45902 \"EHLO mx1.redhat.com\"\n\trhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP\n\tid S1751795AbdINKfi (ORCPT <rfc822;linux-ide@vger.kernel.org>);\n\tThu, 14 Sep 2017 06:35:38 -0400", "from smtp.corp.redhat.com\n\t(int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14])\n\t(using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits))\n\t(No client certificate requested)\n\tby mx1.redhat.com (Postfix) with ESMTPS id 22C6AC047B70;\n\tThu, 14 Sep 2017 10:35:38 +0000 (UTC)", "from shalem.localdomain.com (ovpn-117-208.ams2.redhat.com\n\t[10.36.117.208])\n\tby smtp.corp.redhat.com (Postfix) with ESMTP id 0BA5B6C935;\n\tThu, 14 Sep 2017 10:35:36 +0000 (UTC)" ], "DMARC-Filter": "OpenDMARC Filter v1.3.2 mx1.redhat.com 22C6AC047B70", "From": "Hans de Goede <hdegoede@redhat.com>", "To": "Tejun Heo <tj@kernel.org>", "Cc": "Hans de Goede <hdegoede@redhat.com>,\n\tMatthew Garrett <mjg59@srcf.ucam.org>,\n\tlinux-ide@vger.kernel.org, linux-kernel@vger.kernel.org", "Subject": "[PATCH 0/1] libata: Add new med_power_with_dipm\n\tlink_power_management_policy setting", "Date": "Thu, 14 Sep 2017 12:35:35 +0200", "Message-Id": "<20170914103536.7650-1-hdegoede@redhat.com>", "X-Scanned-By": "MIMEDefang 2.79 on 10.5.11.14", "X-Greylist": "Sender IP whitelisted, not delayed by milter-greylist-4.5.16\n\t(mx1.redhat.com [10.5.110.31]);\n\tThu, 14 Sep 2017 10:35:38 +0000 (UTC)", "Sender": "linux-ide-owner@vger.kernel.org", "Precedence": "bulk", "List-ID": "<linux-ide.vger.kernel.org>", "X-Mailing-List": "linux-ide@vger.kernel.org" }, "content": "Hi All,\n\nAs described by Matthew Garret quite a while back:\nhttps://mjg59.dreamwidth.org/34868.html\n\nOn Intel CPUs starting with the Haswell generation SATA link power\nmanagement can save a significant amount of power.\n\nPrevious attempts to try and enable SATA LPM by default have gotten stuck\non ome reports of some disks / SSDs not liking min_power leading to system\ncrashes and in some cases even data corruption has been reported.\n\nThis patch is another attempt to make the default Windows IRST driver\nsettings Matthew found available under Linux, but instead of changing\nmedium_power and potentially introducing regressions, this commit adds\na new med_power_with_dipm setting.\n\nI've done a blog post asking people to test this new settings on laptops:\nhttps://hansdegoede.livejournal.com/18412.html\n\nAs mentioned there my goal is to enable med_power_with_dipm as default\nLPM setting for laptops for Fedora 28 (to be released aprox. May 2018).\n\nHow exactly this will be done is still up for debate, one option would\nbe a kernel patch which recognizes the mobile variant of Intel's chipset\nand changes the default on those, another option is punting this to\nuserspace.\n\nRegards,\n\nHans\n--\nTo unsubscribe from this list: send the line \"unsubscribe linux-ide\" in\nthe body of a message to majordomo@vger.kernel.org\nMore majordomo info at http://vger.kernel.org/majordomo-info.html" }