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GET /api/patches/1289/?format=api
{ "id": 1289, "url": "http://patchwork.ozlabs.org/api/patches/1289/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/1222266548.4257.26.camel@johannes.berg/", "project": { "id": 2, "url": "http://patchwork.ozlabs.org/api/projects/2/?format=api", "name": "Linux PPC development", "link_name": "linuxppc-dev", "list_id": "linuxppc-dev.lists.ozlabs.org", "list_email": "linuxppc-dev@lists.ozlabs.org", "web_url": "https://github.com/linuxppc/wiki/wiki", "scm_url": "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git", "webscm_url": "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/", "list_archive_url": "https://lore.kernel.org/linuxppc-dev/", "list_archive_url_format": "https://lore.kernel.org/linuxppc-dev/{}/", "commit_url_format": "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/commit/?id={}" }, "msgid": "<1222266548.4257.26.camel@johannes.berg>", "list_archive_url": "https://lore.kernel.org/linuxppc-dev/1222266548.4257.26.camel@johannes.berg/", "date": "2008-09-24T14:29:08", "name": "[v2] powerpc: enforce sane MAX_ORDER", "commit_ref": "ebe40c5c4c888f2cbfd9f0880a8bc072e6fc3a0d", "pull_url": null, "state": "accepted", "archived": true, "hash": "fa9560af2f4b990630b0d55b8acd6b05dfbeed3f", "submitter": { "id": 265, "url": "http://patchwork.ozlabs.org/api/people/265/?format=api", "name": "Johannes Berg", "email": "johannes@sipsolutions.net" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/1222266548.4257.26.camel@johannes.berg/mbox/", "series": [], "comments": "http://patchwork.ozlabs.org/api/patches/1289/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/1289/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@ozlabs.org>", "X-Original-To": [ "patchwork-incoming@ozlabs.org", "linuxppc-dev@ozlabs.org" ], "Delivered-To": [ "patchwork-incoming@ozlabs.org", "linuxppc-dev@ozlabs.org" ], "Received": [ "from ozlabs.org (localhost [127.0.0.1])\n\tby ozlabs.org (Postfix) with ESMTP id 70DD2DE171\n\tfor <patchwork-incoming@ozlabs.org>;\n\tThu, 25 Sep 2008 00:30:15 +1000 (EST)", "from sipsolutions.net (xc.sipsolutions.net [83.246.72.84])\n\t(using TLSv1 with cipher AES256-SHA (256/256 bits))\n\t(Client did not present a certificate)\n\tby ozlabs.org (Postfix) with ESMTPS id 0B218DDF96\n\tfor <linuxppc-dev@ozlabs.org>; Thu, 25 Sep 2008 00:29:59 +1000 (EST)", "by sipsolutions.net with esmtpsa\n\t(TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32)\n\t(Exim 4.69) (envelope-from <johannes@sipsolutions.net>)\n\tid 1KiVNJ-0006hs-Bk; Wed, 24 Sep 2008 16:29:53 +0200" ], "Subject": "[PATCH v2] powerpc: enforce sane MAX_ORDER", "From": "Johannes Berg <johannes@sipsolutions.net>", "To": "Kumar Gala <galak@kernel.crashing.org>", "In-Reply-To": "<61059ECE-2B42-46B3-B5B3-E5CFA3A5EFC9@kernel.crashing.org>", "References": "<1222262654.4257.4.camel@johannes.berg>\n\t<B38CBE3A-B9DA-44BA-8646-AEE81FB82437@kernel.crashing.org>\n\t<1222265583.4257.21.camel@johannes.berg>\n\t<61059ECE-2B42-46B3-B5B3-E5CFA3A5EFC9@kernel.crashing.org>", "Date": "Wed, 24 Sep 2008 16:29:08 +0200", "Message-Id": "<1222266548.4257.26.camel@johannes.berg>", "Mime-Version": "1.0", "X-Mailer": "Evolution 2.22.3.1 ", "Cc": "linuxppc-dev list <linuxppc-dev@ozlabs.org>,\n\tPaul Mackerras <paulus@samba.org>", "X-BeenThere": "linuxppc-dev@ozlabs.org", "X-Mailman-Version": "2.1.11", "Precedence": "list", "List-Id": "Linux on PowerPC Developers Mail List <linuxppc-dev.ozlabs.org>", "List-Unsubscribe": "<https://ozlabs.org/mailman/options/linuxppc-dev>,\n\t<mailto:linuxppc-dev-request@ozlabs.org?subject=unsubscribe>", "List-Archive": "<http://ozlabs.org/pipermail/linuxppc-dev>", "List-Post": "<mailto:linuxppc-dev@ozlabs.org>", "List-Help": "<mailto:linuxppc-dev-request@ozlabs.org?subject=help>", "List-Subscribe": "<https://ozlabs.org/mailman/listinfo/linuxppc-dev>,\n\t<mailto:linuxppc-dev-request@ozlabs.org?subject=subscribe>", "Content-Type": "text/plain; charset=\"us-ascii\"", "Content-Transfer-Encoding": "7bit", "Sender": "linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@ozlabs.org", "Errors-To": "linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@ozlabs.org" }, "content": "powerpc uses CONFIG_FORCE_MAX_ZONEORDER, and some things depend on it\nbeing at least 10 when 64k pages are not configured (notably the dart\niommu code with CONFIG_PM). The defaults are fine, but when going from a\n64K pages config to one without 64K pages, MAX_ORDER stays at 9 which is\ntoo low for 4K pages.\n\nThis patch makes the Kconfig enforce at least the defaults.\n\nSigned-off-by: Johannes Berg <johannes@sipsolutions.net>\n---\n\n> We'll I'm ok with that, but I dont think we should be values that\n> make \n> no sense. 64 would seem the max even in a 64-bit system.\n\nIndeed, it makes little sense to allow you to set more than the address\nspace, so here's a version with max 64.", "diff": "--- a/arch/powerpc/Kconfig\n+++ b/arch/powerpc/Kconfig\n@@ -415,8 +415,11 @@ config PPC_64K_PAGES\n \n config FORCE_MAX_ZONEORDER\n \tint \"Maximum zone order\"\n+\trange 9 64 if PPC_64K_PAGES\n \tdefault \"9\" if PPC_64K_PAGES\n+\trange 13 64 if PPC64 && !PPC_64K_PAGES\n \tdefault \"13\" if PPC64 && !PPC_64K_PAGES\n+\trange 11 64\n \tdefault \"11\"\n \thelp\n \t The kernel memory allocator divides physically contiguous memory\n", "prefixes": [ "v2" ] }