From patchwork Mon Apr 5 20:37:11 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Edgecombe, Rick P" X-Patchwork-Id: 12183577 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id DABCEC433ED for ; Mon, 5 Apr 2021 20:41:41 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 55BFA613C6 for ; Mon, 5 Apr 2021 20:41:41 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 55BFA613C6 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 34B4C6B007D; Mon, 5 Apr 2021 16:41:40 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 237916B007B; Mon, 5 Apr 2021 16:41:40 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 024986B0078; Mon, 5 Apr 2021 16:41:39 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0142.hostedemail.com [216.40.44.142]) by kanga.kvack.org (Postfix) with ESMTP id D94C26B0073 for ; Mon, 5 Apr 2021 16:41:39 -0400 (EDT) Received: from smtpin16.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id 913FE83F1 for ; Mon, 5 Apr 2021 20:41:39 +0000 (UTC) X-FDA: 77999484318.16.C04739A Received: from mga05.intel.com (mga05.intel.com [192.55.52.43]) by imf02.hostedemail.com (Postfix) with ESMTP id 272C140002C0 for ; Mon, 5 Apr 2021 20:41:31 +0000 (UTC) IronPort-SDR: 3y6ZgSH8GzWgdRQbJbXQd0Y98+/jA37xRqHbvncfURe2css/DOZ8/9p26/NJhZpbtaZiKB1u5H rnzZ+WY1pjuQ== X-IronPort-AV: E=McAfee;i="6000,8403,9945"; a="278169244" X-IronPort-AV: E=Sophos;i="5.81,307,1610438400"; d="scan'208";a="278169244" Received: from orsmga007.jf.intel.com ([10.7.209.58]) by fmsmga105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Apr 2021 13:41:33 -0700 IronPort-SDR: nWL2dehIuIdFpPZ4amo3hpqkP2l9cuMSirVmKkTi1KXid4RjuNI928X96mGKNQpFtU89t0LHmq 2gfDbyTy7biw== X-IronPort-AV: E=Sophos;i="5.81,307,1610438400"; d="scan'208";a="418078038" Received: from rpedgeco-mobl3.amr.corp.intel.com (HELO localhost.intel.com) ([10.212.230.218]) by orsmga007-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Apr 2021 13:41:33 -0700 From: Rick Edgecombe To: akpm@linux-foundation.org, linux-mm@kvack.org, bpf@vger.kernel.org, dave.hansen@linux.intel.com, peterz@infradead.org, luto@kernel.org, jeyu@kernel.org Cc: linux-kernel@vger.kernel.org, ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org, hch@infradead.org, x86@kernel.org, Rick Edgecombe Subject: [RFC 3/3] x86/module: Use VM_GROUP_PAGES flag Date: Mon, 5 Apr 2021 13:37:11 -0700 Message-Id: <20210405203711.1095940-4-rick.p.edgecombe@intel.com> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210405203711.1095940-1-rick.p.edgecombe@intel.com> References: <20210405203711.1095940-1-rick.p.edgecombe@intel.com> MIME-Version: 1.0 X-Stat-Signature: 7mdda8n3rzez8brcnfor4amoe8s4hx8o X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: 272C140002C0 Received-SPF: none (intel.com>: No applicable sender policy available) receiver=imf02; identity=mailfrom; envelope-from=""; helo=mga05.intel.com; client-ip=192.55.52.43 X-HE-DKIM-Result: none/none X-HE-Tag: 1617655291-719376 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Callers of module_alloc() will set permissions on the allocation. Use the VM_GROUP_PAGES to reduce direct map breakage. Signed-off-by: Rick Edgecombe --- arch/x86/kernel/module.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kernel/module.c b/arch/x86/kernel/module.c index 34b153cbd4ac..9161ce0e987f 100644 --- a/arch/x86/kernel/module.c +++ b/arch/x86/kernel/module.c @@ -75,7 +75,7 @@ void *module_alloc(unsigned long size) p = __vmalloc_node_range(size, MODULE_ALIGN, MODULES_VADDR + get_module_load_offset(), MODULES_END, GFP_KERNEL, - PAGE_KERNEL, 0, NUMA_NO_NODE, + PAGE_KERNEL, VM_GROUP_PAGES, NUMA_NO_NODE, __builtin_return_address(0)); if (p && (kasan_module_alloc(p, size) < 0)) { vfree(p);