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: 12183565 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 DCECFC43461 for ; Mon, 5 Apr 2021 20:41:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9C727613CD for ; Mon, 5 Apr 2021 20:41:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240609AbhDEUlt (ORCPT ); Mon, 5 Apr 2021 16:41:49 -0400 Received: from mga02.intel.com ([134.134.136.20]:54275 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240500AbhDEUlr (ORCPT ); Mon, 5 Apr 2021 16:41:47 -0400 IronPort-SDR: voWszRK1kPU0fW71aDRKvntyJeSCnk2nuh//fZ3fG8zji9FeB4oeAimOm77I2MUXlSW25NOWtk yexhh16/bxqA== X-IronPort-AV: E=McAfee;i="6000,8403,9945"; a="180051526" X-IronPort-AV: E=Sophos;i="5.81,307,1610438400"; d="scan'208";a="180051526" Received: from orsmga007.jf.intel.com ([10.7.209.58]) by orsmga101.jf.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 Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org X-Patchwork-State: RFC 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);