From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx0a-001b2d01.pphosted.com (mx0b-001b2d01.pphosted.com [148.163.158.5]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 3xD0Tz60vszDrFh for ; Fri, 21 Jul 2017 02:58:47 +1000 (AEST) Received: from pps.filterd (m0098421.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.21/8.16.0.21) with SMTP id v6KGrcp3003592 for ; Thu, 20 Jul 2017 12:58:45 -0400 Received: from e24smtp04.br.ibm.com (e24smtp04.br.ibm.com [32.104.18.25]) by mx0a-001b2d01.pphosted.com with ESMTP id 2btwac9svd-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Thu, 20 Jul 2017 12:58:45 -0400 Received: from localhost by e24smtp04.br.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Thu, 20 Jul 2017 13:58:43 -0300 Received: from d24av01.br.ibm.com (d24av01.br.ibm.com [9.8.31.91]) by d24relay03.br.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id v6KGsFK019988726 for ; Thu, 20 Jul 2017 13:54:16 -0300 Received: from d24av01.br.ibm.com (localhost [127.0.0.1]) by d24av01.br.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id v6KGwe1O020097 for ; Thu, 20 Jul 2017 13:58:40 -0300 From: Victor Aoqui To: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, aneesh.kumar@linux.vnet.ibm.com, mpe@ellerman.id.au, khandual@linux.vnet.ibm.com Cc: victora@br.ibm.com, victora@linux.vnet.ibm.com Subject: [PATCH v2] powerpc/mm: Implemented default_hugepagesz verification for powerpc Date: Thu, 20 Jul 2017 13:58:38 -0300 Message-Id: <20170720165838.3549-1-victora@linux.vnet.ibm.com> List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Implemented default hugepage size verification (default_hugepagesz=) in order to allow allocation of defined number of pages (hugepages=) only for supported hugepage sizes. Signed-off-by: Victor Aoqui --- v2: - Renamed default_hugepage_setup_sz function to hugetlb_default_size_setup; - Added powerpc string to error message. arch/powerpc/mm/hugetlbpage.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/arch/powerpc/mm/hugetlbpage.c b/arch/powerpc/mm/hugetlbpage.c index e1bf5ca..3a142fe 100644 --- a/arch/powerpc/mm/hugetlbpage.c +++ b/arch/powerpc/mm/hugetlbpage.c @@ -780,6 +780,21 @@ static int __init hugepage_setup_sz(char *str) } __setup("hugepagesz=", hugepage_setup_sz); +static int __init hugetlb_default_size_setup(char *str) +{ + unsigned long long size; + + size = memparse(str, &str); + + if (add_huge_page_size(size) != 0) { + hugetlb_bad_size(); + pr_err("Invalid powerpc default huge page size specified(%llu)\n", size); + } + + return 1; +} +__setup("default_hugepagesz=", hugetlb_default_size_setup); + struct kmem_cache *hugepte_cache; static int __init hugetlbpage_init(void) { -- 1.8.3.1