From mboxrd@z Thu Jan 1 00:00:00 1970 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=-10.3 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,MAILING_LIST_MULTI, NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=unavailable 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 9E18EC11F69 for ; Fri, 2 Jul 2021 06:49:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 874A26141D for ; Fri, 2 Jul 2021 06:49:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230095AbhGBGwL (ORCPT ); Fri, 2 Jul 2021 02:52:11 -0400 Received: from szxga02-in.huawei.com ([45.249.212.188]:9443 "EHLO szxga02-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230026AbhGBGwK (ORCPT ); Fri, 2 Jul 2021 02:52:10 -0400 Received: from dggemv703-chm.china.huawei.com (unknown [172.30.72.57]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4GGQbS4ggVzZppL; Fri, 2 Jul 2021 14:46:28 +0800 (CST) Received: from dggema764-chm.china.huawei.com (10.1.198.206) by dggemv703-chm.china.huawei.com (10.3.19.46) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256) id 15.1.2176.2; Fri, 2 Jul 2021 14:49:36 +0800 Received: from [10.174.185.179] (10.174.185.179) by dggema764-chm.china.huawei.com (10.1.198.206) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2176.2; Fri, 2 Jul 2021 14:49:35 +0800 Subject: Re: [PATCH] KVM: selftests: do not require 64GB in set_memory_region_test To: Christian Borntraeger CC: Shuah Khan , Paolo Bonzini , , , , , , References: <20210701160425.33666-1-borntraeger@de.ibm.com> From: Zenghui Yu Message-ID: <93ff00d3-b369-e00e-f172-7cc5375a6485@huawei.com> Date: Fri, 2 Jul 2021 14:49:35 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.9.0 MIME-Version: 1.0 In-Reply-To: <20210701160425.33666-1-borntraeger@de.ibm.com> Content-Type: text/plain; charset="utf-8"; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-Originating-IP: [10.174.185.179] X-ClientProxiedBy: dggems703-chm.china.huawei.com (10.3.19.180) To dggema764-chm.china.huawei.com (10.1.198.206) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org On 2021/7/2 0:04, Christian Borntraeger wrote: > Unless the user sets overcommit_memory or has plenty of swap, the latest > changes to the testcase will result in ENOMEM failures for hosts with > less than 64GB RAM. As we do not use much of the allocated memory, we > can use MAP_NORESERVE to avoid this error. Had a go on arm64: Tested-by: Zenghui Yu Thanks, Zenghui