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=-20.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, 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 68C54C07E95 for ; Mon, 19 Jul 2021 16:10:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5502C61413 for ; Mon, 19 Jul 2021 16:10:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1347827AbhGSP3d (ORCPT ); Mon, 19 Jul 2021 11:29:33 -0400 Received: from mail.kernel.org ([198.145.29.99]:38040 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1348166AbhGSPYh (ORCPT ); Mon, 19 Jul 2021 11:24:37 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 7F1FD60FDA; Mon, 19 Jul 2021 16:02:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1626710556; bh=vSVAZJAf9NUT16t6rsVFqUNTQln4OjKyDGN+FG2NMHk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=mWMQrCWWXCryrU2DHkgqHwbbfU+pBxT82nTaAnVPqcmkXcSJE00CLG77kPosB6Y8w GkBPiDHJ+o6S1NMcZIYxr5E771dlbB5k+Q4nWsFnZg8swoznFB6K8PSTIOuQ+CYtGl lCCE/smPeU88iUefmY+RvN6sMpmNcygNA8hWPH98= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Zenghui Yu , vkuznets@redhat.com, wanghaibin.wang@huawei.com, Christian Borntraeger Subject: [PATCH 5.13 005/351] KVM: selftests: do not require 64GB in set_memory_region_test Date: Mon, 19 Jul 2021 16:49:11 +0200 Message-Id: <20210719144944.712904163@linuxfoundation.org> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20210719144944.537151528@linuxfoundation.org> References: <20210719144944.537151528@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Christian Borntraeger commit cd4220d23bf3f43cf720e82bdee681f383433ae2 upstream. 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. Cc: Zenghui Yu Cc: vkuznets@redhat.com Cc: wanghaibin.wang@huawei.com Cc: stable@vger.kernel.org Fixes: 309505dd5685 ("KVM: selftests: Fix mapping length truncation in m{,un}map()") Tested-by: Zenghui Yu Link: https://lore.kernel.org/kvm/20210701160425.33666-1-borntraeger@de.ibm.com/ Signed-off-by: Christian Borntraeger Signed-off-by: Greg Kroah-Hartman --- tools/testing/selftests/kvm/set_memory_region_test.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/kvm/set_memory_region_test.c b/tools/testing/selftests/kvm/set_memory_region_test.c index d8812f27648c..d31f54ac4e98 100644 --- a/tools/testing/selftests/kvm/set_memory_region_test.c +++ b/tools/testing/selftests/kvm/set_memory_region_test.c @@ -377,7 +377,8 @@ static void test_add_max_memory_regions(void) (max_mem_slots - 1), MEM_REGION_SIZE >> 10); mem = mmap(NULL, (size_t)max_mem_slots * MEM_REGION_SIZE + alignment, - PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); + PROT_READ | PROT_WRITE, + MAP_PRIVATE | MAP_ANONYMOUS | MAP_NORESERVE, -1, 0); TEST_ASSERT(mem != MAP_FAILED, "Failed to mmap() host"); mem_aligned = (void *)(((size_t) mem + alignment - 1) & ~(alignment - 1)); -- 2.32.0