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=-6.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 A4887C07E9B for ; Wed, 21 Jul 2021 09:25:38 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 6A5EF611CE for ; Wed, 21 Jul 2021 09:25:38 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6A5EF611CE Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=huawei.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:Content-Type: Content-Transfer-Encoding:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:Date:Message-ID:From: References:CC:To:Subject:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=99gLr/iwOTIH3+46rTVD2MmvxjVfFH9wXiRjTjGQQUE=; b=XVggmCtGBeaoVa8N2ON9JsYos4 TJx32DvJz1DIYiav4ddm+P5LYXpFxFkGsz1VPZxWdjAGXPV3DQeJbaRK57Z9/dPizWEF3vQ2Z1r6y gey5AarLpvmTMU6jfJh/ClQowYu+ybKDWr+HXM1GFEuO/7kE9YhswFjxhcmS071KXBu5znz280lZZ a/B68w2sOvDAU7j9u8jRkzPm+nDIzIAXD7r8bUq/ql9pujEldoMTDtAERArip8pcWad3r2jD/kHsJ o5AZY/5+DhuCR8CFhMQAZUZLtTSN7XG17nP8lV2cF/n5Aie6F2wt5S8RnUm9C6ScQBIs48BrKqy27 KCFFWwOw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1m68SL-00F5Et-2n; Wed, 21 Jul 2021 09:23:57 +0000 Received: from frasgout.his.huawei.com ([185.176.79.56]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1m68SH-00F5DK-1u; Wed, 21 Jul 2021 09:23:54 +0000 Received: from fraeml740-chm.china.huawei.com (unknown [172.18.147.200]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4GV8s41q2Hz6D8mK; Wed, 21 Jul 2021 17:08:56 +0800 (CST) Received: from lhreml724-chm.china.huawei.com (10.201.108.75) by fraeml740-chm.china.huawei.com (10.206.15.221) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2176.2; Wed, 21 Jul 2021 11:23:41 +0200 Received: from [10.47.85.43] (10.47.85.43) by lhreml724-chm.china.huawei.com (10.201.108.75) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2176.2; Wed, 21 Jul 2021 10:23:41 +0100 Subject: Re: [bug report] iommu_dma_unmap_sg() is very slow then running IO from remote numa node To: Ming Lei CC: Robin Murphy , , Will Deacon , , , References: <23e7956b-f3b5-b585-3c18-724165994051@arm.com> From: John Garry Message-ID: <74537f9c-af5f-cd84-60ab-49ca6220310e@huawei.com> Date: Wed, 21 Jul 2021 10:23:38 +0100 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.12.1 MIME-Version: 1.0 In-Reply-To: Content-Language: en-US X-Originating-IP: [10.47.85.43] X-ClientProxiedBy: lhreml734-chm.china.huawei.com (10.201.108.85) To lhreml724-chm.china.huawei.com (10.201.108.75) X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210721_022353_292853_7BB938AB X-CRM114-Status: GOOD ( 11.26 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 21/07/2021 02:40, Ming Lei wrote: >> I think that you should see a significant performance boost. > There is build issue, please check your tree: > > MODPOST vmlinux.symvers > MODINFO modules.builtin.modinfo > GEN modules.builtin > LD .tmp_vmlinux.btf > ld: Unexpected GOT/PLT entries detected! > ld: Unexpected run-time procedure linkages detected! > ld: drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.o: in function `smmu_test_store': > /root/git/linux/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c:3892: undefined reference to `smmu_test_core' > BTF .btf.vmlinux.bin.o > pahole: .tmp_vmlinux.btf: No such file or directory > LD .tmp_vmlinux.kallsyms1 > .btf.vmlinux.bin.o: file not recognized: file format not recognized > make: *** [Makefile:1177: vmlinux] Error 1 Ah, sorry. I had some test code which was not properly guarded with necessary build switches. I have now removed that from the tree, so please re-pull. Thanks, John _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel