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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 65E44C433F5 for ; Fri, 25 Feb 2022 13:19:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239591AbiBYNUD (ORCPT ); Fri, 25 Feb 2022 08:20:03 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55976 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235620AbiBYNUC (ORCPT ); Fri, 25 Feb 2022 08:20:02 -0500 Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com [148.163.156.1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9AAD027C224; Fri, 25 Feb 2022 05:19:30 -0800 (PST) Received: from pps.filterd (m0098410.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.1.2/8.16.1.2) with SMTP id 21PBMjR4029361; Fri, 25 Feb 2022 13:19:12 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=from : to : cc : cc : subject : in-reply-to : in-reply-to : date : message-id : mime-version : content-type; s=pp1; bh=O0Xj/BZppjXxOPhFAwSiE1XvJJ1R4pVra9+KEFRoASw=; b=Bb+YRQU8R3upuPRzTD/K0HDKveVdRoVOz5kTjosFF0juuB8CML+A0Fcq6kbF9DKuAL1q 4syLg8JJbpQNH7BMIIXt7Cpu36ru8BIoKEDcHqD9xoP6K4IMki0qJvKzWKLDINO6Oxax Ejc9tdiertBY5W3+IRjqZqjq6RTWJre324KpUmLPSNVOKuSw/OCE/Tcq/6pL1J7246EE nj2MatvpYokE4PfDYbVvMSKOMtkVMA47joK454TBPUD0KuUWIhoYN8REUOpqgm7y3FdL fPiGPf49xIBLaHmWse0JUPHoO+9gImKQmkQ9jeYMhnggfUGU0mKugdw89LMQg2P7HEaC Gw== Received: from pps.reinject (localhost [127.0.0.1]) by mx0a-001b2d01.pphosted.com with ESMTP id 3edwkfe46p-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 25 Feb 2022 13:19:12 +0000 Received: from m0098410.ppops.net (m0098410.ppops.net [127.0.0.1]) by pps.reinject (8.16.0.43/8.16.0.43) with SMTP id 21PCu0LD011047; Fri, 25 Feb 2022 13:19:11 GMT Received: from ppma05fra.de.ibm.com (6c.4a.5195.ip4.static.sl-reverse.com [149.81.74.108]) by mx0a-001b2d01.pphosted.com with ESMTP id 3edwkfe459-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 25 Feb 2022 13:19:11 +0000 Received: from pps.filterd (ppma05fra.de.ibm.com [127.0.0.1]) by ppma05fra.de.ibm.com (8.16.1.2/8.16.1.2) with SMTP id 21PD8PQ2025194; Fri, 25 Feb 2022 13:19:09 GMT Received: from b06avi18626390.portsmouth.uk.ibm.com (b06avi18626390.portsmouth.uk.ibm.com [9.149.26.192]) by ppma05fra.de.ibm.com with ESMTP id 3ear69xan9-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 25 Feb 2022 13:19:09 +0000 Received: from b06wcsmtp001.portsmouth.uk.ibm.com (b06wcsmtp001.portsmouth.uk.ibm.com [9.149.105.160]) by b06avi18626390.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 21PD8MGm50987422 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 25 Feb 2022 13:08:22 GMT Received: from b06wcsmtp001.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 80BEBA4060; Fri, 25 Feb 2022 13:19:06 +0000 (GMT) Received: from b06wcsmtp001.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 5EF54A405C; Fri, 25 Feb 2022 13:19:06 +0000 (GMT) Received: from localhost (unknown [9.171.60.182]) by b06wcsmtp001.portsmouth.uk.ibm.com (Postfix) with ESMTP; Fri, 25 Feb 2022 13:19:06 +0000 (GMT) From: Alexander Egorenkov To: jolsa@redhat.com Cc: andrii.nakryiko@gmail.com, andrii@kernel.org, ast@kernel.org, bpf@vger.kernel.org, daniel@iogearbox.net, john.fastabend@gmail.com, kafai@fb.com, kpsingh@chromium.org, netdev@vger.kernel.org, songliubraving@fb.com, yhs@fb.com Subject: Re: [RFC bpf-next 0/2] bpf: Fix BTF data for modules In-Reply-To: In-Reply-To: Date: Fri, 25 Feb 2022 14:19:06 +0100 Message-ID: <878rtz84ol.fsf@oc8242746057.ibm.com> MIME-Version: 1.0 Content-Type: text/plain X-TM-AS-GCONF: 00 X-Proofpoint-GUID: hO5DsCw_CV9bRmbYLBIxBlnVtT46M5h9 X-Proofpoint-ORIG-GUID: M-JtoAGusO7akDLuUd2RjsVppHkAx3kb X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.816,Hydra:6.0.425,FMLib:17.11.64.514 definitions=2022-02-25_07,2022-02-25_01,2022-02-23_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 clxscore=1011 mlxscore=0 lowpriorityscore=0 phishscore=0 adultscore=0 suspectscore=0 bulkscore=0 mlxlogscore=572 priorityscore=1501 impostorscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2201110000 definitions=main-2202250074 Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org Hi Jiri and Andrii, we also have discovered this problem recently on Fedora 35 and linux-next. Is there any status update here ? @Jiri Is the increase of total kernel modules size by 20MB really a big deal on s390x ? We would like to have it enabled on our architecture again ;-) And 20MB seems okay or am i missing something maybe ? Another question i have wrt to BTF is why is it necessary to have e.g. _struct module_ be present within kernel module BTF if it is already present within vmlinux's one ? Can't the one from vmlinux be reused for kernel modules as well, they should be identical, right ? Thanks Regards Alex