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=-0.7 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 033C4C433DF for ; Wed, 17 Jun 2020 12:03:57 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (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 CA900207DD for ; Wed, 17 Jun 2020 12:03:56 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CA900207DD Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=bugs.launchpad.net Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:42046 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jlWnM-0005Ua-3a for qemu-devel@archiver.kernel.org; Wed, 17 Jun 2020 08:03:56 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:51158) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jlWlA-0003VH-3i for qemu-devel@nongnu.org; Wed, 17 Jun 2020 08:01:40 -0400 Received: from indium.canonical.com ([91.189.90.7]:45782) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1jlWl7-0006MA-Og for qemu-devel@nongnu.org; Wed, 17 Jun 2020 08:01:39 -0400 Received: from loganberry.canonical.com ([91.189.90.37]) by indium.canonical.com with esmtp (Exim 4.86_2 #2 (Debian)) id 1jlWl5-0002RS-0v for ; Wed, 17 Jun 2020 12:01:35 +0000 Received: from loganberry.canonical.com (localhost [127.0.0.1]) by loganberry.canonical.com (Postfix) with ESMTP id E60AE2E810C for ; Wed, 17 Jun 2020 12:01:34 +0000 (UTC) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Date: Wed, 17 Jun 2020 11:53:46 -0000 From: "Michael R. Crusoe" <1883784@bugs.launchpad.net> To: qemu-devel@nongnu.org X-Launchpad-Notification-Type: bug X-Launchpad-Bug: product=qemu; status=New; importance=Undecided; assignee=None; X-Launchpad-Bug-Tags: ppc64le tcg testcase X-Launchpad-Bug-Information-Type: Public X-Launchpad-Bug-Private: no X-Launchpad-Bug-Security-Vulnerability: no X-Launchpad-Bug-Commenters: laurent-vivier misterc nemequ X-Launchpad-Bug-Reporter: Evan Nemerson (nemequ) X-Launchpad-Bug-Modifier: Michael R. Crusoe (misterc) References: <159233926606.29237.7012634601262116409.malonedeb@chaenomeles.canonical.com> Message-Id: <159239482633.14583.18250980937636776635.malone@wampee.canonical.com> Subject: [Bug 1883784] Re: [ppc64le] qemu behavior differs from ppc64le hardware X-Launchpad-Message-Rationale: Subscriber (QEMU) @qemu-devel-ml X-Launchpad-Message-For: qemu-devel-ml Precedence: bulk X-Generated-By: Launchpad (canonical.com); Revision="1cbd0aa39df153c901321817f9b57cf3f232b507"; Instance="production-secrets-lazr.conf" X-Launchpad-Hash: 8761e5168b307296f626d2cb8ece26b2463c1ed4 Received-SPF: none client-ip=91.189.90.7; envelope-from=bounces@canonical.com; helo=indium.canonical.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/06/17 06:40:58 X-ACL-Warn: Detected OS = Linux 3.11 and newer [fuzzy] X-Spam_score_int: -58 X-Spam_score: -5.9 X-Spam_bar: ----- X-Spam_report: (-5.9 / 5.0 requ) BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=1, RCVD_IN_DNSWL_HI=-5, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_HELO_NONE=0.001, SPF_NONE=0.001 autolearn=_AUTOLEARN X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Bug 1883784 <1883784@bugs.launchpad.net> Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" I just ran the provided binaries on a qemu-system-ppc64 version 5.0-5 from Debian Bullseye and they also aborted there -- = You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1883784 Title: [ppc64le] qemu behavior differs from ppc64le hardware Status in QEMU: New Bug description: I have some code which passes my test suite on PPC64LE hardware when compiled with GCC 10, but the saem binary fails with both qemu-ppc64le 4.2 (on Fedora 32) and qemu-ppc64le-static 5.0.0 (Debian testing). I'm not getting any errors about illegal instructions or anything, like that; the results are just silently different on qemu. I've generated a reduced test case, which is attached along with the binaries (both are the same code, one is just statically linked). They should execute successufully on PPC64LE hardware, but on qemu they hit a __builtin_abort (because the computed value doesn't match the expected value). Without being familiar with PPC assembly I'm not sure what else I can do, but if there is anything please let me know. To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1883784/+subscriptions