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=-3.8 required=3.0 tests=BAYES_00, 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 0D8E3C07E9B for ; Tue, 6 Jul 2021 04:35:52 +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 C62DB6193E for ; Tue, 6 Jul 2021 04:35:51 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C62DB6193E 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]:42984 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1m0coI-0007PZ-Gh for qemu-devel@archiver.kernel.org; Tue, 06 Jul 2021 00:35:50 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:46376) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1m0cfJ-0008HT-Sa for qemu-devel@nongnu.org; Tue, 06 Jul 2021 00:26:34 -0400 Received: from indium.canonical.com ([91.189.90.7]:51298) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1m0cfI-0003Bg-BG for qemu-devel@nongnu.org; Tue, 06 Jul 2021 00:26:33 -0400 Received: from loganberry.canonical.com ([91.189.90.37]) by indium.canonical.com with esmtp (Exim 4.93 #5 (Debian)) id 1m0cf4-0004xX-Hi for ; Tue, 06 Jul 2021 04:26:18 +0000 Received: from loganberry.canonical.com (localhost [127.0.0.1]) by loganberry.canonical.com (Postfix) with ESMTP id 709F22E833D for ; Tue, 6 Jul 2021 04:26:03 +0000 (UTC) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Date: Tue, 06 Jul 2021 04:17:52 -0000 From: Launchpad Bug Tracker <1883784@bugs.launchpad.net> To: qemu-devel@nongnu.org X-Launchpad-Notification-Type: bug X-Launchpad-Bug: product=qemu; status=Expired; 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: janitor laurent-vivier misterc nemequ th-huth X-Launchpad-Bug-Reporter: Evan Nemerson (nemequ) X-Launchpad-Bug-Modifier: Launchpad Janitor (janitor) References: <159233926606.29237.7012634601262116409.malonedeb@chaenomeles.canonical.com> Message-Id: <162554507264.7821.14615649870529168092.malone@loganberry.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="fe01712f453e3d8fdd7cfee725621d71a8ae3628"; Instance="production" X-Launchpad-Hash: 278dc0a12a9a8e79be9c510848b6ead0b8197e8c Received-SPF: none client-ip=91.189.90.7; envelope-from=bounces@canonical.com; helo=indium.canonical.com X-Spam_score_int: -65 X-Spam_score: -6.6 X-Spam_bar: ------ X-Spam_report: (-6.6 / 5.0 requ) BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.249, RCVD_IN_DNSWL_HI=-5, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_NONE=0.001 autolearn=ham autolearn_force=no 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" [Expired for QEMU because there has been no activity for 60 days.] ** Changed in: qemu Status: Incomplete =3D> Expired -- = 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: Expired 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