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=-0.8 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 D099BC352A3 for ; Tue, 11 Feb 2020 13:11:50 +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 A782B20714 for ; Tue, 11 Feb 2020 13:11:50 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A782B20714 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:49364 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1j1VKP-00042w-SQ for qemu-devel@archiver.kernel.org; Tue, 11 Feb 2020 08:11:49 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:34881) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1j1VJW-0003Y9-Mv for qemu-devel@nongnu.org; Tue, 11 Feb 2020 08:10:55 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1j1VJV-0008H0-Kf for qemu-devel@nongnu.org; Tue, 11 Feb 2020 08:10:54 -0500 Received: from indium.canonical.com ([91.189.90.7]:59124) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1j1VJV-0008Ey-FN for qemu-devel@nongnu.org; Tue, 11 Feb 2020 08:10:53 -0500 Received: from loganberry.canonical.com ([91.189.90.37]) by indium.canonical.com with esmtp (Exim 4.86_2 #2 (Debian)) id 1j1VJT-0000VS-N4 for ; Tue, 11 Feb 2020 13:10:51 +0000 Received: from loganberry.canonical.com (localhost [127.0.0.1]) by loganberry.canonical.com (Postfix) with ESMTP id AD8F12E80C0 for ; Tue, 11 Feb 2020 13:10:51 +0000 (UTC) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Date: Tue, 11 Feb 2020 13:03:00 -0000 From: =?utf-8?q?Alex_Benn=C3=A9e?= To: qemu-devel@nongnu.org X-Launchpad-Notification-Type: bug X-Launchpad-Bug: product=qemu; status=Invalid; importance=Undecided; assignee=None; X-Launchpad-Bug-Tags: arm X-Launchpad-Bug-Information-Type: Public X-Launchpad-Bug-Private: no X-Launchpad-Bug-Security-Vulnerability: no X-Launchpad-Bug-Commenters: kawakami-k laurent-vivier pmaydell X-Launchpad-Bug-Reporter: Kentaro Kawakami (kawakami-k) X-Launchpad-Bug-Modifier: =?utf-8?q?Alex_Benn=C3=A9e_=28ajbennee=29?= References: <158099412478.8645.15882160651412694280.malonedeb@chaenomeles.canonical.com> Message-Id: <158142618081.24950.18175153360446949434.launchpad@soybean.canonical.com> Subject: [Bug 1862167] Re: Variation of SVE register size (qemu-user-aarch64) 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="19413b719a8df7423ab1390528edadce9e0e4aca"; Instance="production-secrets-lazr.conf" X-Launchpad-Hash: 12c09aca935bee0cdd279b1501e7356354249054 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 91.189.90.7 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 1862167 <1862167@bugs.launchpad.net> Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" ** Tags added: arm ** Changed in: qemu Status: New =3D> Invalid -- = You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1862167 Title: Variation of SVE register size (qemu-user-aarch64) Status in QEMU: Invalid Bug description: Specification of ARMv8-A SVE extention allows various values =E2=80=8B=E2= =80=8Bfor the size of the SVE register. On the other hand, it seems that the current qemu-aarch64 supports only the maximum length of 2048 bits as the SVE register size. I am writing an assembler program for a CPU that is compliant with ARMv8-A + SVE and has a 512-bit SVE register, but when this is run with qemu-user-aarch64, a 2048-bit load / store instruction is executed This causes a segmentation fault. Shouldn't qeum-user-aarch64 have an option to specify the SVE register size? To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1862167/+subscriptions