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=-1.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham 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 6AB69C28CC2 for ; Fri, 31 May 2019 14:58:05 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 46D7F25173 for ; Fri, 31 May 2019 14:58:05 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 46D7F25173 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([127.0.0.1]:44873 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hWiyq-0003rH-Cb for qemu-devel@archiver.kernel.org; Fri, 31 May 2019 10:58:04 -0400 Received: from eggs.gnu.org ([209.51.188.92]:50843) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hWixK-0002h4-OT for qemu-devel@nongnu.org; Fri, 31 May 2019 10:56:32 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hWixJ-0004Xs-QJ for qemu-devel@nongnu.org; Fri, 31 May 2019 10:56:30 -0400 Received: from mx1.redhat.com ([209.132.183.28]:50666) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1hWixH-0004R5-Oa; Fri, 31 May 2019 10:56:28 -0400 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 9A1E3A3B7C; Fri, 31 May 2019 14:56:14 +0000 (UTC) Received: from t460s.redhat.com (ovpn-116-233.ams2.redhat.com [10.36.116.233]) by smtp.corp.redhat.com (Postfix) with ESMTP id 1D4D717480; Fri, 31 May 2019 14:56:09 +0000 (UTC) From: David Hildenbrand To: qemu-devel@nongnu.org Date: Fri, 31 May 2019 16:56:06 +0200 Message-Id: <20190531145608.28183-1-david@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.30]); Fri, 31 May 2019 14:56:19 +0000 (UTC) Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PATCH v1 0/2] s390x/tcg: STFLE fixes X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: qemu-s390x@nongnu.org, Cornelia Huck , David Hildenbrand , Thomas Huth , Richard Henderson Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" While testing vector instructions, I ran into various issues with user space binaries compiled with more recent compiler versions like # gunzip /usr/share/man/man1/hexdump.1.gz *** stack smashing detected ***: terminated Turns out: a) the STFLE instruction in semi-broken on the first invocation b) the code expects a different STFLE behavior than documented in the PoP Fix a) and make sure the code works by adjusting b). David Hildenbrand (2): s390x/tcg: Fix max_byte detection for stfle s390x/tcg: Store only the necessary amount of doublewords for STFLE target/s390x/misc_helper.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) --=20 2.20.1