From nobody Sun Feb 8 22:58:08 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1568899533; cv=none; d=zoho.com; s=zohoarc; b=KPcu8LlqgSiBJprNdvHycr2mwB6VY8icrAiXBbcNUa/gllTW49iSCb2Kv2QrjIYqLgAE/f0dzUQEv4iIfonx2B48YMhrvuNf+LgWQaqoEwqBEPCxeOSAyz0DJrzOl7aUZVJFK6xy0hh2ryGQt/bGk+l0JPA9uNQzPZ4vlasxnWM= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zoho.com; s=zohoarc; t=1568899533; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To:ARC-Authentication-Results; bh=e1VAxZ9aNKQRuTpRbS13aYwVth0IElDvC+aUI5rjmYU=; b=jvlnp5sHzYjVONgNr/fLgC+bpbNsftA+hkoArHGeBSf5yW2XHdYSjPqop/U9OW9cFyMgJoFCDnkWcSNVeOJ4HNdI05NmkmNrENJ54qVJyPEMPacohXN2UmBmy6aoPnI7uI5aV7BMxxNgPloaVJ62TeiyS9ahIK2qHw6cRAg8frw= ARC-Authentication-Results: i=1; mx.zoho.com; spf=pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1568899533588928.5797505356513; Thu, 19 Sep 2019 06:25:33 -0700 (PDT) Received: from localhost ([::1]:43932 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iAwR7-0001WU-Gc for importer@patchew.org; Thu, 19 Sep 2019 09:25:29 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:41468) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iAvsf-0006KH-OR for qemu-devel@nongnu.org; Thu, 19 Sep 2019 08:49:55 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iAvko-0008IY-M1 for qemu-devel@nongnu.org; Thu, 19 Sep 2019 08:41:47 -0400 Received: from mx1.redhat.com ([209.132.183.28]:42714) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1iAvko-0008HN-H1; Thu, 19 Sep 2019 08:41:46 -0400 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id C449B300BCE9; Thu, 19 Sep 2019 12:41:45 +0000 (UTC) Received: from localhost (dhcp-192-230.str.redhat.com [10.33.192.230]) by smtp.corp.redhat.com (Postfix) with ESMTPS id D1EC31001938; Thu, 19 Sep 2019 12:41:42 +0000 (UTC) From: Cornelia Huck To: Peter Maydell Date: Thu, 19 Sep 2019 14:40:47 +0200 Message-Id: <20190919124115.11510-7-cohuck@redhat.com> In-Reply-To: <20190919124115.11510-1-cohuck@redhat.com> References: <20190919124115.11510-1-cohuck@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.46]); Thu, 19 Sep 2019 12:41:45 +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] [PULL 06/34] s390x/tcg: MVC: Use is_destructive_overlap() X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: qemu-s390x@nongnu.org, Richard Henderson , qemu-devel@nongnu.org, David Hildenbrand Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Type: text/plain; charset="utf-8" From: David Hildenbrand Let's use the new helper, that also detects destructive overlaps when wrapping. We'll make the remaining code (e.g., fast_memmove()) aware of wrapping later. Reviewed-by: Richard Henderson Signed-off-by: David Hildenbrand --- target/s390x/mem_helper.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/target/s390x/mem_helper.c b/target/s390x/mem_helper.c index 013e8d6045e7..c31cf4959358 100644 --- a/target/s390x/mem_helper.c +++ b/target/s390x/mem_helper.c @@ -330,7 +330,7 @@ static uint32_t do_helper_mvc(CPUS390XState *env, uint3= 2_t l, uint64_t dest, */ if (dest =3D=3D src + 1) { fast_memset(env, dest, cpu_ldub_data_ra(env, src, ra), l, ra); - } else if (dest < src || src + l <=3D dest) { + } else if (!is_destructive_overlap(env, dest, src, l)) { fast_memmove(env, dest, src, l, ra); } else { for (i =3D 0; i < l; i++) { --=20 2.20.1