From patchwork Mon Jul 24 16:53:35 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Huth X-Patchwork-Id: 1811928 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: legolas.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=MLs1OV5d; dkim-atps=neutral Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4R8mWM0XZ5z1yZw for ; Tue, 25 Jul 2023 02:55:43 +1000 (AEST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qNyp8-0001Ka-Nq; Mon, 24 Jul 2023 12:54:18 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qNyp6-0001Iu-F5 for qemu-devel@nongnu.org; Mon, 24 Jul 2023 12:54:16 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qNyor-0006tS-EJ for qemu-devel@nongnu.org; Mon, 24 Jul 2023 12:54:16 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1690217638; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=4qgi93289uepzkjshf/hYA5A3RmTT2kI+MG9i97Qsts=; b=MLs1OV5dZxbktif1+IqpspdZzmQERsb7iCTnWZcAWtqfc5c88wwTeFL9Cwv8+j9Vs/Ywy+ XI9H+5ybtsIR4PCO7LGb6GRzVmAqwrwBz6TGtXoXK07YnBuBZ3iCV792djDJ3onlK2uYm5 sGMMUFJXJQQNuA+qOmPv3RmLqConbV4= Received: from mimecast-mx02.redhat.com (66.187.233.73 [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-115-buBQl96JO5CvaSx-wTB2gQ-1; Mon, 24 Jul 2023 12:53:55 -0400 X-MC-Unique: buBQl96JO5CvaSx-wTB2gQ-1 Received: from smtp.corp.redhat.com (int-mx09.intmail.prod.int.rdu2.redhat.com [10.11.54.9]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 2B2663C13500; Mon, 24 Jul 2023 16:53:55 +0000 (UTC) Received: from thuth.com (unknown [10.39.192.60]) by smtp.corp.redhat.com (Postfix) with ESMTP id ED18948FB01; Mon, 24 Jul 2023 16:53:53 +0000 (UTC) From: Thomas Huth To: qemu-devel@nongnu.org Cc: Peter Maydell , Ilya Leoshkevich , qemu-stable@nongnu.org, David Hildenbrand , Richard Henderson Subject: [PULL 02/16] target/s390x: Fix CLM with M3=0 Date: Mon, 24 Jul 2023 18:53:35 +0200 Message-Id: <20230724165349.55714-3-thuth@redhat.com> In-Reply-To: <20230724165349.55714-1-thuth@redhat.com> References: <20230724165349.55714-1-thuth@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.9 Received-SPF: pass client-ip=170.10.129.124; envelope-from=thuth@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org From: Ilya Leoshkevich When the mask is zero, access exceptions should still be recognized for 1 byte at the second-operand address. CC should be set to 0. Cc: qemu-stable@nongnu.org Fixes: defb0e3157af ("s390x: Implement opcode helpers") Reviewed-by: David Hildenbrand Reviewed-by: Richard Henderson Signed-off-by: Ilya Leoshkevich Message-Id: <20230724082032.66864-3-iii@linux.ibm.com> Signed-off-by: Thomas Huth --- target/s390x/tcg/mem_helper.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/target/s390x/tcg/mem_helper.c b/target/s390x/tcg/mem_helper.c index f417fb1183..84103251b9 100644 --- a/target/s390x/tcg/mem_helper.c +++ b/target/s390x/tcg/mem_helper.c @@ -667,6 +667,11 @@ uint32_t HELPER(clm)(CPUS390XState *env, uint32_t r1, uint32_t mask, HELPER_LOG("%s: r1 0x%x mask 0x%x addr 0x%" PRIx64 "\n", __func__, r1, mask, addr); + if (!mask) { + /* Recognize access exceptions for the first byte */ + probe_read(env, addr, 1, cpu_mmu_index(env, false), ra); + } + while (mask) { if (mask & 8) { uint8_t d = cpu_ldub_data_ra(env, addr, ra);