From nobody Tue Nov 4 15:40:40 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; 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 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1503966677791300.2382025418001; Mon, 28 Aug 2017 17:31:17 -0700 (PDT) Received: from localhost ([::1]:41968 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dmUR1-0006g2-Mt for importer@patchew.org; Mon, 28 Aug 2017 20:31:15 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:47694) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dmUCH-00010u-5x for qemu-devel@nongnu.org; Mon, 28 Aug 2017 20:16:02 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dmUCD-0005Em-RT for qemu-devel@nongnu.org; Mon, 28 Aug 2017 20:16:01 -0400 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:52700 helo=mx0a-001b2d01.pphosted.com) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1dmUCD-0005E4-JT for qemu-devel@nongnu.org; Mon, 28 Aug 2017 20:15:57 -0400 Received: from pps.filterd (m0098421.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.21/8.16.0.21) with SMTP id v7T0EBkT081939 for ; Mon, 28 Aug 2017 20:15:57 -0400 Received: from e36.co.us.ibm.com (e36.co.us.ibm.com [32.97.110.154]) by mx0a-001b2d01.pphosted.com with ESMTP id 2cmurncras-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Mon, 28 Aug 2017 20:15:56 -0400 Received: from localhost by e36.co.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; Mon, 28 Aug 2017 18:15:55 -0600 Received: from b03ledav003.gho.boulder.ibm.com (b03ledav003.gho.boulder.ibm.com [9.17.130.234]) by b03cxnp08027.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id v7T0FsM163504516; Mon, 28 Aug 2017 17:15:54 -0700 Received: from b03ledav003.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 8D66E6A047; Mon, 28 Aug 2017 18:15:54 -0600 (MDT) Received: from localhost (unknown [9.80.85.217]) by b03ledav003.gho.boulder.ibm.com (Postfix) with ESMTP id 5A2916A03D; Mon, 28 Aug 2017 18:15:54 -0600 (MDT) From: Michael Roth To: qemu-devel@nongnu.org Date: Mon, 28 Aug 2017 19:14:01 -0500 X-Mailer: git-send-email 2.7.4 In-Reply-To: <1503965694-10794-1-git-send-email-mdroth@linux.vnet.ibm.com> References: <1503965694-10794-1-git-send-email-mdroth@linux.vnet.ibm.com> X-TM-AS-GCONF: 00 x-cbid: 17082900-0020-0000-0000-00000CA0E9BE X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00007630; HX=3.00000241; KW=3.00000007; PH=3.00000004; SC=3.00000226; SDB=6.00909028; UDB=6.00455849; IPR=6.00689279; BA=6.00005557; NDR=6.00000001; ZLA=6.00000005; ZF=6.00000009; ZB=6.00000000; ZP=6.00000000; ZH=6.00000000; ZU=6.00000002; MB=3.00016909; XFM=3.00000015; UTC=2017-08-29 00:15:56 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 17082900-0021-0000-0000-00005DE89191 Message-Id: <1503965694-10794-27-git-send-email-mdroth@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2017-08-28_13:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=1 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1707230000 definitions=main-1708290001 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [generic] [fuzzy] X-Received-From: 148.163.158.5 Subject: [Qemu-devel] [PATCH 26/79] target/xtensa: fix mapping direction in read/write simcalls 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: Max Filippov , qemu-stable@nongnu.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" From: Max Filippov Read and write simcalls map physical memory to access I/O buffers, but 'read' simcall need to map it for writing and 'write' simcall need to map it for reading, i.e. the opposite of what they do now. Fix that. Cc: qemu-stable@nongnu.org Signed-off-by: Max Filippov (cherry picked from commit 30c2afd151cbc38c012f7b441088980807183da6) Signed-off-by: Michael Roth --- target/xtensa/xtensa-semi.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/target/xtensa/xtensa-semi.c b/target/xtensa/xtensa-semi.c index a888a9d..98ae28c 100644 --- a/target/xtensa/xtensa-semi.c +++ b/target/xtensa/xtensa-semi.c @@ -173,7 +173,7 @@ void HELPER(simcall)(CPUXtensaState *env) TARGET_PAGE_SIZE - (vaddr & (TARGET_PAGE_SIZE - 1)); uint32_t io_sz =3D page_left < len ? page_left : len; hwaddr sz =3D io_sz; - void *buf =3D cpu_physical_memory_map(paddr, &sz, is_write= ); + void *buf =3D cpu_physical_memory_map(paddr, &sz, !is_writ= e); =20 if (buf) { vaddr +=3D io_sz; @@ -182,7 +182,7 @@ void HELPER(simcall)(CPUXtensaState *env) write(fd, buf, io_sz) : read(fd, buf, io_sz); regs[3] =3D errno_h2g(errno); - cpu_physical_memory_unmap(buf, sz, is_write, sz); + cpu_physical_memory_unmap(buf, sz, !is_write, sz); if (regs[2] =3D=3D -1) { break; } --=20 2.7.4