From nobody Mon Feb 9 22:38:39 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.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=gmx.de ARC-Seal: i=1; a=rsa-sha256; t=1662658647; cv=none; d=zohomail.com; s=zohoarc; b=QwdybCVNSzKohXkd1QPHBoLN0q0U0nDEYLfamx2DcaBm67PJOoraNcMPAyHZyLPpQceLuCOspZt8ebW1onjsrZAj8fGN8bViwP0aLfe+C4ElvnBgjX3IJMTs07irYUAReOkXFWUyB/HnVcQb7UF9ewwbZ+WUaJj7fbTPauU/Bh0= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1662658647; 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; bh=olegijg/zzmn/qwcpcwSdoRjn/mieoR+9bXcKiUMyYg=; b=iCl9b65lReqS0Gq8ic+7Sg7unaKH1Ur/ojzWHiXWiMZ0hCohyymrAoPOp0PjdC5hF7rEQSGtdo94TYW1pWAR8JmDoM8TYUomY0+mjJdebhZiHnp/anX3+FHusnzMRYV+JVXp3hTUaZrhjh9WJTFnLNVZFFNnNQYzm94LkykCdME= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.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) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1662658647162667.9665656467731; Thu, 8 Sep 2022 10:37:27 -0700 (PDT) Received: from localhost ([::1]:46384 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oWLSv-00025A-Td for importer@patchew.org; Thu, 08 Sep 2022 13:37:25 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:49658) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oWLNc-0003yE-Mg; Thu, 08 Sep 2022 13:31:57 -0400 Received: from mout.gmx.net ([212.227.15.18]:39757) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oWLNP-0002BK-5n; Thu, 08 Sep 2022 13:31:45 -0400 Received: from btm-mobil4.fritz.box ([178.8.103.19]) by mail.gmx.net (mrgmx005 [212.227.17.190]) with ESMTPSA (Nemesis) id 1MCsU6-1of6nh09b6-008uOW; Thu, 08 Sep 2022 19:31:37 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net; s=badeba3b8450; t=1662658297; bh=6tNsnvyALQCekAEnGgE4v3vfbs9lSzguI1+wfNRfGJU=; h=X-UI-Sender-Class:From:To:Cc:Subject:Date:In-Reply-To:References; b=H+oSUyP7e6lRS4hcaJAO3X85kguth4HnGR0xdUyiH2jqyfTiIElthRUayKmQyDbcV Pt6YNvZOVE/WWE8wgKncD6HZ3D3Iv+KDlCmzuohDJaPRmldXWzzUwgQmpUar899o9D RaIdRq8jSwBA1YYrmw7D7IL+emlYUuRis1BQuDd4= X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c From: Arwed Meyer To: qemu-devel@nongnu.org Cc: qemu-stable@nongnu.org, Arwed Meyer , "Michael S. Tsirkin" , Paolo Bonzini , =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= Subject: [PATCH v2 5/5] serial: Allow unaligned i/o access Date: Thu, 8 Sep 2022 19:31:20 +0200 Message-Id: <20220908173120.16779-6-arwed.meyer@gmx.de> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220908173120.16779-1-arwed.meyer@gmx.de> References: <20220908173120.16779-1-arwed.meyer@gmx.de> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Provags-ID: V03:K1:C+DfGC9Mx9hS4qYSHt+P9guSTmGOFbC3ivCXrl1UAyPVFCtziWk +dDxlNZ8WIHQXXmycn8GeK9pbHb6veXBD2kePZj9SSnwY/yOUwlGNf70w+shDpwDVDxdmZo BQAWNwI1cie0Pc2sN3wI1470TvE5qWjD6IfAkd/29I8kXtZ9asHem5Wj2OcdmeKDprxo+U5 KytYJeLrUh11VRva7NdTQ== X-UI-Out-Filterresults: notjunk:1;V03:K0:6WXX/W6a0bc=:kXY/MxuZQ0r+VhOvk5xNey GXPPsSytGLUcH7hcrcxT61cT+wNmfyO5Vm9wC9gQwZRPOzjQUJ23cjx0e7RH5tOTTe/hGf+7k 6aIXgxIwQzeCyaxoIJaEyXmspO7O5DU7MQA4cnRATmeUScm3ItrldWUcnutfRPHIx/YM6pMOT 8mUVwvQjUUtn42yZnTw9NATJje0242M537FJbjHrtysAikE73w3OBk1lL29iS6Sb6RHz3GDx5 /0mMb9SrHb53a0xZ67DPu5GcS2E9TnzKzK92ON66bz2b3cWodQLLy4NNhJJ2Lkii5dJx0LdLa 2TT8ryscP/XmYfdMAoi02Q6YmcgzVK6l5N7+DmU9lkte3RG/uOn+Pnc7vCed12U9AL/APEu8S +LeKqN8B3YneuszPBnur0sOGpMQdWoQ6IsAlA8uXxBKY6ExDdbshjkE3QOxy1uxy4oe2WaXwQ W8l/x2OvEJSfxSX5lR6a3qpkdVn6I1OE77arQRgKItR1QZOoAATGEpvhWZbIyacL607f5pCJ1 U6ICHZ62j6I7Fad/KSVMEATGZEFN5AJYytTwdh92V9gNWgR6dZnS8EN9jo8+yySEMOYyCBJVb iZyPS1tywk+F+M2q1Nes0DzEymTB8hfsqN/SZ5l+vNVV93l5p93YMZ4IKtW+vBKtz+aVzFvTD jcnZjPks0Zdgf0YVaC7Ae6zlrX5AfaOAezqY87m3jlITtlMdewdnIOi+9DASu7AJeVmB2DSHI GZFhl0/V4IAVzdVgk3tisRwZEuJwJV2ph5S1zAflH3n1e/phNSXzLmuZc62v6X7YlICZw+3oK rduIrNCBeqzZd01YvuK9+lt4QYMMRi4kPE4ftB0PMsSb9JsTFTdyjpPMitkgKfO9ep9XfwdCe 0vIOe7nyiVtIwoS/7Ls7BGFOFxuF7UK704xrVLPV4ALqjI6B3J6+aPfoFt/+aFiq76zL4xIpR 6JK81HWxyL59g1oVKm5b1V79mfy69sPAS2Emt20fWfKHSiL0yFj+FZ4RmkWjJAJuYFRHPEBAq DpEu6irNJDUpZi8OOR+CIK6JlhdiQDIju2JmFfrwzDTSDbb2Yc02sSaoz7MDNxNcB1yVf5kX2 7aMvdGAVXfKnNoCW8qt+OkvJDFnGdQ01byaeaEvzNWtzvunA6ULgv4I+vLECUSfkCOQEDHcjH KONCDt+s9Q6vWMQXcVax7Ca/jh Received-SPF: pass (zohomail.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; Received-SPF: pass client-ip=212.227.15.18; envelope-from=arwed.meyer@gmx.de; helo=mout.gmx.net X-Spam_score_int: -25 X-Spam_score: -2.6 X-Spam_bar: -- X-Spam_report: (-2.6 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham 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+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @gmx.net) X-ZM-MESSAGEID: 1662658649124100002 Content-Type: text/plain; charset="utf-8" Unaligned i/o access on serial UART works on real PCs. This is used for example by FreeDOS CTMouse driver. Without this it can't reset and detect serial mice. Resolves: https://gitlab.com/qemu-project/qemu/-/issues/77 Signed-off-by: Arwed Meyer --- hw/char/serial.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/hw/char/serial.c b/hw/char/serial.c index 7061aacbce..41b5e61977 100644 --- a/hw/char/serial.c +++ b/hw/char/serial.c @@ -961,6 +961,9 @@ void serial_set_frequency(SerialState *s, uint32_t freq= uency) const MemoryRegionOps serial_io_ops =3D { .read =3D serial_ioport_read, .write =3D serial_ioport_write, + .valid =3D { + .unaligned =3D 1, + }, .impl =3D { .min_access_size =3D 1, .max_access_size =3D 1, -- 2.34.1