From nobody Sun Feb 8 14:09:20 2026 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 1509615472436521.6002670416666; Thu, 2 Nov 2017 02:37:52 -0700 (PDT) Received: from localhost ([::1]:59368 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eABwd-00087S-7z for importer@patchew.org; Thu, 02 Nov 2017 05:37:51 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:57185) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eABvS-0007Nx-PR for qemu-devel@nongnu.org; Thu, 02 Nov 2017 05:36:39 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1eABvP-000490-M7 for qemu-devel@nongnu.org; Thu, 02 Nov 2017 05:36:38 -0400 Received: from mx1.redhat.com ([209.132.183.28]:33892) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1eABvP-00047K-FU for qemu-devel@nongnu.org; Thu, 02 Nov 2017 05:36:35 -0400 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 7B96580C1A; Thu, 2 Nov 2017 09:36:33 +0000 (UTC) Received: from localhost.localdomain (unknown [10.35.206.17]) by smtp.corp.redhat.com (Postfix) with ESMTPS id C23D15C54E; Thu, 2 Nov 2017 09:36:30 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com 7B96580C1A Authentication-Results: ext-mx02.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx02.extmail.prod.ext.phx2.redhat.com; spf=fail smtp.mailfrom=ppandit@redhat.com From: P J P To: Qemu Developers Date: Thu, 2 Nov 2017 15:06:25 +0530 Message-Id: <20171102093625.32342-1-ppandit@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.26]); Thu, 02 Nov 2017 09:36:33 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PATCH] pc: restrict port92 register value to 2 bits 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: Paolo Bonzini , Prasad J Pandit , Niu Guoxiang 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: Prasad J Pandit Port 92 configuration register holds an 8-bit value. Of 8-bits, bits 0-1 are used and 2-7 are reserved. Restrict the supplied value to 2 bits. Reported-by: Niu Guoxiang Signed-off-by: Prasad J Pandit --- hw/i386/pc.c | 1 + 1 file changed, 1 insertion(+) diff --git a/hw/i386/pc.c b/hw/i386/pc.c index 05985d4927..883384a599 100644 --- a/hw/i386/pc.c +++ b/hw/i386/pc.c @@ -515,6 +515,7 @@ static void port92_write(void *opaque, hwaddr addr, uin= t64_t val, Port92State *s =3D opaque; int oldval =3D s->outport; =20 + val &=3D 0x03; DPRINTF("port92: write 0x%02" PRIx64 "\n", val); s->outport =3D val; qemu_set_irq(s->a20_out, (val >> 1) & 1); --=20 2.13.6