From nobody Tue Feb 10 21:19:23 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 15080386144471013.7337020433145; Sat, 14 Oct 2017 20:36:54 -0700 (PDT) Received: from localhost ([::1]:56008 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1e3ZjP-0004jw-Ka for importer@patchew.org; Sat, 14 Oct 2017 23:36:51 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:49301) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1e3ZX0-000322-2U for qemu-devel@nongnu.org; Sat, 14 Oct 2017 23:24:03 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1e3ZWx-0007AH-RQ for qemu-devel@nongnu.org; Sat, 14 Oct 2017 23:24:02 -0400 Received: from mx1.redhat.com ([209.132.183.28]:48858) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1e3ZWx-000797-LS for qemu-devel@nongnu.org; Sat, 14 Oct 2017 23:23:59 -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 BB88D80F6C; Sun, 15 Oct 2017 03:23:58 +0000 (UTC) Received: from redhat.com (ovpn-120-178.rdu2.redhat.com [10.10.120.178]) by smtp.corp.redhat.com (Postfix) with SMTP id 4F87E6929E; Sun, 15 Oct 2017 03:23:58 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com BB88D80F6C Authentication-Results: ext-mx03.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx03.extmail.prod.ext.phx2.redhat.com; spf=fail smtp.mailfrom=mst@redhat.com Date: Sun, 15 Oct 2017 06:23:57 +0300 From: "Michael S. Tsirkin" To: qemu-devel@nongnu.org Message-ID: <1508036858-13479-22-git-send-email-mst@redhat.com> References: <1508036858-13479-1-git-send-email-mst@redhat.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <1508036858-13479-1-git-send-email-mst@redhat.com> X-Mutt-Fcc: =sent 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 [10.5.110.27]); Sun, 15 Oct 2017 03:23:58 +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] [PULL 21/26] hw/gen_pcie_root_port: make IO RO 0 on IO disabled 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: Marcel Apfelbaum , Peter Maydell 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 Content-Type: text/plain; charset="utf-8" From: Marcel Apfelbaum IO_LIMIT and IO_BASE registers should not be writable if gen_pcie_root_port's io-reserve property is set to 0. The COMMAND register should have the IO flag read only. Signed-off-by: Marcel Apfelbaum Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin --- hw/pci-bridge/gen_pcie_root_port.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/hw/pci-bridge/gen_pcie_root_port.c b/hw/pci-bridge/gen_pcie_ro= ot_port.c index ed03ffc..ad4e6aa 100644 --- a/hw/pci-bridge/gen_pcie_root_port.c +++ b/hw/pci-bridge/gen_pcie_root_port.c @@ -85,6 +85,13 @@ static void gen_rp_realize(DeviceState *dev, Error **err= p) rpc->parent_class.exit(d); return; } + + if (!grp->io_reserve) { + pci_word_test_and_clear_mask(d->wmask + PCI_COMMAND, + PCI_COMMAND_IO); + d->wmask[PCI_IO_BASE] =3D 0; + d->wmask[PCI_IO_LIMIT] =3D 0; + } } =20 static const VMStateDescription vmstate_rp_dev =3D { --=20 MST