From nobody Tue Feb 10 06:57:51 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 149941369663567.00730657921861; Fri, 7 Jul 2017 00:48:16 -0700 (PDT) Received: from localhost ([::1]:55023 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dTNzq-0002jm-H1 for importer@patchew.org; Fri, 07 Jul 2017 03:48:14 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:33438) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dTNw3-0000MV-7O for qemu-devel@nongnu.org; Fri, 07 Jul 2017 03:44:20 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dTNw2-0008VV-Du for qemu-devel@nongnu.org; Fri, 07 Jul 2017 03:44:19 -0400 Received: from chuckie.co.uk ([82.165.15.123]:54688 helo=s16892447.onlinehome-server.info) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1dTNw2-0008Sm-6d for qemu-devel@nongnu.org; Fri, 07 Jul 2017 03:44:18 -0400 Received: from host86-191-132-89.range86-191.btcentralplus.com ([86.191.132.89] helo=kentang.home) by s16892447.onlinehome-server.info with esmtpsa (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.76) (envelope-from ) id 1dTNvy-0006ah-J0; Fri, 07 Jul 2017 08:44:15 +0100 From: Mark Cave-Ayland To: qemu-devel@nongnu.org, mst@redhat.com, armbru@redhat.com, marcel@redhat.com Date: Fri, 7 Jul 2017 08:44:02 +0100 Message-Id: <1499413442-5053-4-git-send-email-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1499413442-5053-1-git-send-email-mark.cave-ayland@ilande.co.uk> References: <1499413442-5053-1-git-send-email-mark.cave-ayland@ilande.co.uk> X-SA-Exim-Connect-IP: 86.191.132.89 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk X-SA-Exim-Version: 4.2.1 (built Sun, 08 Jan 2012 02:45:44 +0000) X-SA-Exim-Scanned: Yes (on s16892447.onlinehome-server.info) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [fuzzy] X-Received-From: 82.165.15.123 Subject: [Qemu-devel] [PATCH 3/3] pci: add reserved slot check to do_pci_register_device() 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: , 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" Signed-off-by: Mark Cave-Ayland --- hw/pci/pci.c | 21 ++++++++++++++++++--- 1 file changed, 18 insertions(+), 3 deletions(-) diff --git a/hw/pci/pci.c b/hw/pci/pci.c index 239161e..9dece2a 100644 --- a/hw/pci/pci.c +++ b/hw/pci/pci.c @@ -961,6 +961,15 @@ static bool pci_bus_devfn_available(PCIBus *bus, int d= evfn) } } =20 +static bool pci_bus_devfn_reserved(PCIBus *bus, int devfn) +{ + if (bus->dev_reserved_mask & (1UL << PCI_SLOT(devfn))) { + return true; + } else { + return false; + } +} + /* -1 for devfn means auto assign */ static PCIDevice *do_pci_register_device(PCIDevice *pci_dev, PCIBus *bus, const char *name, int devfn, @@ -984,14 +993,20 @@ static PCIDevice *do_pci_register_device(PCIDevice *p= ci_dev, PCIBus *bus, if (devfn < 0) { for(devfn =3D bus->devfn_min ; devfn < ARRAY_SIZE(bus->devices); devfn +=3D PCI_FUNC_MAX) { - if (pci_bus_devfn_available(bus, devfn)) { + if (pci_bus_devfn_available(bus, devfn) && + !pci_bus_devfn_reserved(bus, devfn)) { goto found; } } - error_setg(errp, "PCI: no slot/function available for %s, all in u= se", - name); + error_setg(errp, "PCI: no slot/function available for %s, all in u= se " + "or reserved", name); return NULL; found: ; + } else if (pci_bus_devfn_reserved(bus, devfn)) { + error_setg(errp, "PCI: slot %d function %d not available for %s," + " reserved", + PCI_SLOT(devfn), PCI_FUNC(devfn), name); + return NULL; } else if (!pci_bus_devfn_available(bus, devfn)) { error_setg(errp, "PCI: slot %d function %d not available for %s," " in use by %s", --=20 1.7.10.4