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[libvirt] [PATCH 07/10] Move QEMU hostdev helper code out of the QEMU driver



The QEMU driver file is far too large. Move all the hostdev
helper code out into a separate file. No functional change.

* src/qemu/qemu_hostdev.c, src/qemu/qemu_hostdev.h,
  src/Makefile.am: Add hostdev helper file
* src/qemu/qemu_driver.c: Delete hostdev code
---
 src/Makefile.am         |    1 +
 src/qemu/qemu_driver.c  |  266 +-------------------------------------------
 src/qemu/qemu_hostdev.c |  289 +++++++++++++++++++++++++++++++++++++++++++++++
 src/qemu/qemu_hostdev.h |   45 ++++++++
 4 files changed, 337 insertions(+), 264 deletions(-)
 create mode 100644 src/qemu/qemu_hostdev.c
 create mode 100644 src/qemu/qemu_hostdev.h

diff --git a/src/Makefile.am b/src/Makefile.am
index da3bd6f..d30774b 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -272,6 +272,7 @@ QEMU_DRIVER_SOURCES =						\
 		qemu/qemu_domain.c qemu/qemu_domain.h		\
 		qemu/qemu_audit.c qemu/qemu_audit.h		\
 		qemu/qemu_cgroup.c qemu/qemu_cgroup.c		\
+		qemu/qemu_hostdev.c qemu/qemu_hostdev.h		\
 		qemu/qemu_conf.c qemu/qemu_conf.h		\
 		qemu/qemu_monitor.c qemu/qemu_monitor.h		\
 		qemu/qemu_monitor_text.c			\
diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index 585b259..5d8aef3 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -56,6 +56,7 @@
 #include "qemu_capabilities.h"
 #include "qemu_command.h"
 #include "qemu_cgroup.h"
+#include "qemu_hostdev.h"
 #include "qemu_monitor.h"
 #include "qemu_bridge_filter.h"
 #include "qemu_audit.h"
@@ -144,9 +145,6 @@ static int qemudDomainGetMaxVcpus(virDomainPtr dom);
 static int qemuDetectVcpuPIDs(struct qemud_driver *driver,
                               virDomainObjPtr vm);
 
-static int qemuUpdateActivePciHostdevs(struct qemud_driver *driver,
-                                       virDomainDefPtr def);
-
 static int qemudVMFiltersInstantiate(virConnectPtr conn,
                                      virDomainDefPtr def);
 
@@ -2758,192 +2756,6 @@ cleanup:
 }
 
 
-static pciDeviceList *
-qemuGetPciHostDeviceList(virDomainHostdevDefPtr *hostdevs, int nhostdevs)
-{
-    pciDeviceList *list;
-    int i;
-
-    if (!(list = pciDeviceListNew()))
-        return NULL;
-
-    for (i = 0 ; i < nhostdevs ; i++) {
-        virDomainHostdevDefPtr hostdev = hostdevs[i];
-        pciDevice *dev;
-
-        if (hostdev->mode != VIR_DOMAIN_HOSTDEV_MODE_SUBSYS)
-            continue;
-        if (hostdev->source.subsys.type != VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_PCI)
-            continue;
-
-        dev = pciGetDevice(hostdev->source.subsys.u.pci.domain,
-                           hostdev->source.subsys.u.pci.bus,
-                           hostdev->source.subsys.u.pci.slot,
-                           hostdev->source.subsys.u.pci.function);
-        if (!dev) {
-            pciDeviceListFree(list);
-            return NULL;
-        }
-
-        if (pciDeviceListAdd(list, dev) < 0) {
-            pciFreeDevice(dev);
-            pciDeviceListFree(list);
-            return NULL;
-        }
-
-        pciDeviceSetManaged(dev, hostdev->managed);
-    }
-
-    return list;
-}
-
-static int
-qemuUpdateActivePciHostdevs(struct qemud_driver *driver,
-                            virDomainDefPtr def)
-{
-    pciDeviceList *pcidevs;
-    int i;
-    int ret = -1;
-
-    if (!def->nhostdevs)
-        return 0;
-
-    if (!(pcidevs = qemuGetPciHostDeviceList(def->hostdevs, def->nhostdevs)))
-        return -1;
-
-    for (i = 0; i < pciDeviceListCount(pcidevs); i++) {
-        pciDevice *dev = pciDeviceListGet(pcidevs, i);
-        pciDeviceListSteal(pcidevs, dev);
-        if (pciDeviceListAdd(driver->activePciHostdevs, dev) < 0) {
-            pciFreeDevice(dev);
-            goto cleanup;
-        }
-    }
-
-    ret = 0;
-
-cleanup:
-    pciDeviceListFree(pcidevs);
-    return ret;
-}
-
-
-static int
-qemuPrepareHostdevPCIDevices(struct qemud_driver *driver,
-                             virDomainHostdevDefPtr *hostdevs,
-                             int nhostdevs)
-{
-    pciDeviceList *pcidevs;
-    int i;
-    int ret = -1;
-
-    if (!(pcidevs = qemuGetPciHostDeviceList(hostdevs, nhostdevs)))
-        return -1;
-
-    /* We have to use 3 loops here. *All* devices must
-     * be detached before we reset any of them, because
-     * in some cases you have to reset the whole PCI,
-     * which impacts all devices on it. Also, all devices
-     * must be reset before being marked as active.
-     */
-
-    /* XXX validate that non-managed device isn't in use, eg
-     * by checking that device is either un-bound, or bound
-     * to pci-stub.ko
-     */
-
-    for (i = 0; i < pciDeviceListCount(pcidevs); i++) {
-        pciDevice *dev = pciDeviceListGet(pcidevs, i);
-        if (!pciDeviceIsAssignable(dev, !driver->relaxedACS))
-            goto cleanup;
-
-        if (pciDeviceGetManaged(dev) &&
-            pciDettachDevice(dev, driver->activePciHostdevs) < 0)
-            goto cleanup;
-    }
-
-    /* Now that all the PCI hostdevs have be dettached, we can safely
-     * reset them */
-    for (i = 0; i < pciDeviceListCount(pcidevs); i++) {
-        pciDevice *dev = pciDeviceListGet(pcidevs, i);
-        if (pciResetDevice(dev, driver->activePciHostdevs, pcidevs) < 0)
-            goto cleanup;
-    }
-
-    /* Now mark all the devices as active */
-    for (i = 0; i < pciDeviceListCount(pcidevs); i++) {
-        pciDevice *dev = pciDeviceListGet(pcidevs, i);
-        pciDeviceListSteal(pcidevs, dev);
-        if (pciDeviceListAdd(driver->activePciHostdevs, dev) < 0) {
-            pciFreeDevice(dev);
-            goto cleanup;
-        }
-    }
-
-    ret = 0;
-
-cleanup:
-    pciDeviceListFree(pcidevs);
-    return ret;
-}
-
-static int
-qemuPrepareHostPCIDevices(struct qemud_driver *driver,
-                          virDomainDefPtr def)
-{
-    return qemuPrepareHostdevPCIDevices(driver, def->hostdevs, def->nhostdevs);
-}
-
-
-static int
-qemuPrepareHostUSBDevices(struct qemud_driver *driver ATTRIBUTE_UNUSED,
-                          virDomainDefPtr def)
-{
-    int i;
-    for (i = 0 ; i < def->nhostdevs ; i++) {
-        virDomainHostdevDefPtr hostdev = def->hostdevs[i];
-
-        if (hostdev->mode != VIR_DOMAIN_HOSTDEV_MODE_SUBSYS)
-            continue;
-        if (hostdev->source.subsys.type != VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_USB)
-            continue;
-
-        /* Resolve a vendor/product to bus/device */
-        if (hostdev->source.subsys.u.usb.vendor) {
-            usbDevice *usb
-                = usbFindDevice(hostdev->source.subsys.u.usb.vendor,
-                                hostdev->source.subsys.u.usb.product);
-
-            if (!usb)
-                return -1;
-
-            hostdev->source.subsys.u.usb.bus = usbDeviceGetBus(usb);
-            hostdev->source.subsys.u.usb.device = usbDeviceGetDevno(usb);
-
-            usbFreeDevice(usb);
-        }
-    }
-
-    return 0;
-}
-
-static int
-qemuPrepareHostDevices(struct qemud_driver *driver,
-                       virDomainDefPtr def)
-{
-    if (!def->nhostdevs)
-        return 0;
-
-    if (qemuPrepareHostPCIDevices(driver, def) < 0)
-        return -1;
-
-    if (qemuPrepareHostUSBDevices(driver, def) < 0)
-        return -1;
-
-    return 0;
-}
-
-
 static int
 qemuPrepareChardevDevice(virDomainDefPtr def ATTRIBUTE_UNUSED,
                          virDomainChrDefPtr dev,
@@ -2966,80 +2778,6 @@ qemuPrepareChardevDevice(virDomainDefPtr def ATTRIBUTE_UNUSED,
 }
 
 
-static void
-qemudReattachPciDevice(pciDevice *dev, struct qemud_driver *driver)
-{
-    int retries = 100;
-
-    while (pciWaitForDeviceCleanup(dev, "kvm_assigned_device")
-           && retries) {
-        usleep(100*1000);
-        retries--;
-    }
-
-    if (pciDeviceGetManaged(dev)) {
-        if (pciReAttachDevice(dev, driver->activePciHostdevs) < 0) {
-            virErrorPtr err = virGetLastError();
-            VIR_ERROR(_("Failed to re-attach PCI device: %s"),
-                      err ? err->message : _("unknown error"));
-            virResetError(err);
-        }
-    }
-}
-
-static void
-qemuDomainReAttachHostdevDevices(struct qemud_driver *driver,
-                              virDomainHostdevDefPtr *hostdevs,
-                              int nhostdevs)
-{
-    pciDeviceList *pcidevs;
-    int i;
-
-    if (!(pcidevs = qemuGetPciHostDeviceList(hostdevs, nhostdevs))) {
-        virErrorPtr err = virGetLastError();
-        VIR_ERROR(_("Failed to allocate pciDeviceList: %s"),
-                  err ? err->message : _("unknown error"));
-        virResetError(err);
-        return;
-    }
-
-    /* Again 3 loops; mark all devices as inactive before reset
-     * them and reset all the devices before re-attach */
-
-    for (i = 0; i < pciDeviceListCount(pcidevs); i++) {
-        pciDevice *dev = pciDeviceListGet(pcidevs, i);
-        pciDeviceListDel(driver->activePciHostdevs, dev);
-    }
-
-    for (i = 0; i < pciDeviceListCount(pcidevs); i++) {
-        pciDevice *dev = pciDeviceListGet(pcidevs, i);
-        if (pciResetDevice(dev, driver->activePciHostdevs, pcidevs) < 0) {
-            virErrorPtr err = virGetLastError();
-            VIR_ERROR(_("Failed to reset PCI device: %s"),
-                      err ? err->message : _("unknown error"));
-            virResetError(err);
-        }
-    }
-
-    for (i = 0; i < pciDeviceListCount(pcidevs); i++) {
-        pciDevice *dev = pciDeviceListGet(pcidevs, i);
-        qemudReattachPciDevice(dev, driver);
-    }
-
-    pciDeviceListFree(pcidevs);
-}
-
-static void
-qemuDomainReAttachHostDevices(struct qemud_driver *driver,
-                              virDomainDefPtr def)
-{
-    if (!def->nhostdevs)
-        return;
-
-    qemuDomainReAttachHostdevDevices(driver, def->hostdevs, def->nhostdevs);
-}
-
-
 struct qemudHookData {
     virConnectPtr conn;
     virDomainObjPtr vm;
@@ -8767,7 +8505,7 @@ static int qemudDomainDetachHostPciDevice(struct qemud_driver *driver,
         pciDeviceListDel(driver->activePciHostdevs, pci);
         if (pciResetDevice(pci, driver->activePciHostdevs, NULL) < 0)
             ret = -1;
-        qemudReattachPciDevice(pci, driver);
+        qemuReattachPciDevice(pci, driver);
         pciFreeDevice(pci);
     }
 
diff --git a/src/qemu/qemu_hostdev.c b/src/qemu/qemu_hostdev.c
new file mode 100644
index 0000000..f4b2108
--- /dev/null
+++ b/src/qemu/qemu_hostdev.c
@@ -0,0 +1,289 @@
+/*
+ * qemu_hostdev.c: QEMU hostdev management
+ *
+ * Copyright (C) 2006-2007, 2009-2010 Red Hat, Inc.
+ * Copyright (C) 2006 Daniel P. Berrange
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307  USA
+ *
+ * Author: Daniel P. Berrange <berrange redhat com>
+ */
+
+#include <config.h>
+
+#include "qemu_hostdev.h"
+#include "logging.h"
+#include "virterror_internal.h"
+#include "memory.h"
+#include "pci.h"
+#include "hostusb.h"
+
+static pciDeviceList *
+qemuGetPciHostDeviceList(virDomainHostdevDefPtr *hostdevs, int nhostdevs)
+{
+    pciDeviceList *list;
+    int i;
+
+    if (!(list = pciDeviceListNew()))
+        return NULL;
+
+    for (i = 0 ; i < nhostdevs ; i++) {
+        virDomainHostdevDefPtr hostdev = hostdevs[i];
+        pciDevice *dev;
+
+        if (hostdev->mode != VIR_DOMAIN_HOSTDEV_MODE_SUBSYS)
+            continue;
+        if (hostdev->source.subsys.type != VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_PCI)
+            continue;
+
+        dev = pciGetDevice(hostdev->source.subsys.u.pci.domain,
+                           hostdev->source.subsys.u.pci.bus,
+                           hostdev->source.subsys.u.pci.slot,
+                           hostdev->source.subsys.u.pci.function);
+        if (!dev) {
+            pciDeviceListFree(list);
+            return NULL;
+        }
+
+        if (pciDeviceListAdd(list, dev) < 0) {
+            pciFreeDevice(dev);
+            pciDeviceListFree(list);
+            return NULL;
+        }
+
+        pciDeviceSetManaged(dev, hostdev->managed);
+    }
+
+    return list;
+}
+
+
+int qemuUpdateActivePciHostdevs(struct qemud_driver *driver,
+                                virDomainDefPtr def)
+{
+    pciDeviceList *pcidevs;
+    int i;
+    int ret = -1;
+
+    if (!def->nhostdevs)
+        return 0;
+
+    if (!(pcidevs = qemuGetPciHostDeviceList(def->hostdevs, def->nhostdevs)))
+        return -1;
+
+    for (i = 0; i < pciDeviceListCount(pcidevs); i++) {
+        pciDevice *dev = pciDeviceListGet(pcidevs, i);
+        pciDeviceListSteal(pcidevs, dev);
+        if (pciDeviceListAdd(driver->activePciHostdevs, dev) < 0) {
+            pciFreeDevice(dev);
+            goto cleanup;
+        }
+    }
+
+    ret = 0;
+
+cleanup:
+    pciDeviceListFree(pcidevs);
+    return ret;
+}
+
+
+
+int qemuPrepareHostdevPCIDevices(struct qemud_driver *driver,
+                                 virDomainHostdevDefPtr *hostdevs,
+                                 int nhostdevs)
+{
+    pciDeviceList *pcidevs;
+    int i;
+    int ret = -1;
+
+    if (!(pcidevs = qemuGetPciHostDeviceList(hostdevs, nhostdevs)))
+        return -1;
+
+    /* We have to use 3 loops here. *All* devices must
+     * be detached before we reset any of them, because
+     * in some cases you have to reset the whole PCI,
+     * which impacts all devices on it. Also, all devices
+     * must be reset before being marked as active.
+     */
+
+    /* XXX validate that non-managed device isn't in use, eg
+     * by checking that device is either un-bound, or bound
+     * to pci-stub.ko
+     */
+
+    for (i = 0; i < pciDeviceListCount(pcidevs); i++) {
+        pciDevice *dev = pciDeviceListGet(pcidevs, i);
+        if (!pciDeviceIsAssignable(dev, !driver->relaxedACS))
+            goto cleanup;
+
+        if (pciDeviceGetManaged(dev) &&
+            pciDettachDevice(dev, driver->activePciHostdevs) < 0)
+            goto cleanup;
+    }
+
+    /* Now that all the PCI hostdevs have be dettached, we can safely
+     * reset them */
+    for (i = 0; i < pciDeviceListCount(pcidevs); i++) {
+        pciDevice *dev = pciDeviceListGet(pcidevs, i);
+        if (pciResetDevice(dev, driver->activePciHostdevs, pcidevs) < 0)
+            goto cleanup;
+    }
+
+    /* Now mark all the devices as active */
+    for (i = 0; i < pciDeviceListCount(pcidevs); i++) {
+        pciDevice *dev = pciDeviceListGet(pcidevs, i);
+        pciDeviceListSteal(pcidevs, dev);
+        if (pciDeviceListAdd(driver->activePciHostdevs, dev) < 0) {
+            pciFreeDevice(dev);
+            goto cleanup;
+        }
+    }
+
+    ret = 0;
+
+cleanup:
+    pciDeviceListFree(pcidevs);
+    return ret;
+}
+
+static int
+qemuPrepareHostPCIDevices(struct qemud_driver *driver,
+                          virDomainDefPtr def)
+{
+    return qemuPrepareHostdevPCIDevices(driver, def->hostdevs, def->nhostdevs);
+}
+
+
+static int
+qemuPrepareHostUSBDevices(struct qemud_driver *driver ATTRIBUTE_UNUSED,
+                          virDomainDefPtr def)
+{
+    int i;
+    for (i = 0 ; i < def->nhostdevs ; i++) {
+        virDomainHostdevDefPtr hostdev = def->hostdevs[i];
+
+        if (hostdev->mode != VIR_DOMAIN_HOSTDEV_MODE_SUBSYS)
+            continue;
+        if (hostdev->source.subsys.type != VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_USB)
+            continue;
+
+        /* Resolve a vendor/product to bus/device */
+        if (hostdev->source.subsys.u.usb.vendor) {
+            usbDevice *usb
+                = usbFindDevice(hostdev->source.subsys.u.usb.vendor,
+                                hostdev->source.subsys.u.usb.product);
+
+            if (!usb)
+                return -1;
+
+            hostdev->source.subsys.u.usb.bus = usbDeviceGetBus(usb);
+            hostdev->source.subsys.u.usb.device = usbDeviceGetDevno(usb);
+
+            usbFreeDevice(usb);
+        }
+    }
+
+    return 0;
+}
+
+
+int qemuPrepareHostDevices(struct qemud_driver *driver,
+                           virDomainDefPtr def)
+{
+    if (!def->nhostdevs)
+        return 0;
+
+    if (qemuPrepareHostPCIDevices(driver, def) < 0)
+        return -1;
+
+    if (qemuPrepareHostUSBDevices(driver, def) < 0)
+        return -1;
+
+    return 0;
+}
+
+
+void qemuReattachPciDevice(pciDevice *dev, struct qemud_driver *driver)
+{
+    int retries = 100;
+
+    while (pciWaitForDeviceCleanup(dev, "kvm_assigned_device")
+           && retries) {
+        usleep(100*1000);
+        retries--;
+    }
+
+    if (pciDeviceGetManaged(dev)) {
+        if (pciReAttachDevice(dev, driver->activePciHostdevs) < 0) {
+            virErrorPtr err = virGetLastError();
+            VIR_ERROR(_("Failed to re-attach PCI device: %s"),
+                      err ? err->message : _("unknown error"));
+            virResetError(err);
+        }
+    }
+}
+
+
+void qemuDomainReAttachHostdevDevices(struct qemud_driver *driver,
+                                      virDomainHostdevDefPtr *hostdevs,
+                                      int nhostdevs)
+{
+    pciDeviceList *pcidevs;
+    int i;
+
+    if (!(pcidevs = qemuGetPciHostDeviceList(hostdevs, nhostdevs))) {
+        virErrorPtr err = virGetLastError();
+        VIR_ERROR(_("Failed to allocate pciDeviceList: %s"),
+                  err ? err->message : _("unknown error"));
+        virResetError(err);
+        return;
+    }
+
+    /* Again 3 loops; mark all devices as inactive before reset
+     * them and reset all the devices before re-attach */
+
+    for (i = 0; i < pciDeviceListCount(pcidevs); i++) {
+        pciDevice *dev = pciDeviceListGet(pcidevs, i);
+        pciDeviceListDel(driver->activePciHostdevs, dev);
+    }
+
+    for (i = 0; i < pciDeviceListCount(pcidevs); i++) {
+        pciDevice *dev = pciDeviceListGet(pcidevs, i);
+        if (pciResetDevice(dev, driver->activePciHostdevs, pcidevs) < 0) {
+            virErrorPtr err = virGetLastError();
+            VIR_ERROR(_("Failed to reset PCI device: %s"),
+                      err ? err->message : _("unknown error"));
+            virResetError(err);
+        }
+    }
+
+    for (i = 0; i < pciDeviceListCount(pcidevs); i++) {
+        pciDevice *dev = pciDeviceListGet(pcidevs, i);
+        qemuReattachPciDevice(dev, driver);
+    }
+
+    pciDeviceListFree(pcidevs);
+}
+
+
+void qemuDomainReAttachHostDevices(struct qemud_driver *driver,
+                                   virDomainDefPtr def)
+{
+    if (!def->nhostdevs)
+        return;
+
+    qemuDomainReAttachHostdevDevices(driver, def->hostdevs, def->nhostdevs);
+}
diff --git a/src/qemu/qemu_hostdev.h b/src/qemu/qemu_hostdev.h
new file mode 100644
index 0000000..96181b5
--- /dev/null
+++ b/src/qemu/qemu_hostdev.h
@@ -0,0 +1,45 @@
+/*
+ * qemu_hostdev.h: QEMU hostdev management
+ *
+ * Copyright (C) 2006-2007, 2009-2010 Red Hat, Inc.
+ * Copyright (C) 2006 Daniel P. Berrange
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307  USA
+ *
+ * Author: Daniel P. Berrange <berrange redhat com>
+ */
+
+#ifndef __QEMU_HOSTDEV_H__
+# define __QEMU_HOSTDEV_H__
+
+#include "qemu_conf.h"
+#include "domain_conf.h"
+
+int qemuUpdateActivePciHostdevs(struct qemud_driver *driver,
+                                virDomainDefPtr def);
+int qemuPrepareHostdevPCIDevices(struct qemud_driver *driver,
+                                 virDomainHostdevDefPtr *hostdevs,
+                                 int nhostdevs);
+int qemuPrepareHostDevices(struct qemud_driver *driver,
+                           virDomainDefPtr def);
+void qemuReattachPciDevice(pciDevice *dev, struct qemud_driver *driver);
+void qemuDomainReAttachHostdevDevices(struct qemud_driver *driver,
+                                      virDomainHostdevDefPtr *hostdevs,
+                                      int nhostdevs);
+void qemuDomainReAttachHostDevices(struct qemud_driver *driver,
+                                   virDomainDefPtr def);
+
+
+#endif /* __QEMU_HOSTDEV_H__ */
-- 
1.7.2.3


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