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[libvirt] [PATCH v8 08/14] conf: Introduce parser, formatter for uid and fid



This patch introduces new XML parser/formatter functions. Uid is
16-bit and non-zero. Fid is 32-bit. They are the two attributes of zpci
which is introduced as PCI address element. Zpci element is parsed and
formatted along with PCI address. And add the related test cases.

Signed-off-by: Yi Min Zhao <zyimin linux ibm com>
Reviewed-by: Boris Fiuczynski <fiuczy linux ibm com>
Reviewed-by: Stefan Zimmermann <stzi linux ibm com>
Reviewed-by: Bjoern Walk <bwalk linux ibm com>
Reviewed-by: Ján Tomko <jtomko redhat com>
Reviewed-by: Andrea Bolognani <abologna redhat com>
---
 docs/schemas/basictypes.rng                   | 27 ++++++++++
 docs/schemas/domaincommon.rng                 |  1 +
 src/conf/device_conf.c                        | 53 +++++++++++++++++++
 src/conf/domain_addr.c                        |  3 ++
 src/conf/domain_conf.c                        | 12 ++++-
 src/libvirt_private.syms                      |  2 +
 src/util/virpci.c                             | 26 +++++++++
 src/util/virpci.h                             |  6 +++
 .../disk-virtio-s390-zpci.args                | 25 +++++++++
 .../disk-virtio-s390-zpci.xml                 | 19 +++++++
 tests/qemuxml2argvdata/hostdev-vfio-zpci.args | 23 ++++++++
 tests/qemuxml2argvdata/hostdev-vfio-zpci.xml  | 21 ++++++++
 tests/qemuxml2argvtest.c                      |  7 +++
 .../disk-virtio-s390-zpci.xml                 | 31 +++++++++++
 .../qemuxml2xmloutdata/hostdev-vfio-zpci.xml  | 32 +++++++++++
 tests/qemuxml2xmltest.c                       |  6 +++
 16 files changed, 293 insertions(+), 1 deletion(-)
 create mode 100644 tests/qemuxml2argvdata/disk-virtio-s390-zpci.args
 create mode 100644 tests/qemuxml2argvdata/disk-virtio-s390-zpci.xml
 create mode 100644 tests/qemuxml2argvdata/hostdev-vfio-zpci.args
 create mode 100644 tests/qemuxml2argvdata/hostdev-vfio-zpci.xml
 create mode 100644 tests/qemuxml2xmloutdata/disk-virtio-s390-zpci.xml
 create mode 100644 tests/qemuxml2xmloutdata/hostdev-vfio-zpci.xml

diff --git a/docs/schemas/basictypes.rng b/docs/schemas/basictypes.rng
index 14a3670e5c..71a6db3bb4 100644
--- a/docs/schemas/basictypes.rng
+++ b/docs/schemas/basictypes.rng
@@ -65,6 +65,17 @@
       </data>
     </choice>
   </define>
+  <define name="uint32">
+    <choice>
+      <data type="string">
+        <param name="pattern">(0x)?[0-9a-fA-F]{1,8}</param>
+      </data>
+      <data type="unsignedInt">
+        <param name="minInclusive">0</param>
+        <param name="maxInclusive">4294967295</param>
+      </data>
+    </choice>
+  </define>
 
   <define name="UUID">
     <choice>
@@ -111,6 +122,22 @@
       </attribute>
     </optional>
   </define>
+  <define name="zpciaddress">
+    <optional>
+      <element name="zpci">
+        <optional>
+          <attribute name="uid">
+            <ref name="uint16"/>
+          </attribute>
+        </optional>
+        <optional>
+          <attribute name="fid">
+            <ref name="uint32"/>
+          </attribute>
+        </optional>
+      </element>
+    </optional>
+  </define>
 
   <!-- a 6 byte MAC address in ASCII-hex format, eg "12:34:56:78:9A:BC" -->
   <!-- The lowest bit of the 1st byte is the "multicast" bit. a         -->
diff --git a/docs/schemas/domaincommon.rng b/docs/schemas/domaincommon.rng
index b9ac5df479..d2f5f16266 100644
--- a/docs/schemas/domaincommon.rng
+++ b/docs/schemas/domaincommon.rng
@@ -5221,6 +5221,7 @@
             <value>pci</value>
           </attribute>
           <ref name="pciaddress"/>
+          <ref name="zpciaddress"/>
         </group>
         <group>
           <attribute name="type">
diff --git a/src/conf/device_conf.c b/src/conf/device_conf.c
index 98a419f40f..f9f6b6e38f 100644
--- a/src/conf/device_conf.c
+++ b/src/conf/device_conf.c
@@ -47,6 +47,45 @@ VIR_ENUM_IMPL(virDomainDeviceAddress, VIR_DOMAIN_DEVICE_ADDRESS_TYPE_LAST,
               "dimm",
 );
 
+static int
+virZPCIDeviceAddressParseXML(xmlNodePtr node,
+                             virPCIDeviceAddressPtr addr)
+{
+    virZPCIDeviceAddress def = { 0 };
+    char *uid;
+    char *fid;
+    int ret = -1;
+
+    uid = virXMLPropString(node, "uid");
+    fid = virXMLPropString(node, "fid");
+
+    if (uid &&
+        virStrToLong_uip(uid, NULL, 0, &def.uid) < 0) {
+        virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+                       _("Cannot parse <address> 'uid' attribute"));
+        goto cleanup;
+    }
+
+    if (fid &&
+        virStrToLong_uip(fid, NULL, 0, &def.fid) < 0) {
+        virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+                       _("Cannot parse <address> 'fid' attribute"));
+        goto cleanup;
+    }
+
+    if (!virZPCIDeviceAddressIsEmpty(&def) &&
+        !virZPCIDeviceAddressIsValid(&def))
+        goto cleanup;
+
+    addr->zpci = def;
+    ret = 0;
+
+ cleanup:
+    VIR_FREE(uid);
+    VIR_FREE(fid);
+    return ret;
+}
+
 int
 virDomainDeviceInfoCopy(virDomainDeviceInfoPtr dst,
                         virDomainDeviceInfoPtr src)
@@ -181,6 +220,8 @@ virPCIDeviceAddressParseXML(xmlNodePtr node,
                             virPCIDeviceAddressPtr addr)
 {
     char *domain, *slot, *bus, *function, *multi;
+    xmlNodePtr cur;
+    xmlNodePtr zpci = NULL;
     int ret = -1;
 
     memset(addr, 0, sizeof(*addr));
@@ -230,6 +271,18 @@ virPCIDeviceAddressParseXML(xmlNodePtr node,
     if (!virPCIDeviceAddressIsEmpty(addr) && !virPCIDeviceAddressIsValid(addr, true))
         goto cleanup;
 
+    cur = node->children;
+    while (cur) {
+        if (cur->type == XML_ELEMENT_NODE &&
+            virXMLNodeNameEqual(cur, "zpci")) {
+            zpci = cur;
+        }
+        cur = cur->next;
+    }
+
+    if (zpci && virZPCIDeviceAddressParseXML(zpci, addr) < 0)
+        goto cleanup;
+
     ret = 0;
 
  cleanup:
diff --git a/src/conf/domain_addr.c b/src/conf/domain_addr.c
index 0c00302c13..380091f049 100644
--- a/src/conf/domain_addr.c
+++ b/src/conf/domain_addr.c
@@ -1040,6 +1040,9 @@ virDomainPCIAddressReserveNextAddr(virDomainPCIAddressSetPtr addrs,
                                                dev->isolationGroup, false) < 0)
         return -1;
 
+    addr.extFlags = dev->addr.pci.extFlags;
+    addr.zpci = dev->addr.pci.zpci;
+
     if (!addrs->dryRun) {
         dev->type = VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI;
         dev->addr.pci = addr;
diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 3e89659d3e..f3d0a60360 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -6429,6 +6429,7 @@ virDomainDeviceInfoFormat(virBufferPtr buf,
                           unsigned int flags)
 {
     virBuffer attrBuf = VIR_BUFFER_INITIALIZER;
+    virBuffer childBuf = VIR_BUFFER_INITIALIZER;
 
     if ((flags & VIR_DOMAIN_DEF_FORMAT_ALLOW_BOOT) && info->bootIndex) {
         virBufferAsprintf(buf, "<boot order='%u'", info->bootIndex);
@@ -6491,6 +6492,14 @@ virDomainDeviceInfoFormat(virBufferPtr buf,
             virBufferAsprintf(&attrBuf, " multifunction='%s'",
                               virTristateSwitchTypeToString(info->addr.pci.multi));
         }
+
+        if (!virZPCIDeviceAddressIsEmpty(&info->addr.pci.zpci)) {
+            virBufferSetChildIndent(&childBuf, buf);
+            virBufferAsprintf(&childBuf,
+                              "<zpci uid='0x%.4x' fid='0x%.8x'/>\n",
+                              info->addr.pci.zpci.uid,
+                              info->addr.pci.zpci.fid);
+        }
         break;
 
     case VIR_DOMAIN_DEVICE_ADDRESS_TYPE_DRIVE:
@@ -6558,9 +6567,10 @@ virDomainDeviceInfoFormat(virBufferPtr buf,
         break;
     }
 
-    virXMLFormatElement(buf, "address", &attrBuf, NULL);
+    virXMLFormatElement(buf, "address", &attrBuf, &childBuf);
 
     virBufferFreeAndReset(&attrBuf);
+    virBufferFreeAndReset(&childBuf);
 }
 
 static int
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index 335210c31d..7daf52bc0a 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -2568,6 +2568,8 @@ virPCIHeaderTypeToString;
 virPCIIsVirtualFunction;
 virPCIStubDriverTypeFromString;
 virPCIStubDriverTypeToString;
+virZPCIDeviceAddressIsEmpty;
+virZPCIDeviceAddressIsValid;
 
 
 # util/virperf.h
diff --git a/src/util/virpci.c b/src/util/virpci.c
index 0f680efbe6..efa2d1662a 100644
--- a/src/util/virpci.c
+++ b/src/util/virpci.c
@@ -2563,6 +2563,32 @@ virPCIDeviceAddressParse(char *address,
 
 #ifdef __linux__
 
+bool
+virZPCIDeviceAddressIsValid(virZPCIDeviceAddressPtr zpci)
+{
+    /* We don't need to check fid because fid covers
+     * all range of uint32 type.
+     */
+    if (zpci->uid > VIR_DOMAIN_DEVICE_ZPCI_MAX_UID ||
+        zpci->uid == 0) {
+        virReportError(VIR_ERR_XML_ERROR,
+                       _("Invalid PCI address uid='0x%.4x', "
+                         "must be > 0x0000 and <= 0x%.4x"),
+                       zpci->uid,
+                       VIR_DOMAIN_DEVICE_ZPCI_MAX_UID);
+        return false;
+    }
+
+    return true;
+}
+
+bool
+virZPCIDeviceAddressIsEmpty(const virZPCIDeviceAddress *addr)
+{
+    return !(addr->uid || addr->fid);
+}
+
+
 /*
  * returns true if equal
  */
diff --git a/src/util/virpci.h b/src/util/virpci.h
index 0e40d86b97..a2e795eff9 100644
--- a/src/util/virpci.h
+++ b/src/util/virpci.h
@@ -37,6 +37,9 @@ typedef virPCIDeviceAddress *virPCIDeviceAddressPtr;
 typedef struct _virPCIDeviceList virPCIDeviceList;
 typedef virPCIDeviceList *virPCIDeviceListPtr;
 
+# define VIR_DOMAIN_DEVICE_ZPCI_MAX_UID UINT16_MAX
+# define VIR_DOMAIN_DEVICE_ZPCI_MAX_FID UINT32_MAX
+
 typedef struct _virZPCIDeviceAddress virZPCIDeviceAddress;
 typedef virZPCIDeviceAddress *virZPCIDeviceAddressPtr;
 struct _virZPCIDeviceAddress {
@@ -239,6 +242,9 @@ char *virPCIDeviceAddressAsString(virPCIDeviceAddressPtr addr)
 
 int virPCIDeviceAddressParse(char *address, virPCIDeviceAddressPtr bdf);
 
+bool virZPCIDeviceAddressIsValid(virZPCIDeviceAddressPtr zpci);
+bool virZPCIDeviceAddressIsEmpty(const virZPCIDeviceAddress *addr);
+
 int virPCIGetVirtualFunctionInfo(const char *vf_sysfs_device_path,
                                  int pfNetDevIdx,
                                  char **pfname,
diff --git a/tests/qemuxml2argvdata/disk-virtio-s390-zpci.args b/tests/qemuxml2argvdata/disk-virtio-s390-zpci.args
new file mode 100644
index 0000000000..8ac435cb3e
--- /dev/null
+++ b/tests/qemuxml2argvdata/disk-virtio-s390-zpci.args
@@ -0,0 +1,25 @@
+LC_ALL=C \
+PATH=/bin \
+HOME=/home/test \
+USER=test \
+LOGNAME=test \
+QEMU_AUDIO_DRV=none \
+/usr/bin/qemu-system-s390x \
+-name QEMUGuest1 \
+-S \
+-machine s390-ccw-virtio,accel=tcg,usb=off,dump-guest-core=off \
+-m 214 \
+-smp 1,sockets=1,cores=1,threads=1 \
+-uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
+-display none \
+-no-user-config \
+-nodefaults \
+-chardev socket,id=charmonitor,path=/tmp/lib/domain--1-QEMUGuest1/monitor.sock,\
+server,nowait \
+-mon chardev=charmonitor,id=monitor,mode=control \
+-rtc base=utc \
+-no-shutdown \
+-drive file=/dev/HostVG/QEMUGuest1,format=raw,if=none,id=drive-virtio-disk0 \
+-device virtio-blk-pci,bus=pci.0,addr=0x8,drive=drive-virtio-disk0,\
+id=virtio-disk0,bootindex=1 \
+-device virtio-balloon-ccw,id=balloon0,devno=fe.0.0000
diff --git a/tests/qemuxml2argvdata/disk-virtio-s390-zpci.xml b/tests/qemuxml2argvdata/disk-virtio-s390-zpci.xml
new file mode 100644
index 0000000000..8bf4a23670
--- /dev/null
+++ b/tests/qemuxml2argvdata/disk-virtio-s390-zpci.xml
@@ -0,0 +1,19 @@
+<domain type='qemu'>
+  <name>QEMUGuest1</name>
+  <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
+  <memory>219136</memory>
+  <vcpu>1</vcpu>
+  <os>
+    <type arch='s390x' machine='s390-ccw-virtio'>hvm</type>
+  </os>
+  <devices>
+    <emulator>/usr/bin/qemu-system-s390x</emulator>
+    <disk type='block' device='disk'>
+      <source dev='/dev/HostVG/QEMUGuest1'/>
+      <target dev='hda' bus='virtio'/>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x08' function='0x0'>
+        <zpci uid='0x0019' fid='0x0000001f'/>
+      </address>
+    </disk>
+  </devices>
+</domain>
diff --git a/tests/qemuxml2argvdata/hostdev-vfio-zpci.args b/tests/qemuxml2argvdata/hostdev-vfio-zpci.args
new file mode 100644
index 0000000000..d6b1520c47
--- /dev/null
+++ b/tests/qemuxml2argvdata/hostdev-vfio-zpci.args
@@ -0,0 +1,23 @@
+LC_ALL=C \
+PATH=/bin \
+HOME=/home/test \
+USER=test \
+LOGNAME=test \
+QEMU_AUDIO_DRV=none \
+/usr/bin/qemu-system-s390x \
+-name QEMUGuest1 \
+-S \
+-machine s390-ccw-virtio,accel=tcg,usb=off,dump-guest-core=off \
+-m 214 \
+-smp 1,sockets=1,cores=1,threads=1 \
+-uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
+-display none \
+-no-user-config \
+-nodefaults \
+-chardev socket,id=charmonitor,path=/tmp/lib/domain--1-QEMUGuest1/monitor.sock,\
+server,nowait \
+-mon chardev=charmonitor,id=monitor,mode=control \
+-rtc base=utc \
+-no-shutdown \
+-device vfio-pci,host=00:00.0,id=hostdev0,bus=pci.0,addr=0x8 \
+-device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x1
diff --git a/tests/qemuxml2argvdata/hostdev-vfio-zpci.xml b/tests/qemuxml2argvdata/hostdev-vfio-zpci.xml
new file mode 100644
index 0000000000..002b99c52d
--- /dev/null
+++ b/tests/qemuxml2argvdata/hostdev-vfio-zpci.xml
@@ -0,0 +1,21 @@
+<domain type='qemu'>
+  <name>QEMUGuest1</name>
+  <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
+  <memory>219100</memory>
+  <os>
+    <type arch='s390x' machine='s390-ccw-virtio'>hvm</type>
+  </os>
+  <devices>
+    <emulator>/usr/bin/qemu-system-s390x</emulator>
+    <controller type='pci' index='0' model='pci-root'/>
+    <hostdev mode='subsystem' type='pci' managed='no'>
+      <driver name='vfio'/>
+      <source>
+        <address domain='0x0000' bus='0x00' slot='0x00' function='0x0'/>
+      </source>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x08' function='0x0'>
+        <zpci uid='0x0019' fid='0x0000001f'/>
+      </address>
+    </hostdev>
+  </devices>
+</domain>
diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c
index 39a7f1f53c..7b9e6bf2be 100644
--- a/tests/qemuxml2argvtest.c
+++ b/tests/qemuxml2argvtest.c
@@ -1076,6 +1076,10 @@ mymain(void)
             QEMU_CAPS_CCW, QEMU_CAPS_VIRTIO_S390);
     DO_TEST("disk-virtio-scsi-ccw", QEMU_CAPS_VIRTIO_SCSI,
             QEMU_CAPS_CCW, QEMU_CAPS_VIRTIO_S390);
+    DO_TEST("disk-virtio-s390-zpci",
+            QEMU_CAPS_DEVICE_ZPCI,
+            QEMU_CAPS_CCW,
+            QEMU_CAPS_VIRTIO_S390);
     DO_TEST("disk-order", QEMU_CAPS_VIRTIO_BLK_SCSI);
     DO_TEST("disk-virtio-queues",
             QEMU_CAPS_VIRTIO_BLK_NUM_QUEUES);
@@ -1679,6 +1683,9 @@ mymain(void)
     DO_TEST_PARSE_ERROR("hostdev-mdev-display-missing-graphics",
             QEMU_CAPS_DEVICE_VFIO_PCI,
             QEMU_CAPS_VFIO_PCI_DISPLAY);
+    DO_TEST("hostdev-vfio-zpci",
+            QEMU_CAPS_DEVICE_VFIO_PCI,
+            QEMU_CAPS_DEVICE_ZPCI);
     DO_TEST("pci-rom", NONE);
     DO_TEST("pci-rom-disabled", NONE);
     DO_TEST("pci-rom-disabled-invalid", NONE);
diff --git a/tests/qemuxml2xmloutdata/disk-virtio-s390-zpci.xml b/tests/qemuxml2xmloutdata/disk-virtio-s390-zpci.xml
new file mode 100644
index 0000000000..37684c82b1
--- /dev/null
+++ b/tests/qemuxml2xmloutdata/disk-virtio-s390-zpci.xml
@@ -0,0 +1,31 @@
+<domain type='qemu'>
+  <name>QEMUGuest1</name>
+  <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
+  <memory unit='KiB'>219136</memory>
+  <currentMemory unit='KiB'>219136</currentMemory>
+  <vcpu placement='static'>1</vcpu>
+  <os>
+    <type arch='s390x' machine='s390-ccw-virtio'>hvm</type>
+    <boot dev='hd'/>
+  </os>
+  <clock offset='utc'/>
+  <on_poweroff>destroy</on_poweroff>
+  <on_reboot>restart</on_reboot>
+  <on_crash>destroy</on_crash>
+  <devices>
+    <emulator>/usr/bin/qemu-system-s390x</emulator>
+    <disk type='block' device='disk'>
+      <driver name='qemu' type='raw'/>
+      <source dev='/dev/HostVG/QEMUGuest1'/>
+      <target dev='hda' bus='virtio'/>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x08' function='0x0'>
+        <zpci uid='0x0019' fid='0x0000001f'/>
+      </address>
+    </disk>
+    <controller type='pci' index='0' model='pci-root'/>
+    <memballoon model='virtio'>
+      <address type='ccw' cssid='0xfe' ssid='0x0' devno='0x0000'/>
+    </memballoon>
+    <panic model='s390'/>
+  </devices>
+</domain>
diff --git a/tests/qemuxml2xmloutdata/hostdev-vfio-zpci.xml b/tests/qemuxml2xmloutdata/hostdev-vfio-zpci.xml
new file mode 100644
index 0000000000..fc8c38ab66
--- /dev/null
+++ b/tests/qemuxml2xmloutdata/hostdev-vfio-zpci.xml
@@ -0,0 +1,32 @@
+<domain type='qemu'>
+  <name>QEMUGuest1</name>
+  <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
+  <memory unit='KiB'>219100</memory>
+  <currentMemory unit='KiB'>219100</currentMemory>
+  <vcpu placement='static'>1</vcpu>
+  <os>
+    <type arch='s390x' machine='s390-ccw-virtio'>hvm</type>
+    <boot dev='hd'/>
+  </os>
+  <clock offset='utc'/>
+  <on_poweroff>destroy</on_poweroff>
+  <on_reboot>restart</on_reboot>
+  <on_crash>destroy</on_crash>
+  <devices>
+    <emulator>/usr/bin/qemu-system-s390x</emulator>
+    <controller type='pci' index='0' model='pci-root'/>
+    <hostdev mode='subsystem' type='pci' managed='no'>
+      <driver name='vfio'/>
+      <source>
+        <address domain='0x0000' bus='0x00' slot='0x00' function='0x0'/>
+      </source>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x08' function='0x0'>
+        <zpci uid='0x0019' fid='0x0000001f'/>
+      </address>
+    </hostdev>
+    <memballoon model='virtio'>
+      <address type='ccw' cssid='0xfe' ssid='0x0' devno='0x0000'/>
+    </memballoon>
+    <panic model='s390'/>
+  </devices>
+</domain>
diff --git a/tests/qemuxml2xmltest.c b/tests/qemuxml2xmltest.c
index 89640f641a..53de9726f4 100644
--- a/tests/qemuxml2xmltest.c
+++ b/tests/qemuxml2xmltest.c
@@ -376,6 +376,9 @@ mymain(void)
             QEMU_CAPS_VIRTIO_SCSI);
     DO_TEST("disk-virtio-scsi-ioeventfd",
             QEMU_CAPS_VIRTIO_SCSI);
+    DO_TEST("disk-virtio-s390-zpci",
+            QEMU_CAPS_DEVICE_ZPCI,
+            QEMU_CAPS_CCW);
     DO_TEST("disk-scsi-megasas",
             QEMU_CAPS_SCSI_MEGASAS);
     DO_TEST("disk-scsi-mptsas1068",
@@ -458,6 +461,9 @@ mymain(void)
     DO_TEST("hostdev-usb-address", NONE);
     DO_TEST("hostdev-pci-address", NONE);
     DO_TEST("hostdev-vfio", NONE);
+    DO_TEST("hostdev-vfio-zpci",
+            QEMU_CAPS_DEVICE_ZPCI,
+            QEMU_CAPS_CCW);
     DO_TEST("hostdev-mdev-precreated", NONE);
     DO_TEST("hostdev-mdev-display", QEMU_CAPS_VFIO_PCI_DISPLAY);
     DO_TEST("pci-rom", NONE);
-- 
Yi Min


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