[libvirt] [PATCH 09/14] conf: Add VIR_DOMAIN_CHR_SERIAL_TARGET_TYPE_PL011

Andrea Bolognani posted 14 patches 7 years, 6 months ago
There is a newer version of this series
[libvirt] [PATCH 09/14] conf: Add VIR_DOMAIN_CHR_SERIAL_TARGET_TYPE_PL011
Posted by Andrea Bolognani 7 years, 6 months ago
We can finally introduce a specific target type for the pl011 device
used by mach-virt guests, which means isa-serial will no longer show
up to confuse users.

We make sure migration works in both directions by interpreting the
isa-serial target type, or the lack of target type, appropriately
when parsing the guest XML, and skipping the newly-introduced type
when formatting if for migration. We also verify that pl011 is not
used for non-mach-virt guests and add a bunch of test cases.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=151292

Signed-off-by: Andrea Bolognani <abologna@redhat.com>
---
 docs/formatdomain.html.in                          |  3 +-
 docs/schemas/domaincommon.rng                      |  1 +
 src/conf/domain_conf.c                             |  2 ++
 src/conf/domain_conf.h                             |  1 +
 src/qemu/qemu_command.c                            |  7 ++--
 src/qemu/qemu_domain.c                             | 12 +++++++
 src/qemu/qemu_domain_address.c                     |  1 +
 .../qemuxml2argv-mach-virt-console-native.args     |  1 +
 .../qemuxml2argv-mach-virt-console-native.xml      | 17 +++++++++
 .../qemuxml2argv-mach-virt-console-virtio.args     | 24 +++++++++++++
 .../qemuxml2argv-mach-virt-console-virtio.xml      | 19 ++++++++++
 ...muxml2argv-mach-virt-serial+console-native.args |  1 +
 ...emuxml2argv-mach-virt-serial+console-native.xml | 18 ++++++++++
 .../qemuxml2argv-mach-virt-serial-compat.args      |  1 +
 .../qemuxml2argv-mach-virt-serial-compat.xml       | 19 ++++++++++
 ...muxml2argv-mach-virt-serial-invalid-machine.xml | 19 ++++++++++
 .../qemuxml2argv-mach-virt-serial-native.args      | 23 ++++++++++++
 .../qemuxml2argv-mach-virt-serial-native.xml       | 16 +++++++++
 .../qemuxml2argv-mach-virt-serial-pci.args         | 26 ++++++++++++++
 .../qemuxml2argv-mach-virt-serial-pci.xml          | 18 ++++++++++
 .../qemuxml2argv-mach-virt-serial-usb.args         | 27 ++++++++++++++
 .../qemuxml2argv-mach-virt-serial-usb.xml          | 21 +++++++++++
 tests/qemuxml2argvtest.c                           | 27 ++++++++++++++
 .../qemuxml2xmlout-aarch64-virtio-pci-default.xml  |  2 +-
 .../qemuxml2xmlout-mach-virt-console-native.xml    |  1 +
 .../qemuxml2xmlout-mach-virt-console-virtio.xml    | 27 ++++++++++++++
 ...uxml2xmlout-mach-virt-serial+console-native.xml |  1 +
 .../qemuxml2xmlout-mach-virt-serial-compat.xml     | 29 +++++++++++++++
 .../qemuxml2xmlout-mach-virt-serial-native.xml     |  1 +
 .../qemuxml2xmlout-mach-virt-serial-pci.xml        | 42 ++++++++++++++++++++++
 .../qemuxml2xmlout-mach-virt-serial-usb.xml        | 39 ++++++++++++++++++++
 tests/qemuxml2xmltest.c                            | 26 ++++++++++++++
 32 files changed, 468 insertions(+), 4 deletions(-)
 create mode 120000 tests/qemuxml2argvdata/qemuxml2argv-mach-virt-console-native.args
 create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-mach-virt-console-native.xml
 create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-mach-virt-console-virtio.args
 create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-mach-virt-console-virtio.xml
 create mode 120000 tests/qemuxml2argvdata/qemuxml2argv-mach-virt-serial+console-native.args
 create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-mach-virt-serial+console-native.xml
 create mode 120000 tests/qemuxml2argvdata/qemuxml2argv-mach-virt-serial-compat.args
 create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-mach-virt-serial-compat.xml
 create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-mach-virt-serial-invalid-machine.xml
 create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-mach-virt-serial-native.args
 create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-mach-virt-serial-native.xml
 create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-mach-virt-serial-pci.args
 create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-mach-virt-serial-pci.xml
 create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-mach-virt-serial-usb.args
 create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-mach-virt-serial-usb.xml
 create mode 120000 tests/qemuxml2xmloutdata/qemuxml2xmlout-mach-virt-console-native.xml
 create mode 100644 tests/qemuxml2xmloutdata/qemuxml2xmlout-mach-virt-console-virtio.xml
 create mode 120000 tests/qemuxml2xmloutdata/qemuxml2xmlout-mach-virt-serial+console-native.xml
 create mode 100644 tests/qemuxml2xmloutdata/qemuxml2xmlout-mach-virt-serial-compat.xml
 create mode 120000 tests/qemuxml2xmloutdata/qemuxml2xmlout-mach-virt-serial-native.xml
 create mode 100644 tests/qemuxml2xmloutdata/qemuxml2xmlout-mach-virt-serial-pci.xml
 create mode 100644 tests/qemuxml2xmloutdata/qemuxml2xmlout-mach-virt-serial-usb.xml

diff --git a/docs/formatdomain.html.in b/docs/formatdomain.html.in
index 7ff097d65..9f46b411a 100644
--- a/docs/formatdomain.html.in
+++ b/docs/formatdomain.html.in
@@ -6528,7 +6528,8 @@ qemu-kvm -net nic,model=? /dev/null
       <code>type</code> attribute <span class="since">since 1.0.2</span>
       which can be used to pick between <code>isa-serial</code>,
       <code>usb-serial</code>, <code>pci-serial</code> and,
-      <span class="since">since 3.10.0</span>, <code>spapr-vty</code>.
+      <span class="since">since 3.10.0</span>, <code>spapr-vty</code> and
+      <code>pl011</code>.
       Some values are not compatible with all architecture and machine types;
       if the value is missing altogether, libvirt will try to pick an
       appropriate default.
diff --git a/docs/schemas/domaincommon.rng b/docs/schemas/domaincommon.rng
index 8f6d035de..6dca83a62 100644
--- a/docs/schemas/domaincommon.rng
+++ b/docs/schemas/domaincommon.rng
@@ -3586,6 +3586,7 @@
         <value>usb-serial</value>
         <value>pci-serial</value>
         <value>spapr-vty</value>
+        <value>pl011</value>
       </choice>
     </attribute>
   </define>
diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index f7faa1a35..aadbfc0cd 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -451,6 +451,7 @@ VIR_ENUM_IMPL(virDomainChrSerialTarget,
               "usb-serial",
               "pci-serial",
               "spapr-vty",
+              "pl011",
 );
 
 VIR_ENUM_IMPL(virDomainChrChannelTarget,
@@ -4043,6 +4044,7 @@ virDomainDefAddConsoleCompat(virDomainDefPtr def)
         switch ((virDomainChrSerialTargetType) def->serials[0]->targetType) {
         case VIR_DOMAIN_CHR_SERIAL_TARGET_TYPE_ISA:
         case VIR_DOMAIN_CHR_SERIAL_TARGET_TYPE_SPAPR:
+        case VIR_DOMAIN_CHR_SERIAL_TARGET_TYPE_PL011:
         case VIR_DOMAIN_CHR_SERIAL_TARGET_TYPE_NONE: {
 
             /* Create a stub console to match the serial port.
diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index 6dd97a0a3..ae239b09c 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -1086,6 +1086,7 @@ typedef enum {
     VIR_DOMAIN_CHR_SERIAL_TARGET_TYPE_USB,
     VIR_DOMAIN_CHR_SERIAL_TARGET_TYPE_PCI,
     VIR_DOMAIN_CHR_SERIAL_TARGET_TYPE_SPAPR,
+    VIR_DOMAIN_CHR_SERIAL_TARGET_TYPE_PL011,
 
     VIR_DOMAIN_CHR_SERIAL_TARGET_TYPE_LAST
 } virDomainChrSerialTargetType;
diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index c38b9ca29..fb6f69123 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -9128,10 +9128,12 @@ qemuChrIsPlatformDevice(const virDomainDef *def,
                         virDomainChrDefPtr chr)
 {
     if (def->os.arch == VIR_ARCH_ARMV7L || def->os.arch == VIR_ARCH_AARCH64) {
-        /* TARGET_TYPE_ISA here really means 'the default platform device' */
+
+        /* pl011 (used on mach-virt) is a platform device */
         if (chr->deviceType == VIR_DOMAIN_CHR_DEVICE_TYPE_SERIAL &&
-            chr->targetType == VIR_DOMAIN_CHR_SERIAL_TARGET_TYPE_ISA)
+            chr->targetType == VIR_DOMAIN_CHR_SERIAL_TARGET_TYPE_PL011) {
             return true;
+        }
     }
 
     /* If we got all the way here and we're still stuck with the default
@@ -10247,6 +10249,7 @@ qemuBuildSerialChrDeviceStr(char **deviceStr,
         }
         break;
 
+    case VIR_DOMAIN_CHR_SERIAL_TARGET_TYPE_PL011:
     case VIR_DOMAIN_CHR_SERIAL_TARGET_TYPE_NONE:
     case VIR_DOMAIN_CHR_SERIAL_TARGET_TYPE_LAST:
         /* Except from _LAST, which is just a guard value and will never
diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
index 9cafbdd27..b506fedd0 100644
--- a/src/qemu/qemu_domain.c
+++ b/src/qemu/qemu_domain.c
@@ -3513,6 +3513,15 @@ qemuDomainChrDefValidate(const virDomainChrDef *dev,
         return -1;
     }
 
+    if (dev->deviceType == VIR_DOMAIN_CHR_DEVICE_TYPE_SERIAL &&
+        dev->targetType == VIR_DOMAIN_CHR_SERIAL_TARGET_TYPE_PL011 &&
+        !qemuDomainIsVirt(def)) {
+        virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
+                       _("pl011 serial devices are only supported on "
+                         "mach-virt guests"));
+        return -1;
+    }
+
     return 0;
 }
 
@@ -4071,6 +4080,8 @@ qemuDomainChrDefPostParse(virDomainChrDefPtr chr,
             chr->targetType = VIR_DOMAIN_CHR_SERIAL_TARGET_TYPE_ISA;
         } else if (qemuDomainIsPSeries(def)) {
             chr->targetType = VIR_DOMAIN_CHR_SERIAL_TARGET_TYPE_SPAPR;
+        } else if (qemuDomainIsVirt(def)) {
+            chr->targetType = VIR_DOMAIN_CHR_SERIAL_TARGET_TYPE_PL011;
         }
     }
 
@@ -4985,6 +4996,7 @@ qemuDomainDefFormatBufInternal(virQEMUDriverPtr driver,
             if (flags & VIR_DOMAIN_XML_MIGRATABLE) {
                 switch ((virDomainChrSerialTargetType) serial->targetType) {
                 case VIR_DOMAIN_CHR_SERIAL_TARGET_TYPE_SPAPR:
+                case VIR_DOMAIN_CHR_SERIAL_TARGET_TYPE_PL011:
                     serial->targetType = VIR_DOMAIN_CHR_SERIAL_TARGET_TYPE_NONE;
                     break;
                 case VIR_DOMAIN_CHR_SERIAL_TARGET_TYPE_ISA:
diff --git a/src/qemu/qemu_domain_address.c b/src/qemu/qemu_domain_address.c
index 27ec5b6c4..4a7854740 100644
--- a/src/qemu/qemu_domain_address.c
+++ b/src/qemu/qemu_domain_address.c
@@ -784,6 +784,7 @@ qemuDomainDeviceCalculatePCIConnectFlags(virDomainDeviceDefPtr dev,
         case VIR_DOMAIN_CHR_SERIAL_TARGET_TYPE_ISA:
         case VIR_DOMAIN_CHR_SERIAL_TARGET_TYPE_USB:
         case VIR_DOMAIN_CHR_SERIAL_TARGET_TYPE_SPAPR:
+        case VIR_DOMAIN_CHR_SERIAL_TARGET_TYPE_PL011:
         case VIR_DOMAIN_CHR_SERIAL_TARGET_TYPE_NONE:
         case VIR_DOMAIN_CHR_SERIAL_TARGET_TYPE_LAST:
             return 0;
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-mach-virt-console-native.args b/tests/qemuxml2argvdata/qemuxml2argv-mach-virt-console-native.args
new file mode 120000
index 000000000..1a90484d3
--- /dev/null
+++ b/tests/qemuxml2argvdata/qemuxml2argv-mach-virt-console-native.args
@@ -0,0 +1 @@
+qemuxml2argv-mach-virt-serial-native.args
\ No newline at end of file
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-mach-virt-console-native.xml b/tests/qemuxml2argvdata/qemuxml2argv-mach-virt-console-native.xml
new file mode 100644
index 000000000..6aba864d0
--- /dev/null
+++ b/tests/qemuxml2argvdata/qemuxml2argv-mach-virt-console-native.xml
@@ -0,0 +1,17 @@
+<domain type='qemu'>
+  <name>guest</name>
+  <uuid>1ccfd97d-5eb4-478a-bbe6-88d254c16db7</uuid>
+  <memory unit='KiB'>524288</memory>
+  <vcpu placement='static'>1</vcpu>
+  <os>
+    <type arch='aarch64' machine='virt'>hvm</type>
+  </os>
+  <devices>
+    <emulator>/usr/bin/qemu-system-aarch64</emulator>
+    <controller type='usb' model='none'/>
+    <!-- The <console> element being present should result in a matching
+         <serial> element being created -->
+    <console type='pty'/>
+    <memballoon model='none'/>
+  </devices>
+</domain>
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-mach-virt-console-virtio.args b/tests/qemuxml2argvdata/qemuxml2argv-mach-virt-console-virtio.args
new file mode 100644
index 000000000..2a862bff1
--- /dev/null
+++ b/tests/qemuxml2argvdata/qemuxml2argv-mach-virt-console-virtio.args
@@ -0,0 +1,24 @@
+LC_ALL=C \
+PATH=/bin \
+HOME=/home/test \
+USER=test \
+LOGNAME=test \
+QEMU_AUDIO_DRV=none \
+/usr/bin/qemu-system-aarch64 \
+-name guest \
+-S \
+-M virt \
+-m 512 \
+-smp 1,sockets=1,cores=1,threads=1 \
+-uuid 1ccfd97d-5eb4-478a-bbe6-88d254c16db7 \
+-nographic \
+-nodefconfig \
+-nodefaults \
+-chardev socket,id=charmonitor,path=/tmp/lib/domain--1-guest/monitor.sock,\
+server,nowait \
+-mon chardev=charmonitor,id=monitor,mode=readline \
+-no-acpi \
+-boot c \
+-device virtio-serial,id=virtio-serial0 \
+-chardev pty,id=charconsole0 \
+-device virtconsole,chardev=charconsole0,id=console0
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-mach-virt-console-virtio.xml b/tests/qemuxml2argvdata/qemuxml2argv-mach-virt-console-virtio.xml
new file mode 100644
index 000000000..92704504c
--- /dev/null
+++ b/tests/qemuxml2argvdata/qemuxml2argv-mach-virt-console-virtio.xml
@@ -0,0 +1,19 @@
+<domain type='qemu'>
+  <name>guest</name>
+  <uuid>1ccfd97d-5eb4-478a-bbe6-88d254c16db7</uuid>
+  <memory unit='KiB'>524288</memory>
+  <vcpu placement='static'>1</vcpu>
+  <os>
+    <type arch='aarch64' machine='virt'>hvm</type>
+  </os>
+  <devices>
+    <emulator>/usr/bin/qemu-system-aarch64</emulator>
+    <controller type='usb' model='none'/>
+    <!-- The <console> element being present should *not* result in a
+         matching <serial> element being created -->
+    <console type='pty'>
+      <target type='virtio'/>
+    </console>
+    <memballoon model='none'/>
+  </devices>
+</domain>
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-mach-virt-serial+console-native.args b/tests/qemuxml2argvdata/qemuxml2argv-mach-virt-serial+console-native.args
new file mode 120000
index 000000000..1a90484d3
--- /dev/null
+++ b/tests/qemuxml2argvdata/qemuxml2argv-mach-virt-serial+console-native.args
@@ -0,0 +1 @@
+qemuxml2argv-mach-virt-serial-native.args
\ No newline at end of file
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-mach-virt-serial+console-native.xml b/tests/qemuxml2argvdata/qemuxml2argv-mach-virt-serial+console-native.xml
new file mode 100644
index 000000000..549b764e9
--- /dev/null
+++ b/tests/qemuxml2argvdata/qemuxml2argv-mach-virt-serial+console-native.xml
@@ -0,0 +1,18 @@
+<domain type='qemu'>
+  <name>guest</name>
+  <uuid>1ccfd97d-5eb4-478a-bbe6-88d254c16db7</uuid>
+  <memory unit='KiB'>524288</memory>
+  <vcpu placement='static'>1</vcpu>
+  <os>
+    <type arch='aarch64' machine='virt'>hvm</type>
+  </os>
+  <devices>
+    <emulator>/usr/bin/qemu-system-aarch64</emulator>
+    <controller type='usb' model='none'/>
+    <!-- When both the <serial> and <console> elements are present, they will
+         be matched and end up representing the same native serial console -->
+    <serial type='pty'/>
+    <console type='pty'/>
+    <memballoon model='none'/>
+  </devices>
+</domain>
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-mach-virt-serial-compat.args b/tests/qemuxml2argvdata/qemuxml2argv-mach-virt-serial-compat.args
new file mode 120000
index 000000000..1a90484d3
--- /dev/null
+++ b/tests/qemuxml2argvdata/qemuxml2argv-mach-virt-serial-compat.args
@@ -0,0 +1 @@
+qemuxml2argv-mach-virt-serial-native.args
\ No newline at end of file
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-mach-virt-serial-compat.xml b/tests/qemuxml2argvdata/qemuxml2argv-mach-virt-serial-compat.xml
new file mode 100644
index 000000000..9e6be3ffe
--- /dev/null
+++ b/tests/qemuxml2argvdata/qemuxml2argv-mach-virt-serial-compat.xml
@@ -0,0 +1,19 @@
+<domain type='qemu'>
+  <name>guest</name>
+  <uuid>1ccfd97d-5eb4-478a-bbe6-88d254c16db7</uuid>
+  <memory unit='KiB'>524288</memory>
+  <vcpu placement='static'>1</vcpu>
+  <os>
+    <type arch='aarch64' machine='virt'>hvm</type>
+  </os>
+  <devices>
+    <emulator>/usr/bin/qemu-system-aarch64</emulator>
+    <controller type='usb' model='none'/>
+    <!-- isa-serial has to be accepted for backwards compatibility reasons,
+         but should get converted to the proper type (pl011) -->
+    <serial type='pty'>
+      <target type='isa-serial'/>
+    </serial>
+    <memballoon model='none'/>
+  </devices>
+</domain>
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-mach-virt-serial-invalid-machine.xml b/tests/qemuxml2argvdata/qemuxml2argv-mach-virt-serial-invalid-machine.xml
new file mode 100644
index 000000000..a874a026b
--- /dev/null
+++ b/tests/qemuxml2argvdata/qemuxml2argv-mach-virt-serial-invalid-machine.xml
@@ -0,0 +1,19 @@
+<domain type='qemu'>
+  <name>guest</name>
+  <uuid>1ccfd97d-5eb4-478a-bbe6-88d254c16db7</uuid>
+  <memory unit='KiB'>524288</memory>
+  <vcpu placement='static'>1</vcpu>
+  <os>
+    <type arch='x86_64' machine='pc'>hvm</type>
+  </os>
+  <devices>
+    <emulator>/usr/bin/qemu-system-x86_64</emulator>
+    <controller type='usb' model='none'/>
+    <!-- The pl011 serial console can only be used for mach-virt guests,
+         so this should be rejected -->
+    <serial type='pty'>
+      <target type='pl011'/>
+    </serial>
+    <memballoon model='none'/>
+  </devices>
+</domain>
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-mach-virt-serial-native.args b/tests/qemuxml2argvdata/qemuxml2argv-mach-virt-serial-native.args
new file mode 100644
index 000000000..f4bfce376
--- /dev/null
+++ b/tests/qemuxml2argvdata/qemuxml2argv-mach-virt-serial-native.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-aarch64 \
+-name guest \
+-S \
+-M virt \
+-m 512 \
+-smp 1,sockets=1,cores=1,threads=1 \
+-uuid 1ccfd97d-5eb4-478a-bbe6-88d254c16db7 \
+-nographic \
+-nodefconfig \
+-nodefaults \
+-chardev socket,id=charmonitor,path=/tmp/lib/domain--1-guest/monitor.sock,\
+server,nowait \
+-mon chardev=charmonitor,id=monitor,mode=readline \
+-no-acpi \
+-boot c \
+-chardev pty,id=charserial0 \
+-serial chardev:charserial0
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-mach-virt-serial-native.xml b/tests/qemuxml2argvdata/qemuxml2argv-mach-virt-serial-native.xml
new file mode 100644
index 000000000..817f606ee
--- /dev/null
+++ b/tests/qemuxml2argvdata/qemuxml2argv-mach-virt-serial-native.xml
@@ -0,0 +1,16 @@
+<domain type='qemu'>
+  <name>guest</name>
+  <uuid>1ccfd97d-5eb4-478a-bbe6-88d254c16db7</uuid>
+  <memory unit='KiB'>524288</memory>
+  <vcpu placement='static'>1</vcpu>
+  <os>
+    <type arch='aarch64' machine='virt'>hvm</type>
+  </os>
+  <devices>
+    <emulator>/usr/bin/qemu-system-aarch64</emulator>
+    <controller type='usb' model='none'/>
+    <!-- This will use the pl011 target type -->
+    <serial type='pty'/>
+    <memballoon model='none'/>
+  </devices>
+</domain>
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-mach-virt-serial-pci.args b/tests/qemuxml2argvdata/qemuxml2argv-mach-virt-serial-pci.args
new file mode 100644
index 000000000..334194efe
--- /dev/null
+++ b/tests/qemuxml2argvdata/qemuxml2argv-mach-virt-serial-pci.args
@@ -0,0 +1,26 @@
+LC_ALL=C \
+PATH=/bin \
+HOME=/home/test \
+USER=test \
+LOGNAME=test \
+QEMU_AUDIO_DRV=none \
+/usr/bin/qemu-system-aarch64 \
+-name guest \
+-S \
+-M virt \
+-m 512 \
+-smp 1,sockets=1,cores=1,threads=1 \
+-uuid 1ccfd97d-5eb4-478a-bbe6-88d254c16db7 \
+-nographic \
+-nodefconfig \
+-nodefaults \
+-chardev socket,id=charmonitor,path=/tmp/lib/domain--1-guest/monitor.sock,\
+server,nowait \
+-mon chardev=charmonitor,id=monitor,mode=readline \
+-no-acpi \
+-boot c \
+-device i82801b11-bridge,id=pci.1,bus=pcie.0,addr=0x1 \
+-device pci-bridge,chassis_nr=2,id=pci.2,bus=pci.1,addr=0x0 \
+-device pcie-root-port,port=0x10,chassis=3,id=pci.3,bus=pcie.0,addr=0x2 \
+-chardev pty,id=charserial0 \
+-device pci-serial,chardev=charserial0,id=serial0,bus=pci.2,addr=0x1
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-mach-virt-serial-pci.xml b/tests/qemuxml2argvdata/qemuxml2argv-mach-virt-serial-pci.xml
new file mode 100644
index 000000000..29aa7664b
--- /dev/null
+++ b/tests/qemuxml2argvdata/qemuxml2argv-mach-virt-serial-pci.xml
@@ -0,0 +1,18 @@
+<domain type='qemu'>
+  <name>guest</name>
+  <uuid>1ccfd97d-5eb4-478a-bbe6-88d254c16db7</uuid>
+  <memory unit='KiB'>524288</memory>
+  <vcpu placement='static'>1</vcpu>
+  <os>
+    <type arch='aarch64' machine='virt'>hvm</type>
+  </os>
+  <devices>
+    <emulator>/usr/bin/qemu-system-aarch64</emulator>
+    <controller type='usb' model='none'/>
+    <!-- This will be assigned a PCI address -->
+    <serial type='pty'>
+      <target type='pci-serial'/>
+    </serial>
+    <memballoon model='none'/>
+  </devices>
+</domain>
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-mach-virt-serial-usb.args b/tests/qemuxml2argvdata/qemuxml2argv-mach-virt-serial-usb.args
new file mode 100644
index 000000000..44c4027ac
--- /dev/null
+++ b/tests/qemuxml2argvdata/qemuxml2argv-mach-virt-serial-usb.args
@@ -0,0 +1,27 @@
+LC_ALL=C \
+PATH=/bin \
+HOME=/home/test \
+USER=test \
+LOGNAME=test \
+QEMU_AUDIO_DRV=none \
+/usr/bin/qemu-system-aarch64 \
+-name guest \
+-S \
+-M virt \
+-m 512 \
+-smp 1,sockets=1,cores=1,threads=1 \
+-uuid 1ccfd97d-5eb4-478a-bbe6-88d254c16db7 \
+-nographic \
+-nodefconfig \
+-nodefaults \
+-chardev socket,id=charmonitor,path=/tmp/lib/domain--1-guest/monitor.sock,\
+server,nowait \
+-mon chardev=charmonitor,id=monitor,mode=readline \
+-no-acpi \
+-boot c \
+-device pcie-root-port,port=0x8,chassis=1,id=pci.1,bus=pcie.0,multifunction=on,\
+addr=0x1 \
+-device pcie-root-port,port=0x9,chassis=2,id=pci.2,bus=pcie.0,addr=0x1.0x1 \
+-device qemu-xhci,id=usb,bus=pci.1,addr=0x0 \
+-chardev pty,id=charserial0 \
+-device usb-serial,chardev=charserial0,id=serial0,bus=usb.0,port=1
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-mach-virt-serial-usb.xml b/tests/qemuxml2argvdata/qemuxml2argv-mach-virt-serial-usb.xml
new file mode 100644
index 000000000..35f192a3e
--- /dev/null
+++ b/tests/qemuxml2argvdata/qemuxml2argv-mach-virt-serial-usb.xml
@@ -0,0 +1,21 @@
+<domain type='qemu'>
+  <name>guest</name>
+  <uuid>1ccfd97d-5eb4-478a-bbe6-88d254c16db7</uuid>
+  <memory unit='KiB'>524288</memory>
+  <vcpu placement='static'>1</vcpu>
+  <os>
+    <type arch='aarch64' machine='virt'>hvm</type>
+  </os>
+  <devices>
+    <emulator>/usr/bin/qemu-system-aarch64</emulator>
+    <controller type='usb' model='qemu-xhci'/>
+    <!-- This should be assigned a USB address. You'll not be able to find it
+         in the file generated by qemuxml2xmltest due to limitations in the
+         test suite, but it will be there when actually running libvirt;
+         moreover, the USB address will be present in the .args file -->
+    <serial type='pty'>
+      <target type='usb-serial'/>
+    </serial>
+    <memballoon model='none'/>
+  </devices>
+</domain>
diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c
index 4dcfe4f63..24662cc09 100644
--- a/tests/qemuxml2argvtest.c
+++ b/tests/qemuxml2argvtest.c
@@ -1895,6 +1895,33 @@ mymain(void)
             QEMU_CAPS_NODEFCONFIG);
     DO_TEST_PARSE_ERROR("pseries-serial-invalid-machine", NONE);
 
+    DO_TEST("mach-virt-serial-native",
+            QEMU_CAPS_NODEFCONFIG);
+    DO_TEST("mach-virt-serial+console-native",
+            QEMU_CAPS_NODEFCONFIG);
+    DO_TEST("mach-virt-serial-compat",
+            QEMU_CAPS_NODEFCONFIG);
+    DO_TEST("mach-virt-serial-pci",
+            QEMU_CAPS_NODEFCONFIG,
+            QEMU_CAPS_OBJECT_GPEX,
+            QEMU_CAPS_PCI_MULTIFUNCTION,
+            QEMU_CAPS_DEVICE_PCIE_ROOT_PORT,
+            QEMU_CAPS_DEVICE_DMI_TO_PCI_BRIDGE,
+            QEMU_CAPS_DEVICE_PCI_BRIDGE,
+            QEMU_CAPS_DEVICE_PCI_SERIAL);
+    DO_TEST("mach-virt-serial-usb",
+            QEMU_CAPS_NODEFCONFIG,
+            QEMU_CAPS_OBJECT_GPEX,
+            QEMU_CAPS_PCI_MULTIFUNCTION,
+            QEMU_CAPS_DEVICE_PCIE_ROOT_PORT,
+            QEMU_CAPS_DEVICE_QEMU_XHCI,
+            QEMU_CAPS_DEVICE_USB_SERIAL);
+    DO_TEST("mach-virt-console-native",
+            QEMU_CAPS_NODEFCONFIG);
+    DO_TEST("mach-virt-console-virtio",
+            QEMU_CAPS_NODEFCONFIG);
+    DO_TEST_PARSE_ERROR("mach-virt-serial-invalid-machine", NONE);
+
     DO_TEST("disk-ide-drive-split",
             QEMU_CAPS_NODEFCONFIG,
             QEMU_CAPS_IDE_CD);
diff --git a/tests/qemuxml2xmloutdata/qemuxml2xmlout-aarch64-virtio-pci-default.xml b/tests/qemuxml2xmloutdata/qemuxml2xmlout-aarch64-virtio-pci-default.xml
index e5496424b..af192b1e5 100644
--- a/tests/qemuxml2xmloutdata/qemuxml2xmlout-aarch64-virtio-pci-default.xml
+++ b/tests/qemuxml2xmloutdata/qemuxml2xmlout-aarch64-virtio-pci-default.xml
@@ -71,7 +71,7 @@
       <address type='pci' domain='0x0000' bus='0x01' slot='0x00' function='0x0'/>
     </interface>
     <serial type='pty'>
-      <target port='0'/>
+      <target type='pl011' port='0'/>
     </serial>
     <console type='pty'>
       <target type='serial' port='0'/>
diff --git a/tests/qemuxml2xmloutdata/qemuxml2xmlout-mach-virt-console-native.xml b/tests/qemuxml2xmloutdata/qemuxml2xmlout-mach-virt-console-native.xml
new file mode 120000
index 000000000..a4768fcf8
--- /dev/null
+++ b/tests/qemuxml2xmloutdata/qemuxml2xmlout-mach-virt-console-native.xml
@@ -0,0 +1 @@
+qemuxml2xmlout-mach-virt-serial-compat.xml
\ No newline at end of file
diff --git a/tests/qemuxml2xmloutdata/qemuxml2xmlout-mach-virt-console-virtio.xml b/tests/qemuxml2xmloutdata/qemuxml2xmlout-mach-virt-console-virtio.xml
new file mode 100644
index 000000000..3e46cd201
--- /dev/null
+++ b/tests/qemuxml2xmloutdata/qemuxml2xmlout-mach-virt-console-virtio.xml
@@ -0,0 +1,27 @@
+<domain type='qemu'>
+  <name>guest</name>
+  <uuid>1ccfd97d-5eb4-478a-bbe6-88d254c16db7</uuid>
+  <memory unit='KiB'>524288</memory>
+  <currentMemory unit='KiB'>524288</currentMemory>
+  <vcpu placement='static'>1</vcpu>
+  <os>
+    <type arch='aarch64' machine='virt'>hvm</type>
+    <boot dev='hd'/>
+  </os>
+  <features>
+    <gic version='2'/>
+  </features>
+  <clock offset='utc'/>
+  <on_poweroff>destroy</on_poweroff>
+  <on_reboot>restart</on_reboot>
+  <on_crash>destroy</on_crash>
+  <devices>
+    <emulator>/usr/bin/qemu-system-aarch64</emulator>
+    <controller type='usb' index='0' model='none'/>
+    <controller type='virtio-serial' index='0'/>
+    <console type='pty'>
+      <target type='virtio' port='0'/>
+    </console>
+    <memballoon model='none'/>
+  </devices>
+</domain>
diff --git a/tests/qemuxml2xmloutdata/qemuxml2xmlout-mach-virt-serial+console-native.xml b/tests/qemuxml2xmloutdata/qemuxml2xmlout-mach-virt-serial+console-native.xml
new file mode 120000
index 000000000..a4768fcf8
--- /dev/null
+++ b/tests/qemuxml2xmloutdata/qemuxml2xmlout-mach-virt-serial+console-native.xml
@@ -0,0 +1 @@
+qemuxml2xmlout-mach-virt-serial-compat.xml
\ No newline at end of file
diff --git a/tests/qemuxml2xmloutdata/qemuxml2xmlout-mach-virt-serial-compat.xml b/tests/qemuxml2xmloutdata/qemuxml2xmlout-mach-virt-serial-compat.xml
new file mode 100644
index 000000000..b648858ee
--- /dev/null
+++ b/tests/qemuxml2xmloutdata/qemuxml2xmlout-mach-virt-serial-compat.xml
@@ -0,0 +1,29 @@
+<domain type='qemu'>
+  <name>guest</name>
+  <uuid>1ccfd97d-5eb4-478a-bbe6-88d254c16db7</uuid>
+  <memory unit='KiB'>524288</memory>
+  <currentMemory unit='KiB'>524288</currentMemory>
+  <vcpu placement='static'>1</vcpu>
+  <os>
+    <type arch='aarch64' machine='virt'>hvm</type>
+    <boot dev='hd'/>
+  </os>
+  <features>
+    <gic version='2'/>
+  </features>
+  <clock offset='utc'/>
+  <on_poweroff>destroy</on_poweroff>
+  <on_reboot>restart</on_reboot>
+  <on_crash>destroy</on_crash>
+  <devices>
+    <emulator>/usr/bin/qemu-system-aarch64</emulator>
+    <controller type='usb' index='0' model='none'/>
+    <serial type='pty'>
+      <target type='pl011' port='0'/>
+    </serial>
+    <console type='pty'>
+      <target type='serial' port='0'/>
+    </console>
+    <memballoon model='none'/>
+  </devices>
+</domain>
diff --git a/tests/qemuxml2xmloutdata/qemuxml2xmlout-mach-virt-serial-native.xml b/tests/qemuxml2xmloutdata/qemuxml2xmlout-mach-virt-serial-native.xml
new file mode 120000
index 000000000..a4768fcf8
--- /dev/null
+++ b/tests/qemuxml2xmloutdata/qemuxml2xmlout-mach-virt-serial-native.xml
@@ -0,0 +1 @@
+qemuxml2xmlout-mach-virt-serial-compat.xml
\ No newline at end of file
diff --git a/tests/qemuxml2xmloutdata/qemuxml2xmlout-mach-virt-serial-pci.xml b/tests/qemuxml2xmloutdata/qemuxml2xmlout-mach-virt-serial-pci.xml
new file mode 100644
index 000000000..955f593c9
--- /dev/null
+++ b/tests/qemuxml2xmloutdata/qemuxml2xmlout-mach-virt-serial-pci.xml
@@ -0,0 +1,42 @@
+<domain type='qemu'>
+  <name>guest</name>
+  <uuid>1ccfd97d-5eb4-478a-bbe6-88d254c16db7</uuid>
+  <memory unit='KiB'>524288</memory>
+  <currentMemory unit='KiB'>524288</currentMemory>
+  <vcpu placement='static'>1</vcpu>
+  <os>
+    <type arch='aarch64' machine='virt'>hvm</type>
+    <boot dev='hd'/>
+  </os>
+  <features>
+    <gic version='2'/>
+  </features>
+  <clock offset='utc'/>
+  <on_poweroff>destroy</on_poweroff>
+  <on_reboot>restart</on_reboot>
+  <on_crash>destroy</on_crash>
+  <devices>
+    <emulator>/usr/bin/qemu-system-aarch64</emulator>
+    <controller type='usb' index='0' model='none'/>
+    <controller type='pci' index='0' model='pcie-root'/>
+    <controller type='pci' index='1' model='dmi-to-pci-bridge'>
+      <model name='i82801b11-bridge'/>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x0'/>
+    </controller>
+    <controller type='pci' index='2' model='pci-bridge'>
+      <model name='pci-bridge'/>
+      <target chassisNr='2'/>
+      <address type='pci' domain='0x0000' bus='0x01' slot='0x00' function='0x0'/>
+    </controller>
+    <controller type='pci' index='3' model='pcie-root-port'>
+      <model name='pcie-root-port'/>
+      <target chassis='3' port='0x10'/>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
+    </controller>
+    <serial type='pty'>
+      <target type='pci-serial' port='0'/>
+      <address type='pci' domain='0x0000' bus='0x02' slot='0x01' function='0x0'/>
+    </serial>
+    <memballoon model='none'/>
+  </devices>
+</domain>
diff --git a/tests/qemuxml2xmloutdata/qemuxml2xmlout-mach-virt-serial-usb.xml b/tests/qemuxml2xmloutdata/qemuxml2xmlout-mach-virt-serial-usb.xml
new file mode 100644
index 000000000..8829e7b6f
--- /dev/null
+++ b/tests/qemuxml2xmloutdata/qemuxml2xmlout-mach-virt-serial-usb.xml
@@ -0,0 +1,39 @@
+<domain type='qemu'>
+  <name>guest</name>
+  <uuid>1ccfd97d-5eb4-478a-bbe6-88d254c16db7</uuid>
+  <memory unit='KiB'>524288</memory>
+  <currentMemory unit='KiB'>524288</currentMemory>
+  <vcpu placement='static'>1</vcpu>
+  <os>
+    <type arch='aarch64' machine='virt'>hvm</type>
+    <boot dev='hd'/>
+  </os>
+  <features>
+    <gic version='2'/>
+  </features>
+  <clock offset='utc'/>
+  <on_poweroff>destroy</on_poweroff>
+  <on_reboot>restart</on_reboot>
+  <on_crash>destroy</on_crash>
+  <devices>
+    <emulator>/usr/bin/qemu-system-aarch64</emulator>
+    <controller type='usb' index='0' model='qemu-xhci'>
+      <address type='pci' domain='0x0000' bus='0x01' slot='0x00' function='0x0'/>
+    </controller>
+    <controller type='pci' index='0' model='pcie-root'/>
+    <controller type='pci' index='1' model='pcie-root-port'>
+      <model name='pcie-root-port'/>
+      <target chassis='1' port='0x8'/>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x0' multifunction='on'/>
+    </controller>
+    <controller type='pci' index='2' model='pcie-root-port'>
+      <model name='pcie-root-port'/>
+      <target chassis='2' port='0x9'/>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
+    </controller>
+    <serial type='pty'>
+      <target type='usb-serial' port='0'/>
+    </serial>
+    <memballoon model='none'/>
+  </devices>
+</domain>
diff --git a/tests/qemuxml2xmltest.c b/tests/qemuxml2xmltest.c
index f590fa937..9fb09316b 100644
--- a/tests/qemuxml2xmltest.c
+++ b/tests/qemuxml2xmltest.c
@@ -788,6 +788,32 @@ mymain(void)
     DO_TEST("pseries-console-virtio",
             QEMU_CAPS_NODEFCONFIG);
 
+    DO_TEST("mach-virt-serial-native",
+            QEMU_CAPS_NODEFCONFIG);
+    DO_TEST("mach-virt-serial+console-native",
+            QEMU_CAPS_NODEFCONFIG);
+    DO_TEST("mach-virt-serial-compat",
+            QEMU_CAPS_NODEFCONFIG);
+    DO_TEST("mach-virt-serial-pci",
+            QEMU_CAPS_NODEFCONFIG,
+            QEMU_CAPS_OBJECT_GPEX,
+            QEMU_CAPS_PCI_MULTIFUNCTION,
+            QEMU_CAPS_DEVICE_PCIE_ROOT_PORT,
+            QEMU_CAPS_DEVICE_DMI_TO_PCI_BRIDGE,
+            QEMU_CAPS_DEVICE_PCI_BRIDGE,
+            QEMU_CAPS_DEVICE_PCI_SERIAL);
+    DO_TEST("mach-virt-serial-usb",
+            QEMU_CAPS_NODEFCONFIG,
+            QEMU_CAPS_OBJECT_GPEX,
+            QEMU_CAPS_PCI_MULTIFUNCTION,
+            QEMU_CAPS_DEVICE_PCIE_ROOT_PORT,
+            QEMU_CAPS_DEVICE_QEMU_XHCI,
+            QEMU_CAPS_DEVICE_USB_SERIAL);
+    DO_TEST("mach-virt-console-native",
+            QEMU_CAPS_NODEFCONFIG);
+    DO_TEST("mach-virt-console-virtio",
+            QEMU_CAPS_NODEFCONFIG);
+
     DO_TEST("balloon-device-auto", NONE);
     DO_TEST("balloon-device-period", NONE);
     DO_TEST("channel-virtio-auto", NONE);
-- 
2.13.6

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Re: [libvirt] [PATCH 09/14] conf: Add VIR_DOMAIN_CHR_SERIAL_TARGET_TYPE_PL011
Posted by Pavel Hrdina 7 years, 5 months ago
On Wed, Nov 15, 2017 at 12:50:12PM +0100, Andrea Bolognani wrote:
> We can finally introduce a specific target type for the pl011 device
> used by mach-virt guests, which means isa-serial will no longer show
> up to confuse users.
> 
> We make sure migration works in both directions by interpreting the
> isa-serial target type, or the lack of target type, appropriately
> when parsing the guest XML, and skipping the newly-introduced type
> when formatting if for migration. We also verify that pl011 is not
> used for non-mach-virt guests and add a bunch of test cases.

Here the name "pl011" is even worse than "spapr-vty".  It's a device
name and there is also "pl022" (probably not supported by QEMU).  The
bus name is APB (Advanced Peripheral Bus). [1] [2]

How about we introduce another attribute/element that would specify the
exact model of the serial device and it would be optional, libvirt would
be able to choose the model if none is specified.

I was no able to find anything about s390 and its sclp/sclplm consoles
but it's the same case.  I would expect that both devices are connected
to the same BUS, we just need to find the BUS name to use it $BUS-serial
and have sclp/sclplm as models.

Other than the naming the patch looks good.

Pavel

[1] <http://infocenter.arm.com/help/topic/com.arm.doc.ddi0183f/DDI0183.pdf>
[2] <http://infocenter.arm.com/help/topic/com.arm.doc.ddi0194g/DDI0194G_ssp_pl022_r1p3_trm.pdf>
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Re: [libvirt] [PATCH 09/14] conf: Add VIR_DOMAIN_CHR_SERIAL_TARGET_TYPE_PL011
Posted by Andrea Bolognani 7 years, 5 months ago
On Thu, 2017-11-16 at 14:56 +0100, Pavel Hrdina wrote:
> Here the name "pl011" is even worse than "spapr-vty".  It's a device
> name and there is also "pl022" (probably not supported by QEMU).  The
> bus name is APB (Advanced Peripheral Bus). [1] [2]

QEMU has pl031 and pl061 devices in addition to pl011, but no pl022
as far as I can tell.

> How about we introduce another attribute/element that would specify the
> exact model of the serial device and it would be optional, libvirt would
> be able to choose the model if none is specified.

That would have precedents in eg. PCI controllers, where the <model>
subelement contains the hypervisor-specific device name whereas
the 'model' attribute of the <controller> element contains a more
generic name...

You might have just convinced me :)

Of course that would lead to duplicated information in the existing
cases of ISA, USB and PCI, but I guess we can live with that.

> I was no able to find anything about s390 and its sclp/sclplm consoles
> but it's the same case.  I would expect that both devices are connected
> to the same BUS, we just need to find the BUS name to use it $BUS-serial
> and have sclp/sclplm as models.

Pino, any ideas about this?

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Re: [libvirt] [PATCH 09/14] conf: Add VIR_DOMAIN_CHR_SERIAL_TARGET_TYPE_PL011
Posted by Pavel Hrdina 7 years, 5 months ago
On Thu, Nov 16, 2017 at 03:53:42PM +0100, Andrea Bolognani wrote:
> On Thu, 2017-11-16 at 14:56 +0100, Pavel Hrdina wrote:
> > Here the name "pl011" is even worse than "spapr-vty".  It's a device
> > name and there is also "pl022" (probably not supported by QEMU).  The
> > bus name is APB (Advanced Peripheral Bus). [1] [2]
> 
> QEMU has pl031 and pl061 devices in addition to pl011, but no pl022
> as far as I can tell.
> 
> > How about we introduce another attribute/element that would specify the
> > exact model of the serial device and it would be optional, libvirt would
> > be able to choose the model if none is specified.
> 
> That would have precedents in eg. PCI controllers, where the <model>
> subelement contains the hypervisor-specific device name whereas
> the 'model' attribute of the <controller> element contains a more
> generic name...
> 
> You might have just convinced me :)

good :)

> Of course that would lead to duplicated information in the existing
> cases of ISA, USB and PCI, but I guess we can live with that.

Or the duplication can be solved by documenting, that the model is valid
only for specific types where the model makes sense.

> > I was no able to find anything about s390 and its sclp/sclplm consoles
> > but it's the same case.  I would expect that both devices are connected
> > to the same BUS, we just need to find the BUS name to use it $BUS-serial
> > and have sclp/sclplm as models.
> 
> Pino, any ideas about this?
> 
> -- 
> Andrea Bolognani / Red Hat / Virtualization
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Re: [libvirt] [PATCH 09/14] conf: Add VIR_DOMAIN_CHR_SERIAL_TARGET_TYPE_PL011
Posted by Pino Toscano 7 years, 5 months ago
On Thursday, 16 November 2017 14:56:32 CET Pavel Hrdina wrote:
> How about we introduce another attribute/element that would specify the
> exact model of the serial device and it would be optional, libvirt would
> be able to choose the model if none is specified.

Can you please provide an example of how it would look like?

> I was no able to find anything about s390 and its sclp/sclplm consoles
> but it's the same case.  I would expect that both devices are connected
> to the same BUS, we just need to find the BUS name to use it $BUS-serial
> and have sclp/sclplm as models.

There is no real bus for sclp/sclplm -- there is only an internal "bus"
in QEMU, but it should not be exposed in upper layers (as it is only an
implementation detail).

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Re: [libvirt] [PATCH 09/14] conf: Add VIR_DOMAIN_CHR_SERIAL_TARGET_TYPE_PL011
Posted by Andrea Bolognani 7 years, 5 months ago
On Thu, 2017-11-16 at 16:17 +0100, Pino Toscano wrote:
> On Thursday, 16 November 2017 14:56:32 CET Pavel Hrdina wrote:
> > How about we introduce another attribute/element that would specify the
> > exact model of the serial device and it would be optional, libvirt would
> > be able to choose the model if none is specified.
> 
> Can you please provide an example of how it would look like?

  <serial type='pty'>
    <target type='xxx-serial>
      <model name='splc'/>
    </target>
  </serial>

> > I was no able to find anything about s390 and its sclp/sclplm consoles
> > but it's the same case.  I would expect that both devices are connected
> > to the same BUS, we just need to find the BUS name to use it $BUS-serial
> > and have sclp/sclplm as models.
> 
> There is no real bus for sclp/sclplm -- there is only an internal "bus"
> in QEMU, but it should not be exposed in upper layers (as it is only an
> implementation detail).

There's probably some name, in some spec, somewhere :)

Or we could use 's390-serial', but that would be suboptimal.

-- 
Andrea Bolognani / Red Hat / Virtualization

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Re: [libvirt] [PATCH 09/14] conf: Add VIR_DOMAIN_CHR_SERIAL_TARGET_TYPE_PL011
Posted by Pino Toscano 7 years, 5 months ago
On Thursday, 16 November 2017 16:44:24 CET Andrea Bolognani wrote:
> On Thu, 2017-11-16 at 16:17 +0100, Pino Toscano wrote:
> > On Thursday, 16 November 2017 14:56:32 CET Pavel Hrdina wrote:
> > > How about we introduce another attribute/element that would specify the
> > > exact model of the serial device and it would be optional, libvirt would
> > > be able to choose the model if none is specified.
> > 
> > Can you please provide an example of how it would look like?
> 
>   <serial type='pty'>
>     <target type='xxx-serial>
>       <model name='splc'/>
>     </target>
>   </serial>

IMHO that looks a bit more convoluted than necessary.

> > > I was no able to find anything about s390 and its sclp/sclplm consoles
> > > but it's the same case.  I would expect that both devices are connected
> > > to the same BUS, we just need to find the BUS name to use it $BUS-serial
> > > and have sclp/sclplm as models.
> > 
> > There is no real bus for sclp/sclplm -- there is only an internal "bus"
> > in QEMU, but it should not be exposed in upper layers (as it is only an
> > implementation detail).
> 
> There's probably some name, in some spec, somewhere :)

Nope.

> Or we could use 's390-serial', but that would be suboptimal.

That is way too generic, and representing something which does not
exist (unlike the current -serial ones).

I still do not see the advantage of this, though.

-- 
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Re: [libvirt] [PATCH 09/14] conf: Add VIR_DOMAIN_CHR_SERIAL_TARGET_TYPE_PL011
Posted by Pavel Hrdina 7 years, 5 months ago
On Thu, Nov 16, 2017 at 04:44:24PM +0100, Andrea Bolognani wrote:
> On Thu, 2017-11-16 at 16:17 +0100, Pino Toscano wrote:
> > On Thursday, 16 November 2017 14:56:32 CET Pavel Hrdina wrote:
> > > How about we introduce another attribute/element that would specify the
> > > exact model of the serial device and it would be optional, libvirt would
> > > be able to choose the model if none is specified.
> > 
> > Can you please provide an example of how it would look like?
> 
>   <serial type='pty'>
>     <target type='xxx-serial>
>       <model name='splc'/>
>     </target>
>   </serial>

I've done some more digging and the SCLP probably stands for
"Service-Call Logical Processor" so we could probably use it as
"sclp-serial" and there would be two models "sclpconsole" and
"sclplmconsole".

> 
> > > I was no able to find anything about s390 and its sclp/sclplm consoles
> > > but it's the same case.  I would expect that both devices are connected
> > > to the same BUS, we just need to find the BUS name to use it $BUS-serial
> > > and have sclp/sclplm as models.
> > 
> > There is no real bus for sclp/sclplm -- there is only an internal "bus"
> > in QEMU, but it should not be exposed in upper layers (as it is only an
> > implementation detail).
> 
> There's probably some name, in some spec, somewhere :)
> 
> Or we could use 's390-serial', but that would be suboptimal.
> 
> -- 
> Andrea Bolognani / Red Hat / Virtualization
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