[v3,08/17] qemu: Support rng model=virtio-{non-}transitional

Message ID 85eeb4f8a82fc72a9c797e88040847e84f78174e.1549663397.git.crobinso@redhat.com
State Accepted
Commit e063707556f53bc22e5c215acb71aba9f265bfa2
Headers show
Series
  • qemu: virtio-{non-}transitional support
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Commit Message

Cole Robinson Feb. 8, 2019, 10:11 p.m.
Add new <rng> model values for virtio transitional devices. Ex:

  <rng model='virtio-transitional'>
    ...
  </rng>

* "virtio-transitional" maps to qemu "virtio-rng-pci-transitional"
* "virtio-non-transitional" maps to qemu "virtio-rng-pci-non-transitional"

Signed-off-by: Cole Robinson <crobinso@redhat.com>

---
 docs/formatdomain.html.in                                | 4 ++++
 docs/schemas/domaincommon.rng                            | 6 +++++-
 src/conf/domain_conf.c                                   | 5 ++++-
 src/conf/domain_conf.h                                   | 2 ++
 src/qemu/qemu_command.c                                  | 6 +++++-
 src/qemu/qemu_domain.c                                   | 5 +++++
 src/qemu/qemu_domain_address.c                           | 4 ++++
 .../virtio-non-transitional.x86_64-3.1.0.args            | 4 ++++
 .../virtio-non-transitional.x86_64-latest.args           | 3 +++
 tests/qemuxml2argvdata/virtio-non-transitional.xml       | 3 +++
 .../virtio-transitional.x86_64-3.1.0.args                | 3 +++
 .../virtio-transitional.x86_64-latest.args               | 2 ++
 tests/qemuxml2argvdata/virtio-transitional.xml           | 3 +++
 tests/qemuxml2xmloutdata/virtio-non-transitional.xml     | 9 +++++++++
 tests/qemuxml2xmloutdata/virtio-transitional.xml         | 4 ++++
 15 files changed, 60 insertions(+), 3 deletions(-)

-- 
2.20.1

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Comments

Andrea Bolognani Feb. 12, 2019, 3:40 p.m. | #1
On Fri, 2019-02-08 at 17:11 -0500, Cole Robinson wrote:
[...]
> @@ -4553,6 +4553,11 @@ qemuDomainRNGDefValidate(const virDomainRNGDef *def,

>          modelIsSupported = virQEMUCapsGet(qemuCaps,

>                                            QEMU_CAPS_DEVICE_VIRTIO_RNG);

>          break;

> +    case VIR_DOMAIN_RNG_MODEL_VIRTIO_TRANSITIONAL:

> +    case VIR_DOMAIN_RNG_MODEL_VIRTIO_NON_TRANSITIONAL:

> +        modelIsSupported = (virQEMUCapsGet(qemuCaps, QEMU_CAPS_VIRTIO_PCI_NON_TRANSITIONAL) ||

> +                            virQEMUCapsGet(qemuCaps, QEMU_CAPS_VIRTIO_PCI_DISABLE_LEGACY));

> +        break;


You still need to make sure QEMU_CAPS_DEVICE_VIRTIO_RNG is present
when the model is virtio-(non-)transitional.

[...]
> @@ -884,7 +884,11 @@ qemuDomainDeviceCalculatePCIConnectFlags(virDomainDeviceDefPtr dev,

>      case VIR_DOMAIN_DEVICE_RNG:

>          switch ((virDomainRNGModel) dev->data.rng->model) {

>          case VIR_DOMAIN_RNG_MODEL_VIRTIO:

> +        case VIR_DOMAIN_RNG_MODEL_VIRTIO_NON_TRANSITIONAL:

>              return virtioFlags;

> +        case VIR_DOMAIN_RNG_MODEL_VIRTIO_TRANSITIONAL:

> +            /* Transitional devices only work in conventional PCI slots */

> +            return pciFlags;


Nit, but for other devices so far you've put the _TRANSITIONAL
case first, so please do the same here :)


With all of the above addressed,

  Reviewed-by: Andrea Bolognani <abologna@redhat.com>


-- 
Andrea Bolognani / Red Hat / Virtualization

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Patch

diff --git a/docs/formatdomain.html.in b/docs/formatdomain.html.in
index b7cea098bd..674616f7b4 100644
--- a/docs/formatdomain.html.in
+++ b/docs/formatdomain.html.in
@@ -8012,7 +8012,11 @@  qemu-kvm -net nic,model=? /dev/null
         </p>
         <ul>
           <li>'virtio' - supported by qemu and virtio-rng kernel module</li>
+          <li>'virtio-transitional' <span class='since'>Since 5.1.0</span></li>
+          <li>'virtio-non-transitional' <span class='since'>Since 5.1.0</span></li>
         </ul>
+        See <a href="#elementsVirtioTransitional">Virtio transitional devices</a>
+        for more details.
       </dd>
       <dt><code>rate</code></dt>
       <dd>
diff --git a/docs/schemas/domaincommon.rng b/docs/schemas/domaincommon.rng
index 36531a1c24..e91eb1395e 100644
--- a/docs/schemas/domaincommon.rng
+++ b/docs/schemas/domaincommon.rng
@@ -5455,7 +5455,11 @@ 
   <define name="rng">
     <element name="rng">
       <attribute name="model">
-        <value>virtio</value>
+        <choice>
+          <value>virtio</value>
+          <value>virtio-transitional</value>
+          <value>virtio-non-transitional</value>
+        </choice>
       </attribute>
       <interleave>
         <ref name="rng-backend"/>
diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 9f58418c89..eab70ba807 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -947,7 +947,10 @@  VIR_ENUM_IMPL(virDomainDiskTray, VIR_DOMAIN_DISK_TRAY_LAST,
 
 VIR_ENUM_IMPL(virDomainRNGModel,
               VIR_DOMAIN_RNG_MODEL_LAST,
-              "virtio");
+              "virtio",
+              "virtio-transitional",
+              "virtio-non-transitional",
+);
 
 VIR_ENUM_IMPL(virDomainRNGBackend,
               VIR_DOMAIN_RNG_BACKEND_LAST,
diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index dccdc42ed2..2a209a04c2 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -2127,6 +2127,8 @@  struct _virBlkioDevice {
 
 typedef enum {
     VIR_DOMAIN_RNG_MODEL_VIRTIO,
+    VIR_DOMAIN_RNG_MODEL_VIRTIO_TRANSITIONAL,
+    VIR_DOMAIN_RNG_MODEL_VIRTIO_NON_TRANSITIONAL,
 
     VIR_DOMAIN_RNG_MODEL_LAST
 } virDomainRNGModel;
diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index 15857f484a..3ef26bb494 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -492,6 +492,11 @@  qemuBuildVirtioDevStr(virBufferPtr buf,
             has_ntmodel = device.data.hostdev->source.subsys.u.scsi_host.model == VIR_DOMAIN_HOSTDEV_SUBSYS_SCSI_VHOST_MODEL_TYPE_VIRTIO_NON_TRANSITIONAL;
             break;
 
+        case VIR_DOMAIN_DEVICE_RNG:
+            has_tmodel = device.data.rng->model == VIR_DOMAIN_RNG_MODEL_VIRTIO_TRANSITIONAL;
+            has_ntmodel = device.data.rng->model == VIR_DOMAIN_RNG_MODEL_VIRTIO_NON_TRANSITIONAL;
+            break;
+
         case VIR_DOMAIN_DEVICE_LEASE:
         case VIR_DOMAIN_DEVICE_FS:
         case VIR_DOMAIN_DEVICE_INPUT:
@@ -510,7 +515,6 @@  qemuBuildVirtioDevStr(virBufferPtr buf,
         case VIR_DOMAIN_DEVICE_SHMEM:
         case VIR_DOMAIN_DEVICE_TPM:
         case VIR_DOMAIN_DEVICE_PANIC:
-        case VIR_DOMAIN_DEVICE_RNG:
         case VIR_DOMAIN_DEVICE_MEMORY:
         case VIR_DOMAIN_DEVICE_IOMMU:
         case VIR_DOMAIN_DEVICE_VSOCK:
diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
index 801d25a44b..4e9c179db3 100644
--- a/src/qemu/qemu_domain.c
+++ b/src/qemu/qemu_domain.c
@@ -4553,6 +4553,11 @@  qemuDomainRNGDefValidate(const virDomainRNGDef *def,
         modelIsSupported = virQEMUCapsGet(qemuCaps,
                                           QEMU_CAPS_DEVICE_VIRTIO_RNG);
         break;
+    case VIR_DOMAIN_RNG_MODEL_VIRTIO_TRANSITIONAL:
+    case VIR_DOMAIN_RNG_MODEL_VIRTIO_NON_TRANSITIONAL:
+        modelIsSupported = (virQEMUCapsGet(qemuCaps, QEMU_CAPS_VIRTIO_PCI_NON_TRANSITIONAL) ||
+                            virQEMUCapsGet(qemuCaps, QEMU_CAPS_VIRTIO_PCI_DISABLE_LEGACY));
+        break;
     case VIR_DOMAIN_RNG_MODEL_LAST:
         break;
     }
diff --git a/src/qemu/qemu_domain_address.c b/src/qemu/qemu_domain_address.c
index 283c3246b1..bc8829943f 100644
--- a/src/qemu/qemu_domain_address.c
+++ b/src/qemu/qemu_domain_address.c
@@ -884,7 +884,11 @@  qemuDomainDeviceCalculatePCIConnectFlags(virDomainDeviceDefPtr dev,
     case VIR_DOMAIN_DEVICE_RNG:
         switch ((virDomainRNGModel) dev->data.rng->model) {
         case VIR_DOMAIN_RNG_MODEL_VIRTIO:
+        case VIR_DOMAIN_RNG_MODEL_VIRTIO_NON_TRANSITIONAL:
             return virtioFlags;
+        case VIR_DOMAIN_RNG_MODEL_VIRTIO_TRANSITIONAL:
+            /* Transitional devices only work in conventional PCI slots */
+            return pciFlags;
 
         case VIR_DOMAIN_RNG_MODEL_LAST:
             return 0;
diff --git a/tests/qemuxml2argvdata/virtio-non-transitional.x86_64-3.1.0.args b/tests/qemuxml2argvdata/virtio-non-transitional.x86_64-3.1.0.args
index 500c03bdc3..10cc6236cb 100644
--- a/tests/qemuxml2argvdata/virtio-non-transitional.x86_64-3.1.0.args
+++ b/tests/qemuxml2argvdata/virtio-non-transitional.x86_64-3.1.0.args
@@ -28,6 +28,7 @@  addr=0x1 \
 -device pcie-root-port,port=0x9,chassis=2,id=pci.2,bus=pcie.0,addr=0x1.0x1 \
 -device pcie-root-port,port=0xa,chassis=3,id=pci.3,bus=pcie.0,addr=0x1.0x2 \
 -device pcie-root-port,port=0xb,chassis=4,id=pci.4,bus=pcie.0,addr=0x1.0x3 \
+-device pcie-root-port,port=0xc,chassis=5,id=pci.5,bus=pcie.0,addr=0x1.0x4 \
 -drive file=/dev/HostVG/QEMUGuest1,format=raw,if=none,id=drive-virtio-disk0 \
 -device virtio-blk-pci,disable-legacy=on,disable-modern=off,scsi=off,bus=pci.2,\
 addr=0x0,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1 \
@@ -36,6 +37,9 @@  addr=0x0,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1 \
 id=net0,mac=00:11:22:33:44:55,bus=pci.1,addr=0x0 \
 -device vhost-scsi-pci,disable-legacy=on,disable-modern=off,\
 wwpn=naa.5123456789abcde0,vhostfd=3,id=hostdev0,bus=pci.3,addr=0x0 \
+-object rng-random,id=objrng0,filename=/dev/urandom \
+-device virtio-rng-pci,disable-legacy=on,disable-modern=off,rng=objrng0,\
+id=rng0,bus=pci.4,addr=0x0 \
 -sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,\
 resourcecontrol=deny \
 -msg timestamp=on
diff --git a/tests/qemuxml2argvdata/virtio-non-transitional.x86_64-latest.args b/tests/qemuxml2argvdata/virtio-non-transitional.x86_64-latest.args
index c8dbffda65..a0fc475c2f 100644
--- a/tests/qemuxml2argvdata/virtio-non-transitional.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/virtio-non-transitional.x86_64-latest.args
@@ -28,6 +28,7 @@  addr=0x1 \
 -device pcie-root-port,port=0x9,chassis=2,id=pci.2,bus=pcie.0,addr=0x1.0x1 \
 -device pcie-root-port,port=0xa,chassis=3,id=pci.3,bus=pcie.0,addr=0x1.0x2 \
 -device pcie-root-port,port=0xb,chassis=4,id=pci.4,bus=pcie.0,addr=0x1.0x3 \
+-device pcie-root-port,port=0xc,chassis=5,id=pci.5,bus=pcie.0,addr=0x1.0x4 \
 -drive file=/dev/HostVG/QEMUGuest1,format=raw,if=none,id=drive-virtio-disk0 \
 -device virtio-blk-pci-non-transitional,scsi=off,bus=pci.2,addr=0x0,\
 drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1 \
@@ -36,6 +37,8 @@  drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1 \
 mac=00:11:22:33:44:55,bus=pci.1,addr=0x0 \
 -device vhost-scsi-pci-non-transitional,wwpn=naa.5123456789abcde0,vhostfd=3,\
 id=hostdev0,bus=pci.3,addr=0x0 \
+-object rng-random,id=objrng0,filename=/dev/urandom \
+-device virtio-rng-pci-non-transitional,rng=objrng0,id=rng0,bus=pci.4,addr=0x0 \
 -sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,\
 resourcecontrol=deny \
 -msg timestamp=on
diff --git a/tests/qemuxml2argvdata/virtio-non-transitional.xml b/tests/qemuxml2argvdata/virtio-non-transitional.xml
index 4cbf4b0893..d49d82691f 100644
--- a/tests/qemuxml2argvdata/virtio-non-transitional.xml
+++ b/tests/qemuxml2argvdata/virtio-non-transitional.xml
@@ -18,6 +18,9 @@ 
     <hostdev mode='subsystem' type='scsi_host' managed='no' model='virtio-non-transitional'>
       <source protocol='vhost' wwpn='naa.5123456789abcde0'/>
     </hostdev>
+    <rng model='virtio-non-transitional'>
+      <backend model='random'>/dev/urandom</backend>
+    </rng>
     <controller type='usb' index='0' model='none'/>
     <memballoon model='none'/>
   </devices>
diff --git a/tests/qemuxml2argvdata/virtio-transitional.x86_64-3.1.0.args b/tests/qemuxml2argvdata/virtio-transitional.x86_64-3.1.0.args
index d4d2b8ec35..b21a6cadd4 100644
--- a/tests/qemuxml2argvdata/virtio-transitional.x86_64-3.1.0.args
+++ b/tests/qemuxml2argvdata/virtio-transitional.x86_64-3.1.0.args
@@ -35,6 +35,9 @@  bus=pci.2,addr=0x2,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1 \
 id=net0,mac=00:11:22:33:44:55,bus=pci.2,addr=0x1 \
 -device vhost-scsi-pci,disable-legacy=off,disable-modern=off,\
 wwpn=naa.5123456789abcde0,vhostfd=3,id=hostdev0,bus=pci.2,addr=0x3 \
+-object rng-random,id=objrng0,filename=/dev/urandom \
+-device virtio-rng-pci,disable-legacy=off,disable-modern=off,rng=objrng0,\
+id=rng0,bus=pci.2,addr=0x4 \
 -sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,\
 resourcecontrol=deny \
 -msg timestamp=on
diff --git a/tests/qemuxml2argvdata/virtio-transitional.x86_64-latest.args b/tests/qemuxml2argvdata/virtio-transitional.x86_64-latest.args
index ab2c35514d..64fb4153fd 100644
--- a/tests/qemuxml2argvdata/virtio-transitional.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/virtio-transitional.x86_64-latest.args
@@ -35,6 +35,8 @@  drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1 \
 mac=00:11:22:33:44:55,bus=pci.2,addr=0x1 \
 -device vhost-scsi-pci-transitional,wwpn=naa.5123456789abcde0,vhostfd=3,\
 id=hostdev0,bus=pci.2,addr=0x3 \
+-object rng-random,id=objrng0,filename=/dev/urandom \
+-device virtio-rng-pci-transitional,rng=objrng0,id=rng0,bus=pci.2,addr=0x4 \
 -sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,\
 resourcecontrol=deny \
 -msg timestamp=on
diff --git a/tests/qemuxml2argvdata/virtio-transitional.xml b/tests/qemuxml2argvdata/virtio-transitional.xml
index 591ea47952..9643788a9a 100644
--- a/tests/qemuxml2argvdata/virtio-transitional.xml
+++ b/tests/qemuxml2argvdata/virtio-transitional.xml
@@ -18,6 +18,9 @@ 
     <hostdev mode='subsystem' type='scsi_host' managed='no' model='virtio-transitional'>
       <source protocol='vhost' wwpn='naa.5123456789abcde0'/>
     </hostdev>
+    <rng model='virtio-transitional'>
+      <backend model='random'>/dev/urandom</backend>
+    </rng>
     <controller type='usb' index='0' model='none'/>
     <memballoon model='none'/>
   </devices>
diff --git a/tests/qemuxml2xmloutdata/virtio-non-transitional.xml b/tests/qemuxml2xmloutdata/virtio-non-transitional.xml
index 2af5195dfd..4a315050ab 100644
--- a/tests/qemuxml2xmloutdata/virtio-non-transitional.xml
+++ b/tests/qemuxml2xmloutdata/virtio-non-transitional.xml
@@ -45,6 +45,11 @@ 
       <target chassis='4' port='0xb'/>
       <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x3'/>
     </controller>
+    <controller type='pci' index='5' model='pcie-root-port'>
+      <model name='pcie-root-port'/>
+      <target chassis='5' port='0xc'/>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x4'/>
+    </controller>
     <interface type='user'>
       <mac address='00:11:22:33:44:55'/>
       <model type='virtio-non-transitional'/>
@@ -57,5 +62,9 @@ 
       <address type='pci' domain='0x0000' bus='0x03' slot='0x00' function='0x0'/>
     </hostdev>
     <memballoon model='none'/>
+    <rng model='virtio-non-transitional'>
+      <backend model='random'>/dev/urandom</backend>
+      <address type='pci' domain='0x0000' bus='0x04' slot='0x00' function='0x0'/>
+    </rng>
   </devices>
 </domain>
diff --git a/tests/qemuxml2xmloutdata/virtio-transitional.xml b/tests/qemuxml2xmloutdata/virtio-transitional.xml
index 8c1baced0e..ae3789ad93 100644
--- a/tests/qemuxml2xmloutdata/virtio-transitional.xml
+++ b/tests/qemuxml2xmloutdata/virtio-transitional.xml
@@ -51,5 +51,9 @@ 
       <address type='pci' domain='0x0000' bus='0x02' slot='0x03' function='0x0'/>
     </hostdev>
     <memballoon model='none'/>
+    <rng model='virtio-transitional'>
+      <backend model='random'>/dev/urandom</backend>
+      <address type='pci' domain='0x0000' bus='0x02' slot='0x04' function='0x0'/>
+    </rng>
   </devices>
 </domain>