qemu: Add I/O thread support info into domain capabilities

Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
2025-03-20 07:59:00 +00:00 · 2017-10-19 14:19:38 +02:00 · 2017-10-19 14:19:38 +02:00 · 8525b9694e
commit 8525b9694e
parent 25f4ee5179
25 changed files with 61 additions and 0 deletions
--- a/docs/formatdomaincaps.html.in
+++ b/docs/formatdomaincaps.html.in
@ -208,6 +208,22 @@
      </dd>
    </dl>

+    <h3><a id="elementsIothread">CPU configuration</a></h3>
+
+    <p>
+      The <code>iothread</code> elements indicates whether or not
+      <a href="formatdomain.html#elementsIOThreadsAllocation">I/O threads</a>
+      are supported.
+    </p>
+
+<pre>
+&lt;domainCapabilities&gt;
+  ...
+  &lt;iothread supported='yes'/&gt;
+  ...
+&lt;domainCapabilities&gt;
+</pre>
+
    <h3><a id="elementsDevices">Devices</a></h3>

    <p>
--- a/docs/schemas/domaincaps.rng
+++ b/docs/schemas/domaincaps.rng
@ -28,6 +28,9 @@
        <optional>
          <ref name='vcpu'/>
        </optional>
+        <optional>
+          <ref name='iothreads'/>
+        </optional>
        <optional>
          <ref name='os'/>
        </optional>
@ -53,6 +56,13 @@
    </element>
  </define>

+  <define name='iothreads'>
+    <element name='iothreads'>
+      <ref name='supported'/>
+      <empty/>
+    </element>
+  </define>
+
  <define name='loader'>
    <element name='loader'>
      <ref name='supported'/>
--- a/src/conf/domain_capabilities.c
+++ b/src/conf/domain_capabilities.c
@ -562,6 +562,9 @@ virDomainCapsFormat(virDomainCapsPtr const caps)
    if (caps->maxvcpus)
        virBufferAsprintf(&buf, "<vcpu max='%d'/>\n", caps->maxvcpus);

+    virBufferAsprintf(&buf, "<iothreads supported='%s'/>\n",
+                      caps->iothreads ? "yes" : "no");
+
    virDomainCapsOSFormat(&buf, &caps->os);
    virDomainCapsCPUFormat(&buf, &caps->cpu);

--- a/src/conf/domain_capabilities.h
+++ b/src/conf/domain_capabilities.h
@ -147,6 +147,7 @@ struct _virDomainCaps {

    /* Some machine specific info */
    int maxvcpus;
+    bool iothreads;  /* Whether I/O threads are supported or not. */

    virDomainCapsOS os;
    virDomainCapsCPU cpu;
--- a/src/qemu/qemu_capabilities.c
+++ b/src/qemu/qemu_capabilities.c
@ -4639,6 +4639,16 @@ virQEMUCapsFillDomainCPUCaps(virCapsPtr caps,
 }


+static int
+virQEMUCapsFillDomainIOThreadCaps(virQEMUCapsPtr qemuCaps,
+                                  virDomainCapsPtr domCaps)
+{
+    domCaps->iothreads = virQEMUCapsGet(qemuCaps, QEMU_CAPS_OBJECT_IOTHREAD);
+
+    return 0;
+}
+
+
 static int
 virQEMUCapsFillDomainDeviceDiskCaps(virQEMUCapsPtr qemuCaps,
                                    const char *machine,
@ -4873,6 +4883,7 @@ virQEMUCapsFillDomainCaps(virCapsPtr caps,

    if (virQEMUCapsFillDomainOSCaps(os, firmwares, nfirmwares) < 0 ||
        virQEMUCapsFillDomainCPUCaps(caps, qemuCaps, domCaps) < 0 ||
+        virQEMUCapsFillDomainIOThreadCaps(qemuCaps, domCaps) < 0 ||
        virQEMUCapsFillDomainDeviceDiskCaps(qemuCaps,
                                            domCaps->machine, disk) < 0 ||
        virQEMUCapsFillDomainDeviceGraphicsCaps(qemuCaps, graphics) < 0 ||
--- a/tests/domaincapsschemadata/basic.xml
+++ b/tests/domaincapsschemadata/basic.xml
@ -3,6 +3,7 @@
  <domain>uml</domain>
  <machine>my-machine-type</machine>
  <arch>x86_64</arch>
+  <iothreads supported='no'/>
  <os supported='no'/>
  <cpu>
    <mode name='host-passthrough' supported='no'/>
--- a/tests/domaincapsschemadata/full.xml
+++ b/tests/domaincapsschemadata/full.xml
@ -4,6 +4,7 @@
  <machine>my-machine-type</machine>
  <arch>x86_64</arch>
  <vcpu max='255'/>
+  <iothreads supported='no'/>
  <os supported='yes'>
    <loader supported='yes'>
      <value>/foo/bar</value>
--- a/tests/domaincapsschemadata/libxl-xenfv.xml
+++ b/tests/domaincapsschemadata/libxl-xenfv.xml
@ -4,6 +4,7 @@
  <machine>xenfv</machine>
  <arch>x86_64</arch>
  <vcpu max='128'/>
+  <iothreads supported='no'/>
  <os supported='yes'>
    <loader supported='yes'>
      <value>/usr/lib/xen/boot/hvmloader</value>
--- a/tests/domaincapsschemadata/libxl-xenpv.xml
+++ b/tests/domaincapsschemadata/libxl-xenpv.xml
@ -4,6 +4,7 @@
  <machine>xenpv</machine>
  <arch>x86_64</arch>
  <vcpu max='512'/>
+  <iothreads supported='no'/>
  <os supported='yes'>
    <loader supported='no'/>
  </os>
--- a/tests/domaincapsschemadata/qemu_1.7.0.x86_64.xml
+++ b/tests/domaincapsschemadata/qemu_1.7.0.x86_64.xml
@ -4,6 +4,7 @@
  <machine>pc-i440fx-1.7</machine>
  <arch>x86_64</arch>
  <vcpu max='255'/>
+  <iothreads supported='no'/>
  <os supported='yes'>
    <loader supported='yes'>
      <value>/usr/share/AAVMF/AAVMF_CODE.fd</value>
--- a/tests/domaincapsschemadata/qemu_2.12.0-virt.aarch64.xml
+++ b/tests/domaincapsschemadata/qemu_2.12.0-virt.aarch64.xml
@ -4,6 +4,7 @@
  <machine>virt-2.12</machine>
  <arch>aarch64</arch>
  <vcpu max='255'/>
+  <iothreads supported='yes'/>
  <os supported='yes'>
    <loader supported='yes'>
      <value>/usr/share/AAVMF/AAVMF_CODE.fd</value>
--- a/tests/domaincapsschemadata/qemu_2.12.0.ppc64.xml
+++ b/tests/domaincapsschemadata/qemu_2.12.0.ppc64.xml
@ -4,6 +4,7 @@
  <machine>pseries-2.12</machine>
  <arch>ppc64</arch>
  <vcpu max='1024'/>
+  <iothreads supported='yes'/>
  <os supported='yes'>
    <loader supported='yes'>
      <value>/usr/share/AAVMF/AAVMF_CODE.fd</value>
--- a/tests/domaincapsschemadata/qemu_2.12.0.s390x.xml
+++ b/tests/domaincapsschemadata/qemu_2.12.0.s390x.xml
@ -4,6 +4,7 @@
  <machine>s390-ccw-virtio-2.12</machine>
  <arch>s390x</arch>
  <vcpu max='248'/>
+  <iothreads supported='yes'/>
  <os supported='yes'>
    <loader supported='yes'>
      <value>/usr/share/AAVMF/AAVMF_CODE.fd</value>
--- a/tests/domaincapsschemadata/qemu_2.12.0.x86_64.xml
+++ b/tests/domaincapsschemadata/qemu_2.12.0.x86_64.xml
@ -4,6 +4,7 @@
  <machine>pc-i440fx-2.12</machine>
  <arch>x86_64</arch>
  <vcpu max='255'/>
+  <iothreads supported='yes'/>
  <os supported='yes'>
    <loader supported='yes'>
      <value>/usr/share/AAVMF/AAVMF_CODE.fd</value>
--- a/tests/domaincapsschemadata/qemu_2.6.0-virt.aarch64.xml
+++ b/tests/domaincapsschemadata/qemu_2.6.0-virt.aarch64.xml
@ -4,6 +4,7 @@
  <machine>virt-2.6</machine>
  <arch>aarch64</arch>
  <vcpu max='255'/>
+  <iothreads supported='yes'/>
  <os supported='yes'>
    <loader supported='yes'>
      <value>/usr/share/AAVMF/AAVMF_CODE.fd</value>
--- a/tests/domaincapsschemadata/qemu_2.6.0.aarch64.xml
+++ b/tests/domaincapsschemadata/qemu_2.6.0.aarch64.xml
@ -4,6 +4,7 @@
  <machine>integratorcp</machine>
  <arch>aarch64</arch>
  <vcpu max='1'/>
+  <iothreads supported='yes'/>
  <os supported='yes'>
    <loader supported='yes'>
      <value>/usr/share/AAVMF/AAVMF_CODE.fd</value>
--- a/tests/domaincapsschemadata/qemu_2.6.0.ppc64.xml
+++ b/tests/domaincapsschemadata/qemu_2.6.0.ppc64.xml
@ -4,6 +4,7 @@
  <machine>pseries-2.6</machine>
  <arch>ppc64</arch>
  <vcpu max='255'/>
+  <iothreads supported='yes'/>
  <os supported='yes'>
    <loader supported='yes'>
      <value>/usr/share/AAVMF/AAVMF_CODE.fd</value>
--- a/tests/domaincapsschemadata/qemu_2.6.0.x86_64.xml
+++ b/tests/domaincapsschemadata/qemu_2.6.0.x86_64.xml
@ -4,6 +4,7 @@
  <machine>pc-i440fx-2.6</machine>
  <arch>x86_64</arch>
  <vcpu max='255'/>
+  <iothreads supported='yes'/>
  <os supported='yes'>
    <loader supported='yes'>
      <value>/usr/share/AAVMF/AAVMF_CODE.fd</value>
--- a/tests/domaincapsschemadata/qemu_2.7.0.s390x.xml
+++ b/tests/domaincapsschemadata/qemu_2.7.0.s390x.xml
@ -4,6 +4,7 @@
  <machine>s390-ccw-virtio-2.7</machine>
  <arch>s390x</arch>
  <vcpu max='248'/>
+  <iothreads supported='yes'/>
  <os supported='yes'>
    <loader supported='yes'>
      <value>/usr/share/AAVMF/AAVMF_CODE.fd</value>
--- a/tests/domaincapsschemadata/qemu_2.8.0-tcg.x86_64.xml
+++ b/tests/domaincapsschemadata/qemu_2.8.0-tcg.x86_64.xml
@ -4,6 +4,7 @@
  <machine>pc-i440fx-2.8</machine>
  <arch>x86_64</arch>
  <vcpu max='255'/>
+  <iothreads supported='yes'/>
  <os supported='yes'>
    <loader supported='yes'>
      <value>/usr/share/AAVMF/AAVMF_CODE.fd</value>
--- a/tests/domaincapsschemadata/qemu_2.8.0.s390x.xml
+++ b/tests/domaincapsschemadata/qemu_2.8.0.s390x.xml
@ -4,6 +4,7 @@
  <machine>s390-ccw-virtio-2.8</machine>
  <arch>s390x</arch>
  <vcpu max='248'/>
+  <iothreads supported='yes'/>
  <os supported='yes'>
    <loader supported='yes'>
      <value>/usr/share/AAVMF/AAVMF_CODE.fd</value>
--- a/tests/domaincapsschemadata/qemu_2.8.0.x86_64.xml
+++ b/tests/domaincapsschemadata/qemu_2.8.0.x86_64.xml
@ -4,6 +4,7 @@
  <machine>pc-i440fx-2.8</machine>
  <arch>x86_64</arch>
  <vcpu max='255'/>
+  <iothreads supported='yes'/>
  <os supported='yes'>
    <loader supported='yes'>
      <value>/usr/share/AAVMF/AAVMF_CODE.fd</value>
--- a/tests/domaincapsschemadata/qemu_2.9.0-q35.x86_64.xml
+++ b/tests/domaincapsschemadata/qemu_2.9.0-q35.x86_64.xml
@ -4,6 +4,7 @@
  <machine>pc-q35-2.9</machine>
  <arch>x86_64</arch>
  <vcpu max='288'/>
+  <iothreads supported='yes'/>
  <os supported='yes'>
    <loader supported='yes'>
      <value>/usr/share/AAVMF/AAVMF_CODE.fd</value>
--- a/tests/domaincapsschemadata/qemu_2.9.0-tcg.x86_64.xml
+++ b/tests/domaincapsschemadata/qemu_2.9.0-tcg.x86_64.xml
@ -4,6 +4,7 @@
  <machine>pc-i440fx-2.9</machine>
  <arch>x86_64</arch>
  <vcpu max='255'/>
+  <iothreads supported='yes'/>
  <os supported='yes'>
    <loader supported='yes'>
      <value>/usr/share/AAVMF/AAVMF_CODE.fd</value>
--- a/tests/domaincapsschemadata/qemu_2.9.0.x86_64.xml
+++ b/tests/domaincapsschemadata/qemu_2.9.0.x86_64.xml
@ -4,6 +4,7 @@
  <machine>pc-i440fx-2.9</machine>
  <arch>x86_64</arch>
  <vcpu max='255'/>
+  <iothreads supported='yes'/>
  <os supported='yes'>
    <loader supported='yes'>
      <value>/usr/share/AAVMF/AAVMF_CODE.fd</value>