6:27 a.m.
From: Sahid Orentino Ferdjaoui <sahid.ferdjaoui(a)redhat.com>
Detect support for vhost-net busy polling (the "poll-us" commandline
option). This was added to upstream qemu in version 2.7.0, commit
69e87b32.
Signed-off-by: Sahid Orentino Ferdjaoui <sahid.ferdjaoui(a)redhat.com>
---
Addressed comments:
- Commit message updated
- s/QEMU_CAPS_VHOST_NET_POLL_US/QEMU_CAPS_NETDEV_POLL_US
- s/vhost-net.poll_us/netdev.poll-us
src/qemu/qemu_capabilities.c | 5 +++++
src/qemu/qemu_capabilities.h | 1 +
tests/qemucapabilitiesdata/caps_2.7.0.s390x.xml | 1 +
tests/qemucapabilitiesdata/caps_2.7.0.x86_64.xml | 1 +
tests/qemucapabilitiesdata/caps_2.8.0.s390x.xml | 1 +
tests/qemucapabilitiesdata/caps_2.8.0.x86_64.xml | 1 +
tests/qemucapabilitiesdata/caps_2.9.0.x86_64.xml | 1 +
7 files changed, 11 insertions(+)
diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c
index 04aa8d5..b3e5a3d 100644
--- a/src/qemu/qemu_capabilities.c
+++ b/src/qemu/qemu_capabilities.c
@@ -431,6 +431,7 @@ VIR_ENUM_IMPL(virQEMUCaps, QEMU_CAPS_LAST,
"virtio.ats",
"loadparm",
"spapr-pci-host-bridge",
+ "netdev.poll-us",
);
@@ -4826,6 +4827,10 @@ virQEMUCapsInitQMPMonitor(virQEMUCapsPtr qemuCaps,
if (qemuCaps->version >= 2006000)
virQEMUCapsSet(qemuCaps, QEMU_CAPS_MACHINE_KERNEL_IRQCHIP_SPLIT);
+ /* Support for busy polling ("-netdev tap,...,poll-us=n") */
+ if (qemuCaps->version >= 2007000)
+ virQEMUCapsSet(qemuCaps, QEMU_CAPS_NETDEV_POLL_US);
+
if (virQEMUCapsProbeQMPCommands(qemuCaps, mon) < 0)
goto cleanup;
diff --git a/src/qemu/qemu_capabilities.h b/src/qemu/qemu_capabilities.h
index 8250b57..7638e2e 100644
--- a/src/qemu/qemu_capabilities.h
+++ b/src/qemu/qemu_capabilities.h
@@ -417,6 +417,7 @@ typedef enum {
QEMU_CAPS_VIRTIO_PCI_ATS, /* virtio-*-pci.ats */
QEMU_CAPS_LOADPARM, /* -machine loadparm */
QEMU_CAPS_DEVICE_SPAPR_PCI_HOST_BRIDGE, /* -device spapr-pci-host-bridge */
+ QEMU_CAPS_NETDEV_POLL_US, /* -netdev poll-us= */
QEMU_CAPS_LAST /* this must always be the last item */
} virQEMUCapsFlags;
diff --git a/tests/qemucapabilitiesdata/caps_2.7.0.s390x.xml
b/tests/qemucapabilitiesdata/caps_2.7.0.s390x.xml
index ec79115..715b4f7 100644
--- a/tests/qemucapabilitiesdata/caps_2.7.0.s390x.xml
+++ b/tests/qemucapabilitiesdata/caps_2.7.0.s390x.xml
@@ -131,6 +131,7 @@
<flag name='query-named-block-nodes'/>
<flag name='kernel-irqchip'/>
<flag name='kernel-irqchip.split'/>
+ <flag name='netdev.poll-us'/>
<version>2007000</version>
<kvmVersion>0</kvmVersion>
<package></package>
diff --git a/tests/qemucapabilitiesdata/caps_2.7.0.x86_64.xml
b/tests/qemucapabilitiesdata/caps_2.7.0.x86_64.xml
index 5f98db8..66b5409 100644
--- a/tests/qemucapabilitiesdata/caps_2.7.0.x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_2.7.0.x86_64.xml
@@ -204,6 +204,7 @@
<flag name='kernel-irqchip'/>
<flag name='kernel-irqchip.split'/>
<flag name='intel-iommu.intremap'/>
+ <flag name='netdev.poll-us'/>
<version>2007000</version>
<kvmVersion>0</kvmVersion>
<package> (v2.7.0)</package>
diff --git a/tests/qemucapabilitiesdata/caps_2.8.0.s390x.xml
b/tests/qemucapabilitiesdata/caps_2.8.0.s390x.xml
index ac40ecc..03c757e 100644
--- a/tests/qemucapabilitiesdata/caps_2.8.0.s390x.xml
+++ b/tests/qemucapabilitiesdata/caps_2.8.0.s390x.xml
@@ -133,6 +133,7 @@
<flag name='query-named-block-nodes'/>
<flag name='kernel-irqchip'/>
<flag name='kernel-irqchip.split'/>
+ <flag name='netdev.poll-us'/>
<version>2007093</version>
<kvmVersion>0</kvmVersion>
<package></package>
diff --git a/tests/qemucapabilitiesdata/caps_2.8.0.x86_64.xml
b/tests/qemucapabilitiesdata/caps_2.8.0.x86_64.xml
index e42e47a..9b73e80 100644
--- a/tests/qemucapabilitiesdata/caps_2.8.0.x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_2.8.0.x86_64.xml
@@ -206,6 +206,7 @@
<flag name='kernel-irqchip.split'/>
<flag name='intel-iommu.intremap'/>
<flag name='intel-iommu.eim'/>
+ <flag name='netdev.poll-us'/>
<version>2008000</version>
<kvmVersion>0</kvmVersion>
<package> (v2.8.0)</package>
diff --git a/tests/qemucapabilitiesdata/caps_2.9.0.x86_64.xml
b/tests/qemucapabilitiesdata/caps_2.9.0.x86_64.xml
index ae1530b..54f9cf3 100644
--- a/tests/qemucapabilitiesdata/caps_2.9.0.x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_2.9.0.x86_64.xml
@@ -217,6 +217,7 @@
<flag name='intel-iommu.device-iotlb'/>
<flag name='virtio.iommu_platform'/>
<flag name='virtio.ats'/>
+ <flag name='netdev.poll-us'/>
<version>2009000</version>
<kvmVersion>0</kvmVersion>
<package> (v2.9.0)</package>
--
2.9.4