Re: [PATCH 1/4] qemu: capabilities: add 'packed' capability

Add the capability for QEMU's packed virtqueues for virtio that supposedly have better cache utilization and performance compared to the default split queues. Signed-off-by: Bjoern Walk <bwalk(a)linux.ibm.com&gt; --- src/qemu/qemu_capabilities.c | 6 ++++++ src/qemu/qemu_capabilities.h | 1 + tests/qemucapabilitiesdata/caps_4.2.0.aarch64.xml | 1 + tests/qemucapabilitiesdata/caps_4.2.0.x86_64.xml | 1 + tests/qemucapabilitiesdata/caps_5.0.0.aarch64.xml | 1 + tests/qemucapabilitiesdata/caps_5.0.0.ppc64.xml | 1 + tests/qemucapabilitiesdata/caps_5.0.0.x86_64.xml | 1 + 7 files changed, 12 insertions(+) diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c index a95a60c3..3bc876d7 100644 --- a/src/qemu/qemu_capabilities.c +++ b/src/qemu/qemu_capabilities.c @@ -567,6 +567,7 @@ VIR_ENUM_IMPL(virQEMUCaps, "query-named-block-nodes.flat", "blockdev-snapshot.allow-write-only-overlay", "blockdev-reopen", + "virtio.packed", ); @@ -1291,6 +1292,7 @@ static struct virQEMUCapsStringFlags virQEMUCapsDevicePropsVirtioBalloon[] = { { "disable-legacy", QEMU_CAPS_VIRTIO_PCI_DISABLE_LEGACY }, { "iommu_platform", QEMU_CAPS_VIRTIO_PCI_IOMMU_PLATFORM }, { "ats", QEMU_CAPS_VIRTIO_PCI_ATS }, + { "packed", QEMU_CAPS_VIRTIO_PACKED_QUEUES }, }; static struct virQEMUCapsStringFlags virQEMUCapsDevicePropsVirtioBlk[] = { @@ -1304,6 +1306,7 @@ static struct virQEMUCapsStringFlags virQEMUCapsDevicePropsVirtioBlk[] = { { "iommu_platform", QEMU_CAPS_VIRTIO_PCI_IOMMU_PLATFORM }, { "ats", QEMU_CAPS_VIRTIO_PCI_ATS }, { "write-cache", QEMU_CAPS_DISK_WRITE_CACHE }, + { "packed", QEMU_CAPS_VIRTIO_PACKED_QUEUES }, }; static struct virQEMUCapsStringFlags virQEMUCapsDevicePropsVirtioNet[] = { @@ -1316,6 +1319,7 @@ static struct virQEMUCapsStringFlags virQEMUCapsDevicePropsVirtioNet[] = { { "iommu_platform", QEMU_CAPS_VIRTIO_PCI_IOMMU_PLATFORM }, { "ats", QEMU_CAPS_VIRTIO_PCI_ATS }, { "failover", QEMU_CAPS_VIRTIO_NET_FAILOVER }, + { "packed", QEMU_CAPS_VIRTIO_PACKED_QUEUES }, }; static struct virQEMUCapsStringFlags virQEMUCapsDevicePropsSpaprPCIHostBridge[] = { @@ -1327,6 +1331,7 @@ static struct virQEMUCapsStringFlags virQEMUCapsDevicePropsVirtioSCSI[] = { { "disable-legacy", QEMU_CAPS_VIRTIO_PCI_DISABLE_LEGACY }, { "iommu_platform", QEMU_CAPS_VIRTIO_PCI_IOMMU_PLATFORM }, { "ats", QEMU_CAPS_VIRTIO_PCI_ATS }, + { "packed", QEMU_CAPS_VIRTIO_PACKED_QUEUES }, }; static struct virQEMUCapsStringFlags virQEMUCapsDevicePropsVfioPCI[] = { @@ -1395,6 +1400,7 @@ static struct virQEMUCapsStringFlags virQEMUCapsDevicePropsVirtioGpu[] = { { "disable-legacy", QEMU_CAPS_VIRTIO_PCI_DISABLE_LEGACY }, { "iommu_platform", QEMU_CAPS_VIRTIO_PCI_IOMMU_PLATFORM }, { "ats", QEMU_CAPS_VIRTIO_PCI_ATS }, + { "packed", QEMU_CAPS_VIRTIO_PACKED_QUEUES }, }; static struct virQEMUCapsStringFlags virQEMUCapsDevicePropsICH9[] = { diff --git a/src/qemu/qemu_capabilities.h b/src/qemu/qemu_capabilities.h index f0961e27..21c09974 100644 --- a/src/qemu/qemu_capabilities.h +++ b/src/qemu/qemu_capabilities.h @@ -548,6 +548,7 @@ typedef enum { /* virQEMUCapsFlags grouping marker for syntax-check */ QEMU_CAPS_QMP_QUERY_NAMED_BLOCK_NODES_FLAT, /* query-named-block-nodes supports the 'flat' option */ QEMU_CAPS_BLOCKDEV_SNAPSHOT_ALLOW_WRITE_ONLY, /* blockdev-snapshot has the 'allow-write-only-overlay' feature */ QEMU_CAPS_BLOCKDEV_REOPEN, /* 'blockdev-reopen' qmp command is supported */ + QEMU_CAPS_VIRTIO_PACKED_QUEUES, /* virtio packed virtqueue support */ QEMU_CAPS_LAST /* this must always be the last item */ } virQEMUCapsFlags; diff --git a/tests/qemucapabilitiesdata/caps_4.2.0.aarch64.xml b/tests/qemucapabilitiesdata/caps_4.2.0.aarch64.xml index 640ce29c..f1b7fbbe 100644 --- a/tests/qemucapabilitiesdata/caps_4.2.0.aarch64.xml +++ b/tests/qemucapabilitiesdata/caps_4.2.0.aarch64.xml @@ -179,6 +179,7 @@ <flag name='rng-builtin'/> <flag name='virtio-net.failover'/> <flag name='vhost-user-fs'/> + <flag name='virtio.packed'/> <version>4001050</version> <kvmVersion>0</kvmVersion> <microcodeVersion>61700242</microcodeVersion> diff --git a/tests/qemucapabilitiesdata/caps_4.2.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_4.2.0.x86_64.xml index 83e804ea..15388967 100644 --- a/tests/qemucapabilitiesdata/caps_4.2.0.x86_64.xml +++ b/tests/qemucapabilitiesdata/caps_4.2.0.x86_64.xml @@ -223,6 +223,7 @@ <flag name='rng-builtin'/> <flag name='virtio-net.failover'/> <flag name='vhost-user-fs'/> + <flag name='virtio.packed'/> <version>4002000</version> <kvmVersion>0</kvmVersion> <microcodeVersion>43100242</microcodeVersion> diff --git a/tests/qemucapabilitiesdata/caps_5.0.0.aarch64.xml b/tests/qemucapabilitiesdata/caps_5.0.0.aarch64.xml index e52c6060..9ef8564a 100644 --- a/tests/qemucapabilitiesdata/caps_5.0.0.aarch64.xml +++ b/tests/qemucapabilitiesdata/caps_5.0.0.aarch64.xml @@ -181,6 +181,7 @@ <flag name='virtio-net.failover'/> <flag name='cpu.kvm-no-adjvtime'/> <flag name='vhost-user-fs'/> + <flag name='virtio.packed'/> <version>4002050</version> <kvmVersion>0</kvmVersion> <microcodeVersion>61700241</microcodeVersion> diff --git a/tests/qemucapabilitiesdata/caps_5.0.0.ppc64.xml b/tests/qemucapabilitiesdata/caps_5.0.0.ppc64.xml index 85fdb21c..a2d78ac0 100644 --- a/tests/qemucapabilitiesdata/caps_5.0.0.ppc64.xml +++ b/tests/qemucapabilitiesdata/caps_5.0.0.ppc64.xml @@ -189,6 +189,7 @@ <flag name='vhost-user-fs'/> <flag name='query-named-block-nodes.flat'/> <flag name='blockdev-snapshot.allow-write-only-overlay'/> + <flag name='virtio.packed'/> <version>4002050</version> <kvmVersion>0</kvmVersion> <microcodeVersion>42900241</microcodeVersion> diff --git a/tests/qemucapabilitiesdata/caps_5.0.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_5.0.0.x86_64.xml index d773f7e3..b6a6b3be 100644 --- a/tests/qemucapabilitiesdata/caps_5.0.0.x86_64.xml +++ b/tests/qemucapabilitiesdata/caps_5.0.0.x86_64.xml @@ -226,6 +226,7 @@ <flag name='vhost-user-fs'/> <flag name='query-named-block-nodes.flat'/> <flag name='blockdev-snapshot.allow-write-only-overlay'/> + <flag name='virtio.packed'/> <version>4002050</version> <kvmVersion>0</kvmVersion> <microcodeVersion>43100241</microcodeVersion>