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qemu: capabilities: add 'packed' capability

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Add the capability for QEMU's packed virtqueues for virtio that supposedly have
better cache utilization and performance compared to the default split queues.

Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Boris Fiuczynski <fiuczy@linux.ibm.com>
Signed-off-by: Bjoern Walk <bwalk@linux.ibm.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
This commit is contained in:
Bjoern Walk 2020-04-06 15:13:24 +02:00 committed by Ján Tomko
parent 763416e192
commit 979500e1c1
8 changed files with 13 additions and 0 deletions
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6
src/qemu/qemu_capabilities.c
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@ -571,6 +571,7 @@ VIR_ENUM_IMPL(virQEMUCaps,
/* 360 */
"fsdev.multidevs",
"virtio.packed",
);
@ -1295,6 +1296,7 @@ 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[] = {
@ -1309,6 +1311,7 @@ static struct virQEMUCapsStringFlags virQEMUCapsDevicePropsVirtioBlk[] = {
{ "ats", QEMU_CAPS_VIRTIO_PCI_ATS },
{ "write-cache", QEMU_CAPS_DISK_WRITE_CACHE },
{ "werror", QEMU_CAPS_STORAGE_WERROR },
{ "packed", QEMU_CAPS_VIRTIO_PACKED_QUEUES },
};
static struct virQEMUCapsStringFlags virQEMUCapsDevicePropsVirtioNet[] = {
@ -1321,6 +1324,7 @@ 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[] = {
@ -1332,6 +1336,7 @@ 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[] = {
@ -1401,6 +1406,7 @@ 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[] = {

1
src/qemu/qemu_capabilities.h
View File

@ -552,6 +552,7 @@ typedef enum { /* virQEMUCapsFlags grouping marker for syntax-check */
/* 360 */
QEMU_CAPS_FSDEV_MULTIDEVS, /* fsdev.multidevs */
QEMU_CAPS_VIRTIO_PACKED_QUEUES, /* virtio.packed */
QEMU_CAPS_LAST /* this must always be the last item */
} virQEMUCapsFlags;

1
tests/qemucapabilitiesdata/caps_4.2.0.aarch64.xml
View File

@ -181,6 +181,7 @@
<flag name='vhost-user-fs'/>
<flag name='storage.werror'/>
<flag name='fsdev.multidevs'/>
<flag name='virtio.packed'/>
<version>4001050</version>
<kvmVersion>0</kvmVersion>
<microcodeVersion>61700242</microcodeVersion>

1
tests/qemucapabilitiesdata/caps_4.2.0.s390x.xml
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@ -146,6 +146,7 @@
<flag name='vhost-user-fs'/>
<flag name='storage.werror'/>
<flag name='fsdev.multidevs'/>
<flag name='virtio.packed'/>
<version>4002000</version>
<kvmVersion>0</kvmVersion>
<microcodeVersion>39100242</microcodeVersion>

1
tests/qemucapabilitiesdata/caps_4.2.0.x86_64.xml
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@ -225,6 +225,7 @@
<flag name='vhost-user-fs'/>
<flag name='storage.werror'/>
<flag name='fsdev.multidevs'/>
<flag name='virtio.packed'/>
<version>4002000</version>
<kvmVersion>0</kvmVersion>
<microcodeVersion>43100242</microcodeVersion>

1
tests/qemucapabilitiesdata/caps_5.0.0.aarch64.xml
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@ -183,6 +183,7 @@
<flag name='vhost-user-fs'/>
<flag name='storage.werror'/>
<flag name='fsdev.multidevs'/>
<flag name='virtio.packed'/>
<version>4002050</version>
<kvmVersion>0</kvmVersion>
<microcodeVersion>61700241</microcodeVersion>

1
tests/qemucapabilitiesdata/caps_5.0.0.ppc64.xml
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@ -191,6 +191,7 @@
<flag name='blockdev-snapshot.allow-write-only-overlay'/>
<flag name='storage.werror'/>
<flag name='fsdev.multidevs'/>
<flag name='virtio.packed'/>
<version>4002050</version>
<kvmVersion>0</kvmVersion>
<microcodeVersion>42900241</microcodeVersion>

1
tests/qemucapabilitiesdata/caps_5.0.0.x86_64.xml
View File

@ -228,6 +228,7 @@
<flag name='blockdev-snapshot.allow-write-only-overlay'/>
<flag name='storage.werror'/>
<flag name='fsdev.multidevs'/>
<flag name='virtio.packed'/>
<version>4002091</version>
<kvmVersion>0</kvmVersion>
<microcodeVersion>43100241</microcodeVersion>