[libvirt] [PATCH v2 12/25] qemu: Support disk model=virtio-{non-}transitional
Cole Robinson
crobinso at redhat.com
Wed Jan 23 21:32:40 UTC 2019
Add new <disk> model values for virtio transitional devices. When
combined with bus='virtio':
* "virtio-transitional" maps to qemu "virtio-blk-pci-transitional"
* "virtio-non-transitional" maps to qemu "virtio-blk-pci-non-transitional"
Signed-off-by: Cole Robinson <crobinso at redhat.com>
---
src/qemu/qemu_command.c | 71 +++++++++++++++++++
src/qemu/qemu_domain_address.c | 3 +
.../virtio-non-transitional.x86_64-3.1.0.args | 4 +-
...virtio-non-transitional.x86_64-latest.args | 4 +-
.../virtio-transitional.x86_64-3.1.0.args | 5 +-
.../virtio-transitional.x86_64-latest.args | 7 +-
.../virtio-transitional.xml | 10 ++-
7 files changed, 92 insertions(+), 12 deletions(-)
diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index 659274f25a..3cf0f5b13e 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -421,6 +421,8 @@ qemuBuildVirtioDevStr(virBufferPtr buf,
const char *implName = NULL;
virDomainDeviceDef device = { .type = devtype };
virDomainDeviceInfoPtr info;
+ int tmodel_cap, ntmodel_cap;
+ bool has_tmodel, has_ntmodel;
virDomainDeviceSetData(&device, devdata);
info = virDomainDeviceGetInfo(&device);
@@ -462,9 +464,78 @@ qemuBuildVirtioDevStr(virBufferPtr buf,
virBufferAsprintf(buf, "%s-%s", baseName, implName);
+ switch (devtype) {
+ case VIR_DOMAIN_DEVICE_DISK:
+ has_tmodel = device.data.disk->model == VIR_DOMAIN_DISK_MODEL_VIRTIO_TRANSITIONAL;
+ has_ntmodel = device.data.disk->model == VIR_DOMAIN_DISK_MODEL_VIRTIO_NON_TRANSITIONAL;
+ tmodel_cap = QEMU_CAPS_DEVICE_VIRTIO_BLK_PCI_TRANSITIONAL;
+ ntmodel_cap = QEMU_CAPS_DEVICE_VIRTIO_BLK_PCI_NON_TRANSITIONAL;
+ break;
+
+ case VIR_DOMAIN_DEVICE_LEASE:
+ case VIR_DOMAIN_DEVICE_FS:
+ case VIR_DOMAIN_DEVICE_NET:
+ case VIR_DOMAIN_DEVICE_INPUT:
+ case VIR_DOMAIN_DEVICE_SOUND:
+ case VIR_DOMAIN_DEVICE_VIDEO:
+ case VIR_DOMAIN_DEVICE_HOSTDEV:
+ case VIR_DOMAIN_DEVICE_WATCHDOG:
+ case VIR_DOMAIN_DEVICE_CONTROLLER:
+ case VIR_DOMAIN_DEVICE_GRAPHICS:
+ case VIR_DOMAIN_DEVICE_HUB:
+ case VIR_DOMAIN_DEVICE_REDIRDEV:
+ case VIR_DOMAIN_DEVICE_NONE:
+ case VIR_DOMAIN_DEVICE_SMARTCARD:
+ case VIR_DOMAIN_DEVICE_CHR:
+ case VIR_DOMAIN_DEVICE_MEMBALLOON:
+ case VIR_DOMAIN_DEVICE_NVRAM:
+ 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:
+ case VIR_DOMAIN_DEVICE_LAST:
+ default:
+ return 0;
+ }
+
+ if (info->type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI &&
+ (has_tmodel || has_ntmodel)) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+ _("virtio (non-)transitional models are not "
+ "supported for address type=%s"),
+ virDomainDeviceAddressTypeToString(info->type));
+ return -1;
+ }
+
+ if (has_tmodel) {
+ if (virQEMUCapsGet(qemuCaps, tmodel_cap))
+ virBufferAddLit(buf, "-transitional");
+
+ /* No error for if -transitional is not supported: our address
+ * allocation will force the device into plain PCI bus, which
+ * is functionally identical to standard 'virtio-XXX' behavior
+ */
+ } else if (has_ntmodel) {
+ if (virQEMUCapsGet(qemuCaps, ntmodel_cap)) {
+ virBufferAddLit(buf, "-non-transitional");
+ } else if (virQEMUCapsGet(qemuCaps,
+ QEMU_CAPS_VIRTIO_PCI_DISABLE_LEGACY)) {
+ virBufferAddLit(buf, ",disable-legacy=on,disable-modern=off");
+ } else {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
+ _("virtio non-transitional model not supported "
+ "for this qemu"));
+ return -1;
+ }
+ }
+
return 0;
}
+
static int
qemuBuildVirtioOptionsStr(virBufferPtr buf,
virDomainVirtioOptionsPtr virtio,
diff --git a/src/qemu/qemu_domain_address.c b/src/qemu/qemu_domain_address.c
index f2ae0804a8..808e551b9c 100644
--- a/src/qemu/qemu_domain_address.c
+++ b/src/qemu/qemu_domain_address.c
@@ -720,6 +720,9 @@ qemuDomainDeviceCalculatePCIConnectFlags(virDomainDeviceDefPtr dev,
case VIR_DOMAIN_DEVICE_DISK:
switch ((virDomainDiskBus) dev->data.disk->bus) {
case VIR_DOMAIN_DISK_BUS_VIRTIO:
+ /* Transitional devices only work in conventional PCI slots */
+ if (dev->data.disk->model == VIR_DOMAIN_DISK_MODEL_VIRTIO_TRANSITIONAL)
+ return pciFlags;
return virtioFlags; /* only virtio disks use PCI */
case VIR_DOMAIN_DISK_BUS_IDE:
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 9e11e900da..70446f16f2 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
@@ -27,8 +27,8 @@ file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
addr=0x1 \
-device pcie-root-port,port=0x9,chassis=2,id=pci.2,bus=pcie.0,addr=0x1.0x1 \
-drive file=/dev/HostVG/QEMUGuest1,format=raw,if=none,id=drive-virtio-disk0 \
--device virtio-blk-pci,scsi=off,bus=pci.1,addr=0x0,drive=drive-virtio-disk0,\
-id=virtio-disk0,bootindex=1 \
+-device virtio-blk-pci,disable-legacy=on,disable-modern=off,scsi=off,bus=pci.1,\
+addr=0x0,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1 \
-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 070b4b8334..37078765bc 100644
--- a/tests/qemuxml2argvdata/virtio-non-transitional.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/virtio-non-transitional.x86_64-latest.args
@@ -27,8 +27,8 @@ file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
addr=0x1 \
-device pcie-root-port,port=0x9,chassis=2,id=pci.2,bus=pcie.0,addr=0x1.0x1 \
-drive file=/dev/HostVG/QEMUGuest1,format=raw,if=none,id=drive-virtio-disk0 \
--device virtio-blk-pci,scsi=off,bus=pci.1,addr=0x0,drive=drive-virtio-disk0,\
-id=virtio-disk0,bootindex=1 \
+-device virtio-blk-pci-non-transitional,scsi=off,bus=pci.1,addr=0x0,\
+drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1 \
-sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,\
resourcecontrol=deny \
-msg timestamp=on
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 9e11e900da..356e8fdf4c 100644
--- a/tests/qemuxml2argvdata/virtio-transitional.x86_64-3.1.0.args
+++ b/tests/qemuxml2argvdata/virtio-transitional.x86_64-3.1.0.args
@@ -25,9 +25,10 @@ file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
-boot strict=on \
-device pcie-root-port,port=0x8,chassis=1,id=pci.1,bus=pcie.0,multifunction=on,\
addr=0x1 \
--device pcie-root-port,port=0x9,chassis=2,id=pci.2,bus=pcie.0,addr=0x1.0x1 \
+-device pcie-pci-bridge,id=pci.2,bus=pci.1,addr=0x0 \
+-device pcie-root-port,port=0x9,chassis=3,id=pci.3,bus=pcie.0,addr=0x1.0x1 \
-drive file=/dev/HostVG/QEMUGuest1,format=raw,if=none,id=drive-virtio-disk0 \
--device virtio-blk-pci,scsi=off,bus=pci.1,addr=0x0,drive=drive-virtio-disk0,\
+-device virtio-blk-pci,scsi=off,bus=pci.2,addr=0x1,drive=drive-virtio-disk0,\
id=virtio-disk0,bootindex=1 \
-sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,\
resourcecontrol=deny \
diff --git a/tests/qemuxml2argvdata/virtio-transitional.x86_64-latest.args b/tests/qemuxml2argvdata/virtio-transitional.x86_64-latest.args
index 070b4b8334..e78223eac8 100644
--- a/tests/qemuxml2argvdata/virtio-transitional.x86_64-latest.args
+++ b/tests/qemuxml2argvdata/virtio-transitional.x86_64-latest.args
@@ -25,10 +25,11 @@ file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
-boot strict=on \
-device pcie-root-port,port=0x8,chassis=1,id=pci.1,bus=pcie.0,multifunction=on,\
addr=0x1 \
--device pcie-root-port,port=0x9,chassis=2,id=pci.2,bus=pcie.0,addr=0x1.0x1 \
+-device pcie-pci-bridge,id=pci.2,bus=pci.1,addr=0x0 \
+-device pcie-root-port,port=0x9,chassis=3,id=pci.3,bus=pcie.0,addr=0x1.0x1 \
-drive file=/dev/HostVG/QEMUGuest1,format=raw,if=none,id=drive-virtio-disk0 \
--device virtio-blk-pci,scsi=off,bus=pci.1,addr=0x0,drive=drive-virtio-disk0,\
-id=virtio-disk0,bootindex=1 \
+-device virtio-blk-pci-transitional,scsi=off,bus=pci.2,addr=0x1,\
+drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1 \
-sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,\
resourcecontrol=deny \
-msg timestamp=on
diff --git a/tests/qemuxml2xmloutdata/virtio-transitional.xml b/tests/qemuxml2xmloutdata/virtio-transitional.xml
index 1d28af9abb..c19e133bb3 100644
--- a/tests/qemuxml2xmloutdata/virtio-transitional.xml
+++ b/tests/qemuxml2xmloutdata/virtio-transitional.xml
@@ -18,7 +18,7 @@
<driver name='qemu' type='raw'/>
<source dev='/dev/HostVG/QEMUGuest1'/>
<target dev='vda' bus='virtio'/>
- <address type='pci' domain='0x0000' bus='0x01' slot='0x00' function='0x0'/>
+ <address type='pci' domain='0x0000' bus='0x02' slot='0x01' function='0x0'/>
</disk>
<controller type='usb' index='0' model='none'/>
<controller type='sata' index='0'>
@@ -30,9 +30,13 @@
<target chassis='1' port='0x8'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x0' multifunction='on'/>
</controller>
- <controller type='pci' index='2' model='pcie-root-port'>
+ <controller type='pci' index='2' model='pcie-to-pci-bridge'>
+ <model name='pcie-pci-bridge'/>
+ <address type='pci' domain='0x0000' bus='0x01' slot='0x00' function='0x0'/>
+ </controller>
+ <controller type='pci' index='3' model='pcie-root-port'>
<model name='pcie-root-port'/>
- <target chassis='2' port='0x9'/>
+ <target chassis='3' port='0x9'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
</controller>
<input type='mouse' bus='ps2'/>
--
2.20.1
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