[libvirt] [PATCH v2 6/6] qemu: support bootindex on vfio-ccw mdev devices
Boris Fiuczynski
fiuczy at linux.ibm.com
Tue Aug 13 15:40:30 UTC 2019
Add support to specify a boot order on vfio-ccw passthrough devices.
Signed-off-by: Boris Fiuczynski <fiuczy at linux.ibm.com>
Reviewed-by: Marc Hartmayer <mhartmay at linux.ibm.com>
---
src/qemu/qemu_command.c | 4 +++
src/qemu/qemu_domain.c | 26 ++++++++++++-----
.../hostdev-subsys-mdev-vfio-ccw-boot.args | 29 +++++++++++++++++++
.../hostdev-subsys-mdev-vfio-ccw-boot.xml | 23 +++++++++++++++
tests/qemuxml2argvtest.c | 4 +++
.../hostdev-subsys-mdev-vfio-ccw-boot.xml | 28 ++++++++++++++++++
tests/qemuxml2xmltest.c | 4 +++
7 files changed, 111 insertions(+), 7 deletions(-)
create mode 100644 tests/qemuxml2argvdata/hostdev-subsys-mdev-vfio-ccw-boot.args
create mode 100644 tests/qemuxml2argvdata/hostdev-subsys-mdev-vfio-ccw-boot.xml
create mode 100644 tests/qemuxml2xmloutdata/hostdev-subsys-mdev-vfio-ccw-boot.xml
diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index d32ffed5d6..db004bf095 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -5585,6 +5585,7 @@ qemuBuildChrChardevStr(virLogManagerPtr logManager,
return ret;
}
+
char *
qemuBuildHostdevMediatedDevStr(const virDomainDef *def,
virDomainHostdevDefPtr dev,
@@ -5614,6 +5615,9 @@ qemuBuildHostdevMediatedDevStr(const virDomainDef *def,
if (qemuBuildDeviceAddressStr(&buf, def, dev->info, qemuCaps) < 0)
goto cleanup;
+ if (dev->info->bootIndex)
+ virBufferAsprintf(&buf, ",bootindex=%u", dev->info->bootIndex);
+
if (virBufferCheckError(&buf) < 0)
goto cleanup;
diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
index 7331d93868..9ff28bdbf5 100644
--- a/src/qemu/qemu_domain.c
+++ b/src/qemu/qemu_domain.c
@@ -5164,6 +5164,15 @@ qemuDomainMdevDefVFIOPCIValidate(const virDomainHostdevDef *hostdev,
{
const virDomainHostdevSubsysMediatedDev *dev;
+ /* VFIO-PCI does not support boot */
+ if (hostdev->info->bootIndex) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
+ _("booting from assigned devices is not "
+ "supported by mediated devices of "
+ "model vfio-pci"));
+ return -1;
+ }
+
dev = &hostdev->source.subsys.u.mdev;
if (dev->display == VIR_TRISTATE_SWITCH_ABSENT)
return 0;
@@ -5197,12 +5206,21 @@ qemuDomainMdevDefVFIOPCIValidate(const virDomainHostdevDef *hostdev,
static int
-qemuDomainMdevDefVFIOAPValidate(const virDomainHostdevDef *hostdev ATTRIBUTE_UNUSED,
+qemuDomainMdevDefVFIOAPValidate(const virDomainHostdevDef *hostdev,
const virDomainDef *def)
{
size_t i;
bool vfioap_found = false;
+ /* VFIO-AP does not support boot */
+ if (hostdev->info->bootIndex) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
+ _("booting from assigned devices is not "
+ "supported by mediated devices of "
+ "model vfio-ap"));
+ return -1;
+ }
+
/* VFIO-AP is restricted to a single mediated device only */
for (i = 0; i < def->nhostdevs; i++) {
virDomainHostdevDefPtr hdev = def->hostdevs[i];
@@ -5278,12 +5296,6 @@ qemuDomainDeviceDefValidateHostdev(const virDomainHostdevDef *hostdev,
}
break;
case VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_MDEV:
- if (hostdev->info->bootIndex) {
- virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
- _("booting from assigned devices is not "
- "supported by mediated devices"));
- return -1;
- }
return qemuDomainMdevDefValidate(hostdev, def, qemuCaps);
case VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_LAST:
default:
diff --git a/tests/qemuxml2argvdata/hostdev-subsys-mdev-vfio-ccw-boot.args b/tests/qemuxml2argvdata/hostdev-subsys-mdev-vfio-ccw-boot.args
new file mode 100644
index 0000000000..6fb22b3014
--- /dev/null
+++ b/tests/qemuxml2argvdata/hostdev-subsys-mdev-vfio-ccw-boot.args
@@ -0,0 +1,29 @@
+LC_ALL=C \
+PATH=/bin \
+HOME=/tmp/lib/domain--1-QEMUGuest1 \
+USER=test \
+LOGNAME=test \
+XDG_DATA_HOME=/tmp/lib/domain--1-QEMUGuest1/.local/share \
+XDG_CACHE_HOME=/tmp/lib/domain--1-QEMUGuest1/.cache \
+XDG_CONFIG_HOME=/tmp/lib/domain--1-QEMUGuest1/.config \
+QEMU_AUDIO_DRV=none \
+/usr/bin/qemu-system-s390x \
+-name QEMUGuest1 \
+-S \
+-machine s390-ccw-virtio,accel=tcg,usb=off,dump-guest-core=off \
+-m 512 \
+-realtime mlock=off \
+-smp 2,sockets=2,cores=1,threads=1 \
+-uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
+-display none \
+-no-user-config \
+-nodefaults \
+-chardev socket,id=charmonitor,path=/tmp/lib/domain--1-QEMUGuest1/monitor.sock,\
+server,nowait \
+-mon chardev=charmonitor,id=monitor,mode=control \
+-rtc base=utc \
+-no-shutdown \
+-device vfio-ccw,id=hostdev0,\
+sysfsdev=/sys/bus/mdev/devices/90c6c135-ad44-41d0-b1b7-bae47de48627,\
+devno=fe.0.0000,bootindex=1 \
+-device virtio-balloon-ccw,id=balloon0,devno=fe.0.0001
diff --git a/tests/qemuxml2argvdata/hostdev-subsys-mdev-vfio-ccw-boot.xml b/tests/qemuxml2argvdata/hostdev-subsys-mdev-vfio-ccw-boot.xml
new file mode 100644
index 0000000000..6cca13c33f
--- /dev/null
+++ b/tests/qemuxml2argvdata/hostdev-subsys-mdev-vfio-ccw-boot.xml
@@ -0,0 +1,23 @@
+<domain type='qemu'>
+ <name>QEMUGuest1</name>
+ <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
+ <memory unit='KiB'>524288</memory>
+ <currentMemory unit='KiB'>524288</currentMemory>
+ <vcpu placement='static'>2</vcpu>
+ <os>
+ <type arch='s390x' machine='s390-ccw-virtio'>hvm</type>
+ </os>
+ <clock offset='utc'/>
+ <on_poweroff>destroy</on_poweroff>
+ <on_reboot>restart</on_reboot>
+ <on_crash>destroy</on_crash>
+ <devices>
+ <emulator>/usr/bin/qemu-system-s390x</emulator>
+ <hostdev mode='subsystem' type='mdev' model='vfio-ccw'>
+ <source>
+ <address uuid='90c6c135-ad44-41d0-b1b7-bae47de48627'/>
+ </source>
+ <boot order='1'/>
+ </hostdev>
+ </devices>
+</domain>
diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c
index e378df097c..e916c14cf4 100644
--- a/tests/qemuxml2argvtest.c
+++ b/tests/qemuxml2argvtest.c
@@ -1621,6 +1621,10 @@ mymain(void)
QEMU_CAPS_CCW,
QEMU_CAPS_CCW_CSSID_UNRESTRICTED,
QEMU_CAPS_DEVICE_VFIO_CCW);
+ DO_TEST("hostdev-subsys-mdev-vfio-ccw-boot",
+ QEMU_CAPS_CCW,
+ QEMU_CAPS_CCW_CSSID_UNRESTRICTED,
+ QEMU_CAPS_DEVICE_VFIO_CCW);
DO_TEST_FAILURE("hostdev-subsys-mdev-vfio-ccw",
QEMU_CAPS_CCW,
QEMU_CAPS_CCW_CSSID_UNRESTRICTED);
diff --git a/tests/qemuxml2xmloutdata/hostdev-subsys-mdev-vfio-ccw-boot.xml b/tests/qemuxml2xmloutdata/hostdev-subsys-mdev-vfio-ccw-boot.xml
new file mode 100644
index 0000000000..ab387a5198
--- /dev/null
+++ b/tests/qemuxml2xmloutdata/hostdev-subsys-mdev-vfio-ccw-boot.xml
@@ -0,0 +1,28 @@
+<domain type='qemu'>
+ <name>QEMUGuest1</name>
+ <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
+ <memory unit='KiB'>524288</memory>
+ <currentMemory unit='KiB'>524288</currentMemory>
+ <vcpu placement='static'>2</vcpu>
+ <os>
+ <type arch='s390x' machine='s390-ccw-virtio'>hvm</type>
+ </os>
+ <clock offset='utc'/>
+ <on_poweroff>destroy</on_poweroff>
+ <on_reboot>restart</on_reboot>
+ <on_crash>destroy</on_crash>
+ <devices>
+ <emulator>/usr/bin/qemu-system-s390x</emulator>
+ <hostdev mode='subsystem' type='mdev' managed='no' model='vfio-ccw'>
+ <source>
+ <address uuid='90c6c135-ad44-41d0-b1b7-bae47de48627'/>
+ </source>
+ <boot order='1'/>
+ <address type='ccw' cssid='0xfe' ssid='0x0' devno='0x0000'/>
+ </hostdev>
+ <memballoon model='virtio'>
+ <address type='ccw' cssid='0xfe' ssid='0x0' devno='0x0001'/>
+ </memballoon>
+ <panic model='s390'/>
+ </devices>
+</domain>
diff --git a/tests/qemuxml2xmltest.c b/tests/qemuxml2xmltest.c
index 6fa9a26b64..6f672184be 100644
--- a/tests/qemuxml2xmltest.c
+++ b/tests/qemuxml2xmltest.c
@@ -958,6 +958,10 @@ mymain(void)
QEMU_CAPS_CCW,
QEMU_CAPS_CCW_CSSID_UNRESTRICTED,
QEMU_CAPS_DEVICE_VFIO_CCW);
+ DO_TEST("hostdev-subsys-mdev-vfio-ccw-boot",
+ QEMU_CAPS_CCW,
+ QEMU_CAPS_CCW_CSSID_UNRESTRICTED,
+ QEMU_CAPS_DEVICE_VFIO_CCW);
DO_TEST("hostdev-subsys-mdev-vfio-ap",
QEMU_CAPS_CCW,
QEMU_CAPS_CCW_CSSID_UNRESTRICTED,
--
2.17.0
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