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[PATCH RFE] conf: Add extraArgs option to passt backend
by Enrique Llorente 25 Jun '25

25 Jun '25

Add support for passing extra arguments to the passt binary through the domain XML configuration. This allows users to specify additional command-line arguments for passt that are not covered by existing structured fields. The new extraArgs attribute is added to the backend element: <backend type='passt' extraArgs='--debug --no-dhcp -v'/> The extraArgs string is parsed using g_shell_parse_argv() to split it into individual arguments before passing them to the passt command. This change includes: - New field in virDomainNetBackend structure - XML schema update to allow extraArgs attribute - Parsing and formatting support in domain_conf.c - Backend comparison function update - Memory cleanup for the new field - QEMU passt integration to use the extra arguments - Comprehensive tests for both user and vhostuser interfaces This is an RFE to gather feedback on the approach. I have a few questions for the community: 1. Is this general approach of adding extraArgs reasonable, or should we instead focus on adding specific structured fields for each passt option? 2. Should extraArgs be marked as unsupported/unstable in the documentation, with a clear indication that it's primarily intended for development and testing purposes? 3. Are there any security concerns with allowing arbitrary arguments to be passed to the passt binary via XML configuration? 4. Would it be better to validate the arguments against a known allowlist rather than allowing any argument string? The current implementation uses g_shell_parse_argv() to safely parse the argument string, but I'm open to feedback on whether additional validation or restrictions should be applied. Signed-off-by: Enrique Llorente <ellorent(a)redhat.com> --- src/conf/domain_conf.c | 6 ++- src/conf/domain_conf.h | 1 + src/conf/schemas/domaincommon.rng | 3 ++ src/qemu/qemu_passt.c | 16 +++++++ ...t-user-passt-extra-args.x86_64-latest.args | 35 ++++++++++++++ ...et-user-passt-extra-args.x86_64-latest.xml | 44 +++++++++++++++++ .../net-user-passt-extra-args.xml | 41 ++++++++++++++++ ...stuser-passt-extra-args.x86_64-latest.args | 36 ++++++++++++++ ...ostuser-passt-extra-args.x86_64-latest.xml | 47 +++++++++++++++++++ .../net-vhostuser-passt-extra-args.xml | 44 +++++++++++++++++ tests/qemuxmlconftest.c | 2 + 11 files changed, 274 insertions(+), 1 deletion(-) create mode 100644 tests/qemuxmlconfdata/net-user-passt-extra-args.x86_64-latest.args create mode 100644 tests/qemuxmlconfdata/net-user-passt-extra-args.x86_64-latest.xml create mode 100644 tests/qemuxmlconfdata/net-user-passt-extra-args.xml create mode 100644 tests/qemuxmlconfdata/net-vhostuser-passt-extra-args.x86_64-latest.args create mode 100644 tests/qemuxmlconfdata/net-vhostuser-passt-extra-args.x86_64-latest.xml create mode 100644 tests/qemuxmlconfdata/net-vhostuser-passt-extra-args.xml diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c index 1e24e41a48..a83b9002d0 100644 --- a/src/conf/domain_conf.c +++ b/src/conf/domain_conf.c @@ -2918,6 +2918,7 @@ virDomainNetDefFree(virDomainNetDef *def) g_free(def->backend.tap); g_free(def->backend.vhost); g_free(def->backend.logFile); + g_free(def->backend.extraArgs); virDomainNetTeamingInfoFree(def->teaming); g_free(def->virtPortProfile); g_free(def->script); @@ -9798,6 +9799,7 @@ virDomainNetBackendParseXML(xmlNodePtr node, } def->backend.logFile = virXMLPropString(node, "logFile"); + def->backend.extraArgs = virXMLPropString(node, "extraArgs"); if (tap) def->backend.tap = virFileSanitizePath(tap); @@ -20799,7 +20801,8 @@ virDomainNetBackendIsEqual(virDomainNetBackend *src, if (src->type != dst->type || STRNEQ_NULLABLE(src->tap, dst->tap) || STRNEQ_NULLABLE(src->vhost, dst->vhost) || - STRNEQ_NULLABLE(src->logFile, dst->logFile)) { + STRNEQ_NULLABLE(src->logFile, dst->logFile) || + STRNEQ_NULLABLE(src->extraArgs, dst->extraArgs)) { return false; } return true; @@ -24934,6 +24937,7 @@ virDomainNetBackendFormat(virBuffer *buf, virBufferEscapeString(&attrBuf, " tap='%s'", backend->tap); virBufferEscapeString(&attrBuf, " vhost='%s'", backend->vhost); virBufferEscapeString(&attrBuf, " logFile='%s'", backend->logFile); + virBufferEscapeString(&attrBuf, " extraArgs='%s'", backend->extraArgs); virXMLFormatElement(buf, "backend", &attrBuf, NULL); } diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h index 6997cf7c09..d85e6e5c8e 100644 --- a/src/conf/domain_conf.h +++ b/src/conf/domain_conf.h @@ -1076,6 +1076,7 @@ struct _virDomainNetBackend { char *vhost; /* The following are currently only valid/used when backend type='passt' */ char *logFile; /* path to logfile used by passt process */ + char *extraArgs; /* extra arguments to pass to passt process */ }; struct _virDomainNetPortForwardRange { diff --git a/src/conf/schemas/domaincommon.rng b/src/conf/schemas/domaincommon.rng index 183dd5db5e..58946b6873 100644 --- a/src/conf/schemas/domaincommon.rng +++ b/src/conf/schemas/domaincommon.rng @@ -3931,6 +3931,9 @@ <ref name="absFilePath"/> </attribute> </optional> + <optional> + <attribute name="extraArgs"/> + </optional> </element> </optional> <optional> diff --git a/src/qemu/qemu_passt.c b/src/qemu/qemu_passt.c index fcc34de384..47efbc4c80 100644 --- a/src/qemu/qemu_passt.c +++ b/src/qemu/qemu_passt.c @@ -229,6 +229,22 @@ qemuPasstStart(virDomainObj *vm, if (net->backend.logFile) virCommandAddArgList(cmd, "--log-file", net->backend.logFile, NULL); + /* Add extra arguments */ + if (net->backend.extraArgs) { + g_auto(GStrv) extraArgv = NULL; + gint argc = 0; + + if (!g_shell_parse_argv(net->backend.extraArgs, &argc, &extraArgv, NULL)) { + virReportError(VIR_ERR_CONFIG_UNSUPPORTED, + _("Failed to parse extraArgs: %1$s"), net->backend.extraArgs); + return -1; + } + + for (gint j = 0; j < argc; j++) { + virCommandAddArg(cmd, extraArgv[j]); + } + } + /* Add IP address info */ for (i = 0; i < net->guestIP.nips; i++) { const virNetDevIPAddr *ip = net->guestIP.ips[i]; diff --git a/tests/qemuxmlconfdata/net-user-passt-extra-args.x86_64-latest.args b/tests/qemuxmlconfdata/net-user-passt-extra-args.x86_64-latest.args new file mode 100644 index 0000000000..48d2596594 --- /dev/null +++ b/tests/qemuxmlconfdata/net-user-passt-extra-args.x86_64-latest.args @@ -0,0 +1,35 @@ +LC_ALL=C \ +PATH=/bin \ +HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1 \ +USER=test \ +LOGNAME=test \ +XDG_DATA_HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/.local/share \ +XDG_CACHE_HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/.cache \ +XDG_CONFIG_HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/.config \ +/usr/bin/qemu-system-x86_64 \ +-name guest=QEMUGuest1,debug-threads=on \ +-S \ +-object '{"qom-type":"secret","id":"masterKey0","format":"raw","file":"/var/lib/libvirt/qemu/domain--1-QEMUGuest1/master-key.aes"}' \ +-machine pc,usb=off,dump-guest-core=off,memory-backend=pc.ram,acpi=off \ +-accel tcg \ +-cpu qemu64 \ +-m size=219136k \ +-object '{"qom-type":"memory-backend-ram","id":"pc.ram","size":224395264}' \ +-overcommit mem-lock=off \ +-smp 1,sockets=1,cores=1,threads=1 \ +-uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \ +-display none \ +-no-user-config \ +-nodefaults \ +-chardev socket,id=charmonitor,fd=1729,server=on,wait=off \ +-mon chardev=charmonitor,id=monitor,mode=control \ +-rtc base=utc \ +-no-shutdown \ +-boot strict=on \ +-blockdev '{"driver":"host_device","filename":"/dev/HostVG/QEMUGuest1","node-name":"libvirt-1-storage","read-only":false}' \ +-device '{"driver":"ide-hd","bus":"ide.0","unit":0,"drive":"libvirt-1-storage","id":"ide0-0-0","bootindex":1}' \ +-netdev '{"type":"stream","addr":{"type":"unix","path":"/var/run/libvirt/qemu/passt/-1-QEMUGuest1-net0.socket"},"server":false,"reconnect-ms":5000,"id":"hostnet0"}' \ +-device '{"driver":"rtl8139","netdev":"hostnet0","id":"net0","mac":"00:11:22:33:44:55","bus":"pci.0","addr":"0x2"}' \ +-audiodev '{"id":"audio1","driver":"none"}' \ +-sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny \ +-msg timestamp=on diff --git a/tests/qemuxmlconfdata/net-user-passt-extra-args.x86_64-latest.xml b/tests/qemuxmlconfdata/net-user-passt-extra-args.x86_64-latest.xml new file mode 100644 index 0000000000..e01dc55894 --- /dev/null +++ b/tests/qemuxmlconfdata/net-user-passt-extra-args.x86_64-latest.xml @@ -0,0 +1,44 @@ +<domain type='qemu'> + <name>QEMUGuest1</name> + <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid> + <memory unit='KiB'>219136</memory> + <currentMemory unit='KiB'>219136</currentMemory> + <vcpu placement='static'>1</vcpu> + <os> + <type arch='x86_64' machine='pc'>hvm</type> + <boot dev='hd'/> + </os> + <cpu mode='custom' match='exact' check='none'> + <model fallback='forbid'>qemu64</model> + </cpu> + <clock offset='utc'/> + <on_poweroff>destroy</on_poweroff> + <on_reboot>restart</on_reboot> + <on_crash>destroy</on_crash> + <devices> + <emulator>/usr/bin/qemu-system-x86_64</emulator> + <disk type='block' device='disk'> + <driver name='qemu' type='raw'/> + <source dev='/dev/HostVG/QEMUGuest1'/> + <target dev='hda' bus='ide'/> + <address type='drive' controller='0' bus='0' target='0' unit='0'/> + </disk> + <controller type='usb' index='0' model='none'/> + <controller type='ide' index='0'> + <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/> + </controller> + <controller type='pci' index='0' model='pci-root'/> + <interface type='user'> + <mac address='00:11:22:33:44:55'/> + <source dev='eth42'/> + <ip address='172.17.2.0' family='ipv4' prefix='24'/> + <model type='rtl8139'/> + <backend type='passt' logFile='/var/log/passt.log' extraArgs='--debug --no-dhcp -v'/> + <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/> + </interface> + <input type='mouse' bus='ps2'/> + <input type='keyboard' bus='ps2'/> + <audio id='1' type='none'/> + <memballoon model='none'/> + </devices> +</domain> diff --git a/tests/qemuxmlconfdata/net-user-passt-extra-args.xml b/tests/qemuxmlconfdata/net-user-passt-extra-args.xml new file mode 100644 index 0000000000..2967331796 --- /dev/null +++ b/tests/qemuxmlconfdata/net-user-passt-extra-args.xml @@ -0,0 +1,41 @@ +<domain type='qemu'> + <name>QEMUGuest1</name> + <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid> + <memory unit='KiB'>219136</memory> + <currentMemory unit='KiB'>219136</currentMemory> + <vcpu placement='static'>1</vcpu> + <os> + <type arch='x86_64' machine='pc'>hvm</type> + <boot dev='hd'/> + </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-x86_64</emulator> + <disk type='block' device='disk'> + <driver name='qemu' type='raw'/> + <source dev='/dev/HostVG/QEMUGuest1'/> + <target dev='hda' bus='ide'/> + <address type='drive' controller='0' bus='0' target='0' unit='0'/> + </disk> + <controller type='usb' index='0' model='none'/> + <controller type='ide' index='0'> + <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/> + </controller> + <controller type='pci' index='0' model='pci-root'/> + <interface type='user'> + <mac address='00:11:22:33:44:55'/> + <source dev='eth42'/> + <ip address='172.17.2.0' family='ipv4' prefix='24'/> + <model type='rtl8139'/> + <backend type='passt' logFile='/var/log/passt.log' extraArgs='--debug --no-dhcp -v'/> + <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/> + </interface> + <input type='mouse' bus='ps2'/> + <input type='keyboard' bus='ps2'/> + <audio id='1' type='none'/> + <memballoon model='none'/> + </devices> +</domain> \ No newline at end of file diff --git a/tests/qemuxmlconfdata/net-vhostuser-passt-extra-args.x86_64-latest.args b/tests/qemuxmlconfdata/net-vhostuser-passt-extra-args.x86_64-latest.args new file mode 100644 index 0000000000..939905793d --- /dev/null +++ b/tests/qemuxmlconfdata/net-vhostuser-passt-extra-args.x86_64-latest.args @@ -0,0 +1,36 @@ +LC_ALL=C \ +PATH=/bin \ +HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1 \ +USER=test \ +LOGNAME=test \ +XDG_DATA_HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/.local/share \ +XDG_CACHE_HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/.cache \ +XDG_CONFIG_HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/.config \ +/usr/bin/qemu-system-x86_64 \ +-name guest=QEMUGuest1,debug-threads=on \ +-S \ +-object '{"qom-type":"secret","id":"masterKey0","format":"raw","file":"/var/lib/libvirt/qemu/domain--1-QEMUGuest1/master-key.aes"}' \ +-machine pc,usb=off,dump-guest-core=off,memory-backend=pc.ram,acpi=off \ +-accel tcg \ +-cpu qemu64 \ +-m size=219136k \ +-object '{"qom-type":"memory-backend-file","id":"pc.ram","mem-path":"/var/lib/libvirt/qemu/ram/-1-QEMUGuest1/pc.ram","share":true,"x-use-canonical-path-for-ramblock-id":false,"size":224395264}' \ +-overcommit mem-lock=off \ +-smp 1,sockets=1,cores=1,threads=1 \ +-uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \ +-display none \ +-no-user-config \ +-nodefaults \ +-chardev socket,id=charmonitor,fd=1729,server=on,wait=off \ +-mon chardev=charmonitor,id=monitor,mode=control \ +-rtc base=utc \ +-no-shutdown \ +-boot strict=on \ +-blockdev '{"driver":"host_device","filename":"/dev/HostVG/QEMUGuest1","node-name":"libvirt-1-storage","read-only":false}' \ +-device '{"driver":"ide-hd","bus":"ide.0","unit":0,"drive":"libvirt-1-storage","id":"ide0-0-0","bootindex":1}' \ +-chardev socket,id=charnet0,path=/var/run/libvirt/qemu/passt/-1-QEMUGuest1-net0.socket,reconnect-ms=5000 \ +-netdev '{"type":"vhost-user","chardev":"charnet0","id":"hostnet0"}' \ +-device '{"driver":"virtio-net-pci","netdev":"hostnet0","id":"net0","mac":"00:11:22:33:44:55","bus":"pci.0","addr":"0x2"}' \ +-audiodev '{"id":"audio1","driver":"none"}' \ +-sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny \ +-msg timestamp=on diff --git a/tests/qemuxmlconfdata/net-vhostuser-passt-extra-args.x86_64-latest.xml b/tests/qemuxmlconfdata/net-vhostuser-passt-extra-args.x86_64-latest.xml new file mode 100644 index 0000000000..2673c6f6d1 --- /dev/null +++ b/tests/qemuxmlconfdata/net-vhostuser-passt-extra-args.x86_64-latest.xml @@ -0,0 +1,47 @@ +<domain type='qemu'> + <name>QEMUGuest1</name> + <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid> + <memory unit='KiB'>219136</memory> + <currentMemory unit='KiB'>219136</currentMemory> + <memoryBacking> + <access mode='shared'/> + </memoryBacking> + <vcpu placement='static'>1</vcpu> + <os> + <type arch='x86_64' machine='pc'>hvm</type> + <boot dev='hd'/> + </os> + <cpu mode='custom' match='exact' check='none'> + <model fallback='forbid'>qemu64</model> + </cpu> + <clock offset='utc'/> + <on_poweroff>destroy</on_poweroff> + <on_reboot>restart</on_reboot> + <on_crash>destroy</on_crash> + <devices> + <emulator>/usr/bin/qemu-system-x86_64</emulator> + <disk type='block' device='disk'> + <driver name='qemu' type='raw'/> + <source dev='/dev/HostVG/QEMUGuest1'/> + <target dev='hda' bus='ide'/> + <address type='drive' controller='0' bus='0' target='0' unit='0'/> + </disk> + <controller type='usb' index='0' model='none'/> + <controller type='ide' index='0'> + <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/> + </controller> + <controller type='pci' index='0' model='pci-root'/> + <interface type='vhostuser'> + <mac address='00:11:22:33:44:55'/> + <source dev='eth42'/> + <ip address='172.17.2.0' family='ipv4' prefix='24'/> + <model type='virtio'/> + <backend type='passt' logFile='/var/log/passt.log' extraArgs='--debug --no-dhcp --verbose'/> + <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/> + </interface> + <input type='mouse' bus='ps2'/> + <input type='keyboard' bus='ps2'/> + <audio id='1' type='none'/> + <memballoon model='none'/> + </devices> +</domain> diff --git a/tests/qemuxmlconfdata/net-vhostuser-passt-extra-args.xml b/tests/qemuxmlconfdata/net-vhostuser-passt-extra-args.xml new file mode 100644 index 0000000000..1875e24b5a --- /dev/null +++ b/tests/qemuxmlconfdata/net-vhostuser-passt-extra-args.xml @@ -0,0 +1,44 @@ +<domain type='qemu'> + <name>QEMUGuest1</name> + <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid> + <memory unit='KiB'>219136</memory> + <currentMemory unit='KiB'>219136</currentMemory> + <memoryBacking> + <access mode='shared'/> + </memoryBacking> + <vcpu placement='static'>1</vcpu> + <os> + <type arch='x86_64' machine='pc'>hvm</type> + <boot dev='hd'/> + </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-x86_64</emulator> + <disk type='block' device='disk'> + <driver name='qemu' type='raw'/> + <source dev='/dev/HostVG/QEMUGuest1'/> + <target dev='hda' bus='ide'/> + <address type='drive' controller='0' bus='0' target='0' unit='0'/> + </disk> + <controller type='usb' index='0' model='none'/> + <controller type='ide' index='0'> + <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/> + </controller> + <controller type='pci' index='0' model='pci-root'/> + <interface type='vhostuser'> + <mac address='00:11:22:33:44:55'/> + <source dev='eth42'/> + <ip address='172.17.2.0' family='ipv4' prefix='24'/> + <model type='virtio'/> + <backend type='passt' logFile='/var/log/passt.log' extraArgs='--debug --no-dhcp --verbose'/> + <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/> + </interface> + <input type='mouse' bus='ps2'/> + <input type='keyboard' bus='ps2'/> + <audio id='1' type='none'/> + <memballoon model='none'/> + </devices> +</domain> \ No newline at end of file diff --git a/tests/qemuxmlconftest.c b/tests/qemuxmlconftest.c index 6ad4d90934..843d7efadb 100644 --- a/tests/qemuxmlconftest.c +++ b/tests/qemuxmlconftest.c @@ -1799,8 +1799,10 @@ mymain(void) DO_TEST_CAPS_LATEST("net-user-addr"); DO_TEST_CAPS_LATEST("net-user-passt"); DO_TEST_CAPS_VER("net-user-passt", "7.2.0"); + DO_TEST_CAPS_LATEST("net-user-passt-extra-args"); DO_TEST_CAPS_LATEST_PARSE_ERROR("net-user-slirp-portforward"); DO_TEST_CAPS_LATEST("net-vhostuser-passt"); + DO_TEST_CAPS_LATEST("net-vhostuser-passt-extra-args"); DO_TEST_CAPS_LATEST_PARSE_ERROR("net-vhostuser-passt-no-shmem"); DO_TEST_CAPS_LATEST("net-virtio"); DO_TEST_CAPS_LATEST("net-virtio-device"); -- 2.49.0

4 4

[PATCH] remote/stream-event: Fix a memory leak in remoteStreamCallbackFree()
by liu.xuemei1＠zte.com.cn 25 Jun '25

25 Jun '25

From: Liu Song <liu.song13(a)zte.com.cn> The ff callback is never called in remoteStreamCallbackFree() because cbdata->cb can not be NULL. This causes a leak of 'cbdata->opaque'. The leak can be reproduced by attaching and detaching to the console of an VM using `virsh console`. ASAN reports the leak stack as: Direct leak of 288 byte(s) in 1 object(s) allocated from: #0 0x7f6edf6ba0c7 in calloc (/lib64/libasan.so.8+0xba0c7) #1 0x7f6edf5175b0 in g_malloc0 (/lib64/libglib-2.0.so.0+0x615b0) #2 0x7f6ede6d0be3 in g_type_create_instance (/lib64/libgobject-2.0.so.0+0x3cbe3) #3 0x7f6ede6b82cf in g_object_new_internal (/lib64/libgobject-2.0.so.0+0x242cf) #4 0x7f6ede6b9877 in g_object_new_with_properties (/lib64/libgobject-2.0.so.0+0x25877) #5 0x7f6ede6ba620 in g_object_new (/lib64/libgobject-2.0.so.0+0x26620) #6 0x7f6edeb78138 in virObjectNew ../src/util/virobject.c:252 #7 0x7f6edeb7a78b in virObjectLockableNew ../src/util/virobject.c:274 #8 0x558251e427e1 in virConsoleNew ../tools/virsh-console.c:369 #9 0x558251e427e1 in virshRunConsole ../tools/virsh-console.c:427 Signed-off-by: Liu Song <liu.song13(a)zte.com.cn> --- src/remote/remote_daemon_stream.c | 2 +- src/remote/remote_driver.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/src/remote/remote_daemon_stream.c b/src/remote/remote_daemon_stream.c index 453728a66b..a5032f9a43 100644 --- a/src/remote/remote_daemon_stream.c +++ b/src/remote/remote_daemon_stream.c @@ -437,13 +437,13 @@ int daemonAddClientStream(virNetServerClient *client, return -1; } + virObjectRef(client); if (virStreamEventAddCallback(stream->st, 0, daemonStreamEvent, client, virObjectUnref) < 0) return -1; virObjectRef(client); - if ((stream->filterID = virNetServerClientAddFilter(client, daemonStreamFilter, stream)) < 0) { diff --git a/src/remote/remote_driver.c b/src/remote/remote_driver.c index 2690c05267..9ac13469e9 100644 --- a/src/remote/remote_driver.c +++ b/src/remote/remote_driver.c @@ -5336,7 +5336,7 @@ static void remoteStreamCallbackFree(void *opaque) { struct remoteStreamCallbackData *cbdata = opaque; - if (!cbdata->cb && cbdata->ff) + if (cbdata->ff) (cbdata->ff)(cbdata->opaque); virObjectUnref(cbdata->st); -- 2.27.0

1 0

[PATCH v2 00/13] qemu: use 'usb-bot' device to properly emulate USB cdroms
by Peter Krempa 24 Jun '25

24 Jun '25

Version 2 of this series includes changes I've requested in the review and much more that I've learned during adaptation and testing: - 'usb-bot' and 'usb-storage' are not ABI compatible for CDROMs Migrating a guest from 'usb-bot'(with cdrom) to 'usb-storage' results in I/O errors on reads with linux guest. This required adding compatibility layer - exposing the model in -xml and corresponding post-parse and migratable XML config This patchset still tries as much as possible to use the 'usb-bot' device for cdroms to fix the definition - more tests - keeping of 'usb-storage' support - XML config and documentation - cleanup of the code The necessary logic is explained in the patches as comments. Akihiko Odaki (2): qemu_capabilities: Introduce QEMU_CAPS_DEVICE_USB_BOT qemu: Replace usb-storage with usb-bot Peter Krempa (11): qemuhotplugtest: Use VIR_DOMAIN_DEF_PARSE_ABI_UPDATE for virDomainDeviceDefParse qemuxmlconftest: Test various combinations of config qemusecuritytest: Use 'disk-usb-device' case instead of 'disk-cdrom-bus-other' qemuxmlconftest: Drop 'disk-cdrom-bus-other' qemuxmlconftest: Distribute testing of 'removable' disk property qemuxmlconftest: Invoke "disk-usb-device" case also without QEMU_CAPS_DEVICE_USB_BOT and with ABI_UPDATE conf: introduce usb disk models 'usb-storage' and 'usb-bot' qemu: Fill in model of 'usb' disks to preserve ABI compatibility qemuBuildDeviceAddresDriveProps: Prepare for 'drive' address for usb-bot disks qemu: monitor: Introduce 'qemuMonitorSetUSBDiskAttached' qemuxmlconftest: Prepare for proper testing in 'disk-cdrom-usb-empty' docs/formatdomain.rst | 23 +++- src/conf/domain_conf.c | 2 + src/conf/domain_conf.h | 3 + src/conf/schemas/domaincommon.rng | 2 + src/qemu/qemu_alias.c | 20 ++- src/qemu/qemu_capabilities.c | 7 +- src/qemu/qemu_capabilities.h | 3 + src/qemu/qemu_command.c | 101 ++++++++++++-- src/qemu/qemu_command.h | 5 + src/qemu/qemu_domain.c | 21 +++ src/qemu/qemu_domain_address.c | 2 + src/qemu/qemu_hotplug.c | 18 +++ src/qemu/qemu_monitor.c | 12 ++ src/qemu/qemu_monitor.h | 3 + src/qemu/qemu_monitor_json.c | 20 +++ src/qemu/qemu_monitor_json.h | 5 + src/qemu/qemu_postparse.c | 49 ++++++- src/qemu/qemu_postparse.h | 4 +- src/qemu/qemu_validate.c | 37 +++++- tests/qemublocktest.c | 13 +- .../caps_10.0.0_aarch64.xml | 1 + .../caps_10.0.0_ppc64.xml | 1 + .../caps_10.0.0_s390x.xml | 1 + .../caps_10.0.0_x86_64+amdsev.xml | 1 + .../caps_10.0.0_x86_64.xml | 1 + .../qemucapabilitiesdata/caps_6.2.0_ppc64.xml | 1 + .../caps_6.2.0_x86_64.xml | 1 + .../qemucapabilitiesdata/caps_7.0.0_ppc64.xml | 1 + .../caps_7.0.0_x86_64.xml | 1 + .../qemucapabilitiesdata/caps_7.1.0_ppc64.xml | 1 + .../caps_7.1.0_x86_64.xml | 1 + tests/qemucapabilitiesdata/caps_7.2.0_ppc.xml | 1 + .../caps_7.2.0_x86_64+hvf.xml | 1 + .../caps_7.2.0_x86_64.xml | 1 + .../caps_8.0.0_x86_64.xml | 1 + .../qemucapabilitiesdata/caps_8.1.0_s390x.xml | 1 + .../caps_8.1.0_x86_64.xml | 1 + .../caps_8.2.0_aarch64.xml | 1 + .../caps_8.2.0_armv7l.xml | 1 + .../caps_8.2.0_loongarch64.xml | 1 + .../qemucapabilitiesdata/caps_8.2.0_s390x.xml | 1 + .../caps_8.2.0_x86_64.xml | 1 + .../caps_9.0.0_x86_64.xml | 1 + .../caps_9.1.0_riscv64.xml | 1 + .../qemucapabilitiesdata/caps_9.1.0_s390x.xml | 1 + .../caps_9.1.0_x86_64.xml | 1 + .../caps_9.2.0_aarch64+hvf.xml | 1 + .../qemucapabilitiesdata/caps_9.2.0_s390x.xml | 1 + .../caps_9.2.0_x86_64+amdsev.xml | 1 + .../caps_9.2.0_x86_64.xml | 1 + tests/qemuhotplugtest.c | 8 +- .../qemuhotplug-base-live+cdrom-usb.xml | 2 +- .../qemuhotplug-base-live+disk-usb.xml | 2 +- tests/qemusecuritytest.c | 2 +- .../disk-cache.x86_64-latest.xml | 2 +- .../qemuxmlconfdata/disk-cdrom-bus-other.xml | 30 ----- ...m-usb-empty.x86_64-latest.abi-update.args} | 4 +- ...om-usb-empty.x86_64-latest.abi-update.xml} | 6 +- .../disk-device-removable.x86_64-latest.args | 40 ------ .../qemuxmlconfdata/disk-device-removable.xml | 32 ----- .../disk-scsi.x86_64-latest.args | 2 +- tests/qemuxmlconfdata/disk-scsi.xml | 2 +- .../disk-usb-device-model.x86_64-latest.args | 48 +++++++ ...> disk-usb-device-model.x86_64-latest.xml} | 46 ++++--- .../qemuxmlconfdata/disk-usb-device-model.xml | 46 +++++++ ...est.QEMU_CAPS_DEVICE_USB_BOT-disabled.args | 59 +++++++++ ...test.QEMU_CAPS_DEVICE_USB_BOT-disabled.xml | 107 +++++++++++++++ ...ate.QEMU_CAPS_DEVICE_USB_BOT-disabled.args | 59 +++++++++ ...date.QEMU_CAPS_DEVICE_USB_BOT-disabled.xml | 125 ++++++++++++++++++ ...k-usb-device.x86_64-latest.abi-update.args | 63 +++++++++ ...sk-usb-device.x86_64-latest.abi-update.xml | 125 ++++++++++++++++++ .../disk-usb-device.x86_64-latest.args | 30 ++++- .../disk-usb-device.x86_64-latest.xml | 82 ++++++++++-- tests/qemuxmlconfdata/disk-usb-device.xml | 66 ++++++++- tests/qemuxmlconftest.c | 16 ++- 75 files changed, 1197 insertions(+), 187 deletions(-) delete mode 100644 tests/qemuxmlconfdata/disk-cdrom-bus-other.xml rename tests/qemuxmlconfdata/{disk-cdrom-bus-other.x86_64-latest.args => disk-cdrom-usb-empty.x86_64-latest.abi-update.args} (84%) rename tests/qemuxmlconfdata/{disk-cdrom-bus-other.x86_64-latest.xml => disk-cdrom-usb-empty.x86_64-latest.abi-update.xml} (89%) delete mode 100644 tests/qemuxmlconfdata/disk-device-removable.x86_64-latest.args delete mode 100644 tests/qemuxmlconfdata/disk-device-removable.xml create mode 100644 tests/qemuxmlconfdata/disk-usb-device-model.x86_64-latest.args rename tests/qemuxmlconfdata/{disk-device-removable.x86_64-latest.xml => disk-usb-device-model.x86_64-latest.xml} (56%) create mode 100644 tests/qemuxmlconfdata/disk-usb-device-model.xml create mode 100644 tests/qemuxmlconfdata/disk-usb-device.x86_64-latest.QEMU_CAPS_DEVICE_USB_BOT-disabled.args create mode 100644 tests/qemuxmlconfdata/disk-usb-device.x86_64-latest.QEMU_CAPS_DEVICE_USB_BOT-disabled.xml create mode 100644 tests/qemuxmlconfdata/disk-usb-device.x86_64-latest.abi-update.QEMU_CAPS_DEVICE_USB_BOT-disabled.args create mode 100644 tests/qemuxmlconfdata/disk-usb-device.x86_64-latest.abi-update.QEMU_CAPS_DEVICE_USB_BOT-disabled.xml create mode 100644 tests/qemuxmlconfdata/disk-usb-device.x86_64-latest.abi-update.args create mode 100644 tests/qemuxmlconfdata/disk-usb-device.x86_64-latest.abi-update.xml -- 2.49.0

3 31

[PATCH v2] util: workaround libxml2 lack of thread safe initialization
by Daniel P. Berrangé 23 Jun '25

23 Jun '25

From: Daniel P. Berrangé <berrange(a)redhat.com> The main XML parser code global initializer historically had a mutex protecting it, and more recently uses a pthread_once. The RelaxNG code, however, relies on two other global initializers that are not thread safe, just relying on setting an integer "initialized" flag. Calling the relevant initializers from libvirt in a protected global initializer will protect libvirt's own concurrent usage, however, it cannot protect against other libraries loaded in process that might be using libxml2's schema code. Fortunately: * The chances of other loaded non-libvirt code using libxml is relatively low * The chances of other loaded non-libvirt code using the schema validation / catalog functionality inside libxml is even lower * The chances of both libvirt and the non-libvirt usage having their *1st* usage of libxml2 be concurrent is tiny IOW, in practice, although our solution doesn't fully fix the thread safety, it is good enough. libxml2 should none the less still be fixed to make its global initializers be thread safe without special actions by its API consumers[1]. Resolves: https://gitlab.com/libvirt/libvirt/-/issues/788 [1] https://gitlab.gnome.org/GNOME/libxml2/-/merge_requests/326 Signed-off-by: Daniel P. Berrangé <berrange(a)redhat.com> --- Changed in v3: - Drop xmlInitializeCatalog - I misread the code wrt thread safety - it has a sufficiently protective mutex - Cope with return type change for xmlSchemaInitTypes in libxml >= 2.11.0 src/util/virxml.c | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) diff --git a/src/util/virxml.c b/src/util/virxml.c index 9d46e5f32f..c851d6f407 100644 --- a/src/util/virxml.c +++ b/src/util/virxml.c @@ -26,6 +26,8 @@ #include <libxml/xmlsave.h> #include <libxml/xpathInternals.h> +#include <libxml/xmlschemastypes.h> +#include <libxml/catalog.h> #include "virerror.h" #include "virxml.h" @@ -35,6 +37,7 @@ #include "virstring.h" #include "virutil.h" #include "viruuid.h" +#include "virthread.h" #include "configmake.h" #define VIR_FROM_THIS VIR_FROM_XML @@ -50,6 +53,28 @@ struct virParserData { }; +static int +virXMLSchemaOnceInit(void) +{ +#if LIBXML_VERSION >= 21100 + if (xmlSchemaInitTypes() < 0) { + virReportError(VIR_ERR_INTERNAL_ERROR, + _("Unable to initialize libxml2 schema types")); + return -1; + } +#else + xmlSchemaInitTypes(); +#endif + if (xmlRelaxNGInitTypes() < 0) { + virReportError(VIR_ERR_INTERNAL_ERROR, + _("Unable to initialize libxml2 RelaxNG data")); + return -1; + } + return 0; +} + +VIR_ONCE_GLOBAL_INIT(virXMLSchema); + static xmlXPathContextPtr virXMLXPathContextNew(xmlDocPtr xml) { @@ -1603,6 +1628,9 @@ virXMLValidatorInit(const char *schemafile) { g_autoptr(virXMLValidator) validator = NULL; + if (virXMLSchemaInitialize() < 0) + return NULL; + validator = g_new0(virXMLValidator, 1); validator->schemafile = g_strdup(schemafile); -- 2.49.0

2 1

Re: virsh migrate fails when --copy-storage-all option is given!
by Anushree Mathur 23 Jun '25

23 Jun '25

CC: libvirt devel list Hi Kevin/Peter, Thank you so much for addressing this issue. I tried out few more things and here is my analysis: Even when I removed the readonly option from guest xml I was still seeing the issue in migration,In the qemu-commandline I could still see auto-read-only option being set as true by default. Then I tried giving the auto-read-only as false in the guest xml with qemu-commandline param, it was actually getting set to false and the migration worked! Steps I tried: 1) Started the guest with adding the snippet in the guest xml with parameters as: <qemu:commandline> <qemu:arg value='-blockdev'/> <qemu:arg value='driver=file,filename=/disk_nfs/nfs/migrate_root.qcow2,node-name=drivefile,auto-read-only=false'/> <qemu:arg value='-blockdev'/> <qemu:arg value='driver=qcow2,file=drivefile,node-name=drive0'/> <qemu:arg value='-device'/> <qemu:arg value='virtio-blk-pci,drive=drive0,id=virtio-disk0,bus=pci.0,addr=0x5'/> </qemu:commandline> 2) Started the migration and it worked. Could anyone please clarify from libvirt side what is the change required? Thanks, Anushree-Mathur On 04/06/25 6:57 PM, Peter Krempa wrote: > On Wed, Jun 04, 2025 at 14:41:54 +0200, Kevin Wolf wrote: >> Am 28.05.2025 um 17:34 hat Peter Xu geschrieben: >>> Copy Kevin. >>> >>> On Wed, May 28, 2025 at 07:21:12PM +0530, Anushree Mathur wrote: >>>> Hi all, >>>> >>>> >>>> When I am trying to migrate the guest from host1 to host2 with the command >>>> line as follows: >>>> >>>> date;virsh migrate --live --domain guest1 qemu+ssh://dest/system --verbose >>>> --undefinesource --persistent --auto-converge --postcopy >>>> --copy-storage-all;date >>>> >>>> and it fails with the following error message- >>>> >>>> error: internal error: unable to execute QEMU command 'block-export-add': >>>> Block node is read-only >>>> >>>> HOST ENV: >>>> >>>> qemu : QEMU emulator version 9.2.2 >>>> libvirt : libvirtd (libvirt) 11.1.0 >>>> Seen with upstream qemu also >>>> >>>> Steps to reproduce: >>>> 1) Start the guest1 >>>> 2) Migrate it with the command as >>>> >>>> date;virsh migrate --live --domain guest1 qemu+ssh://dest/system --verbose >>>> --undefinesource --persistent --auto-converge --postcopy >>>> --copy-storage-all;date >>>> >>>> 3) It fails as follows: >>>> error: internal error: unable to execute QEMU command 'block-export-add': >>>> Block node is read-only >> I assume this is about an inactive block node. Probably on the >> destination, but that's not clear to me from the error message. > Yes this would be on the destination. Libvirt exports the nodes on > destination, source connects and does the blockjob. > > The destination side is configured the same way as the source side so > if the source disk is configured as read-write the destination should be > as well > >>>> Things I analyzed- >>>> 1) This issue is not happening if I give --unsafe option in the virsh >>>> migrate command > This is weird; this shouldn't have any impact. > >> What does this translate to on the QEMU command line? >> >>>> 2) O/P of qemu-monitor command also shows ro as false >>>> >>>> virsh qemu-monitor-command guest1 --pretty --cmd '{ "execute": "query-block" > it'd be impossible to execute this on the guest due to timing; you'll > need to collect libvirt debug logs to do that: > > https://www.libvirt.org/kbase/debuglogs.html#tl-dr-enable-debug-logs-for-mo… > > I also thing this should be eventually filed in a > >>>> }' >>>> { >>>> "return": [ >>>> { >>>> "io-status": "ok", >>>> "device": "", >>>> "locked": false, >>>> "removable": false, >>>> "inserted": { >>>> "iops_rd": 0, >>>> "detect_zeroes": "off", >>>> "image": { >>>> "virtual-size": 21474836480, >>>> "filename": "/home/Anu/guest_anu.qcow2", >>>> "cluster-size": 65536, >>>> "format": "qcow2", >>>> "actual-size": 5226561536, >>>> "format-specific": { >>>> "type": "qcow2", >>>> "data": { >>>> "compat": "1.1", >>>> "compression-type": "zlib", >>>> "lazy-refcounts": false, >>>> "refcount-bits": 16, >>>> "corrupt": false, >>>> "extended-l2": false >>>> } >>>> }, >>>> "dirty-flag": false >>>> }, >>>> "iops_wr": 0, >>>> "ro": false, >>>> "node-name": "libvirt-1-format", >>>> "backing_file_depth": 0, >>>> "drv": "qcow2", >>>> "iops": 0, >>>> "bps_wr": 0, >>>> "write_threshold": 0, >>>> "encrypted": false, >>>> "bps": 0, >>>> "bps_rd": 0, >>>> "cache": { >>>> "no-flush": false, >>>> "direct": false, >>>> "writeback": true >>>> }, >>>> "file": "/home/Anu/guest_anu.qcow2" >>>> }, >>>> "qdev": "/machine/peripheral/virtio-disk0/virtio-backend", >>>> "type": "unknown" >>>> } >>>> ], >>>> "id": "libvirt-26" >>>> } >> I assume this is still from the source where the image is still active. > Yes; on the destination the process wouldn't be around long enough to > call 'virsh qemu-monitor-command' > >> Also it doesn't contain the "active" field yet that was recently >> introduced, which could show something about this. I believe you would >> still get "read-only": false for an inactive image if it's supposed to >> be read-write after the migration completes. >> >>>> 3) Guest doesn't have any readonly >>>> >>>> virsh dumpxml guest1 | grep readonly >>>> >>>> 4) Tried giving the proper permissions also >>>> >>>> -rwxrwxrwx. 1 qemu qemu 4.9G Apr 28 15:06 guest_anu.qcow > Is this on the destination? did you pre-create it yourself? otherwise > libvirt is pre-creating that image for-non-shared-storage migration > (--copy-storage-all) which should have proper permissions when it's > created > >>>> 5) Checked for the permission of the pool also that is also proper! >>>> >>>> 6) Found 1 older bug similar to this, pasting the link for reference: >>>> >>>> >>>> https://patchwork.kernel.org/project/qemu-devel/patch/20170811164854.GG4162… >> What's happening in detail is more of a virsh/libvirt question. CCing >> Peter Krempa, he might have an idea. > Please collect the debug log; at least from the destination side of > migration. That should show how the VM is prepared and qemu invoked. >

2 1

[libvirt PATCH v2 REBASED 0/7] qemu: introduce amd-iommu support
by Ján Tomko 23 Jun '25

23 Jun '25

Ján Tomko (7): qemu: introduce QEMU_CAPS_AMD_IOMMU qemu: introduce QEMU_CAPS_PCI_ID qemu: add IOMMU model amd docs: formatdomain: document intel-only IOMMU attributes conf: add passthrough and xtsup attributes for IOMMU conf: reject some attributes not applicable to intel IOMMU qemu: format pt and xstup on the command line docs/formatdomain.rst | 22 +++- src/conf/domain_conf.c | 31 +++++ src/conf/domain_conf.h | 3 + src/conf/domain_validate.c | 22 ++++ src/conf/schemas/domaincommon.rng | 11 ++ src/qemu/qemu_capabilities.c | 12 ++ src/qemu/qemu_capabilities.h | 4 + src/qemu/qemu_command.c | 30 +++++ src/qemu/qemu_domain_address.c | 4 + src/qemu/qemu_validate.c | 22 ++++ .../caps_10.0.0_x86_64+amdsev.replies | 102 +++++++++++------ .../caps_10.0.0_x86_64+amdsev.xml | 1 + .../caps_10.0.0_x86_64.replies | 106 ++++++++++++------ .../caps_10.0.0_x86_64.xml | 2 + .../caps_6.2.0_x86_64.replies | 102 +++++++++++------ .../caps_6.2.0_x86_64.xml | 1 + .../caps_7.0.0_x86_64.replies | 80 +++++++------ .../caps_7.0.0_x86_64.xml | 1 + .../caps_7.1.0_x86_64.replies | 102 +++++++++++------ .../caps_7.1.0_x86_64.xml | 1 + .../caps_7.2.0_x86_64+hvf.replies | 102 +++++++++++------ .../caps_7.2.0_x86_64+hvf.xml | 1 + .../caps_7.2.0_x86_64.replies | 102 +++++++++++------ .../caps_7.2.0_x86_64.xml | 1 + .../caps_8.0.0_x86_64.replies | 80 +++++++------ .../caps_8.0.0_x86_64.xml | 1 + .../caps_8.1.0_x86_64.replies | 102 +++++++++++------ .../caps_8.1.0_x86_64.xml | 1 + .../caps_8.2.0_x86_64.replies | 102 +++++++++++------ .../caps_8.2.0_x86_64.xml | 1 + .../caps_9.0.0_x86_64.replies | 80 +++++++------ .../caps_9.0.0_x86_64.xml | 1 + .../caps_9.1.0_x86_64.replies | 102 +++++++++++------ .../caps_9.1.0_x86_64.xml | 1 + .../caps_9.2.0_x86_64+amdsev.replies | 102 +++++++++++------ .../caps_9.2.0_x86_64+amdsev.xml | 1 + .../caps_9.2.0_x86_64.replies | 102 +++++++++++------ .../caps_9.2.0_x86_64.xml | 1 + .../amd-iommu.x86_64-latest.args | 35 ++++++ .../amd-iommu.x86_64-latest.xml | 1 + tests/qemuxmlconfdata/amd-iommu.xml | 39 +++++++ tests/qemuxmlconftest.c | 2 + 42 files changed, 1165 insertions(+), 454 deletions(-) create mode 100644 tests/qemuxmlconfdata/amd-iommu.x86_64-latest.args create mode 120000 tests/qemuxmlconfdata/amd-iommu.x86_64-latest.xml create mode 100644 tests/qemuxmlconfdata/amd-iommu.xml -- 2.49.0

2 14

[PATCH] util: workaround libxml2 lack of thread safe initialization
by Daniel P. Berrangé 23 Jun '25

23 Jun '25

From: Daniel P. Berrangé <berrange(a)redhat.com> The main XML parser code global initializer historically had a mutex protecting it, and more recently uses a pthread_once. The RelaxNG code, however, relies on three other global initializers that are not thread safe, just relying on setting an integer "initialized" flag. Calling the relevant initializers from libvirt in a protected global initializer will protect libvirt's own concurrent usage, however, it cannot protect against other libraries loaded in process that might be using libxml2's schema code. Fortunately: * The chances of other loaded non-libvirt code using libxml is relatively low * The chances of other loaded non-libvirt code using the schema validation / catalog functionality inside libxml is even lower * The chances of both libvirt and the non-libvirt usage having their *1st* usage of libxml2 be concurrent is tiny IOW, in practice, although our solution doesn't fully fix the thread safety, it is good enough. libxml2 should none the less still be fixed to make its global initializers be thread safe without special actions by its API consumers. Resolves: https://gitlab.com/libvirt/libvirt/-/issues/788 Signed-off-by: Daniel P. Berrangé <berrange(a)redhat.com> --- src/util/virxml.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/src/util/virxml.c b/src/util/virxml.c index 9d46e5f32f..c2d5a109dc 100644 --- a/src/util/virxml.c +++ b/src/util/virxml.c @@ -26,6 +26,8 @@ #include <libxml/xmlsave.h> #include <libxml/xpathInternals.h> +#include <libxml/xmlschemastypes.h> +#include <libxml/catalog.h> #include "virerror.h" #include "virxml.h" @@ -35,6 +37,7 @@ #include "virstring.h" #include "virutil.h" #include "viruuid.h" +#include "virthread.h" #include "configmake.h" #define VIR_FROM_THIS VIR_FROM_XML @@ -50,6 +53,25 @@ struct virParserData { }; +static int virXMLSchemaOnceInit(void) +{ + if (xmlSchemaInitTypes() < 0) { + virReportError(VIR_ERR_INTERNAL_ERROR, + _("Unable to initialize libxml2 schema types")); + return -1; + } + if (xmlRelaxNGInitTypes() < 0) { + virReportError(VIR_ERR_INTERNAL_ERROR, + _("Unable to initialize libxml2 RelaxNG data")); + return -1; + } + /* No return value, it just ignores errors :-( */ + xmlInitializeCatalog(); + return 0; +} + +VIR_ONCE_GLOBAL_INIT(virXMLSchema); + static xmlXPathContextPtr virXMLXPathContextNew(xmlDocPtr xml) { @@ -1603,6 +1625,9 @@ virXMLValidatorInit(const char *schemafile) { g_autoptr(virXMLValidator) validator = NULL; + if (virXMLSchemaInitialize() < 0) + return NULL; + validator = g_new0(virXMLValidator, 1); validator->schemafile = g_strdup(schemafile); -- 2.49.0

2 3

[PATCH] NEWS: mention console type in domain capabilities
by Roman Bogorodskiy 20 Jun '25

20 Jun '25

Signed-off-by: Roman Bogorodskiy <bogorodskiy(a)gmail.com> --- NEWS.rst | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/NEWS.rst b/NEWS.rst index 7d7df72a50..184df16547 100644 --- a/NEWS.rst +++ b/NEWS.rst @@ -47,6 +47,17 @@ v11.5.0 (unreleased) * **Improvements** + * Include supported console types in domain capabilities + + Domain capabilities now include information about supported console types, such as:: + + <console supported='yes'> + <enum name='type'> + <value>pty</value> + <value>tcp</value> + </enum> + </console> + * **Bug fixes** -- 2.49.0

2 1

[PATCH] qemu: Remove redundant kvm group config in sysusers.d
by fossdd 19 Jun '25

19 Jun '25

It's already defined by default in systemd: https://github.com/systemd/systemd/blob/v257.6/sysusers.d/basic.conf.in#L32 Adding it again here in libvirt-qemu.sysusers.conf causes the following warning by validating it with sd-sysuers: /usr/lib/sysusers.d/libvirt-qemu.conf:1: Conflict with earlier configuration for group 'kvm' in /usr/lib/sysusers.d/basic.conf:32, ignoring line. I don't know if the GID is important, but from simple grepping around it doesn't seem that way. Signed-off-by: fossdd <fossdd(a)pwned.life> --- src/qemu/libvirt-qemu.sysusers.conf | 1 - 1 file changed, 1 deletion(-) diff --git a/src/qemu/libvirt-qemu.sysusers.conf b/src/qemu/libvirt-qemu.sysusers.conf index 3189191e73..05c35f94d8 100644 --- a/src/qemu/libvirt-qemu.sysusers.conf +++ b/src/qemu/libvirt-qemu.sysusers.conf @@ -1,4 +1,3 @@ -g kvm 36 g qemu 107 u qemu 107:qemu "qemu user" - - m qemu kvm -- 2.50.0

1 0

[PATCH 0/2] qemu: prefer GICv3 on TCG ARM VMs
by Heinrich Schuchardt 19 Jun '25

19 Jun '25

Emulating ARM machines with more than 8 CPUs requires GICv3. Currently libvirt defaults to GICv2 on TCG emulated VMs. This due to a deficiency existing in QEMU in 2017. There are no issues running virtual machine with <features> <gic version='3'/> </features> using current QEMU. Heinrich Schuchardt (2): tests: use virt-6.2 for aarch64 TCG qemu: prefer GICv3 on TCG ARM VMs src/qemu/qemu_postparse.c | 14 ------- ...fault-cpu-tcg-virt-4.2.aarch64-latest.args | 36 ---------------- ...efault-cpu-tcg-virt-4.2.aarch64-latest.xml | 42 ------------------- .../aarch64-default-cpu-tcg-virt-4.2.xml | 20 --------- ...fault-cpu-tcg-virt-6.2.aarch64-latest.args | 36 ++++++++++++++++ ...efault-cpu-tcg-virt-6.2.aarch64-latest.xml | 42 +++++++++++++++++++ .../aarch64-default-cpu-tcg-virt-6.2.xml | 20 +++++++++ .../aarch64-gic-none-tcg.aarch64-latest.args | 2 +- .../aarch64-gic-none-tcg.aarch64-latest.xml | 2 +- .../aarch64-pci-serial.aarch64-latest.args | 2 +- .../aarch64-pci-serial.aarch64-latest.xml | 2 +- ...arch64-traditional-pci.aarch64-latest.args | 2 +- ...aarch64-traditional-pci.aarch64-latest.xml | 2 +- ...aarch64-usb-controller.aarch64-latest.args | 2 +- .../aarch64-usb-controller.aarch64-latest.xml | 2 +- .../aarch64-video-default.aarch64-latest.args | 2 +- .../aarch64-video-default.aarch64-latest.xml | 2 +- ...4-video-virtio-gpu-pci.aarch64-latest.args | 2 +- ...64-video-virtio-gpu-pci.aarch64-latest.xml | 2 +- ...ault-models.aarch64-latest.abi-update.args | 2 +- ...fault-models.aarch64-latest.abi-update.xml | 2 +- ...64-virt-default-models.aarch64-latest.args | 2 +- ...h64-virt-default-models.aarch64-latest.xml | 2 +- ...rch64-virt-default-nic.aarch64-latest.args | 2 +- ...arch64-virt-default-nic.aarch64-latest.xml | 2 +- .../aarch64-virt-graphics.aarch64-latest.args | 2 +- .../aarch64-virt-graphics.aarch64-latest.xml | 2 +- ...h64-virt-headless-mmio.aarch64-latest.args | 2 +- ...ch64-virt-headless-mmio.aarch64-latest.xml | 2 +- .../aarch64-virt-headless.aarch64-latest.args | 2 +- .../aarch64-virt-headless.aarch64-latest.xml | 2 +- ...irt-minimal.aarch64-latest.abi-update.args | 2 +- ...virt-minimal.aarch64-latest.abi-update.xml | 2 +- .../aarch64-virt-minimal.aarch64-latest.args | 2 +- .../aarch64-virt-minimal.aarch64-latest.xml | 2 +- .../aarch64-virt-virtio.aarch64-latest.args | 2 +- .../aarch64-virt-virtio.aarch64-latest.xml | 2 +- ...o-pci-manual-addresses.aarch64-latest.args | 2 +- ...io-pci-manual-addresses.aarch64-latest.xml | 2 +- .../balloon-mmio-deflate.aarch64-latest.args | 2 +- .../balloon-mmio-deflate.aarch64-latest.xml | 2 +- .../cpu-topology5.aarch64-latest.args | 2 +- .../cpu-topology5.aarch64-latest.xml | 2 +- ...efi-aarch64.aarch64-latest.abi-update.args | 2 +- ...-efi-aarch64.aarch64-latest.abi-update.xml | 2 +- ...mware-auto-efi-aarch64.aarch64-latest.args | 2 +- ...rmware-auto-efi-aarch64.aarch64-latest.xml | 2 +- ...-loader-raw.aarch64-latest.abi-update.args | 2 +- ...t-loader-raw.aarch64-latest.abi-update.xml | 2 +- ...-efi-format-loader-raw.aarch64-latest.args | 2 +- ...o-efi-format-loader-raw.aarch64-latest.xml | 2 +- ...i-aarch64-legacy-paths.aarch64-latest.args | 2 +- ...fi-aarch64-legacy-paths.aarch64-latest.xml | 2 +- ...anual-efi-acpi-aarch64.aarch64-latest.args | 2 +- ...manual-efi-acpi-aarch64.aarch64-latest.xml | 2 +- ...ual-efi-noacpi-aarch64.aarch64-latest.args | 2 +- ...nual-efi-noacpi-aarch64.aarch64-latest.xml | 2 +- ...l-noefi-noacpi-aarch64.aarch64-latest.args | 2 +- ...al-noefi-noacpi-aarch64.aarch64-latest.xml | 2 +- .../iommu-smmuv3.aarch64-latest.args | 2 +- .../iommu-smmuv3.aarch64-latest.xml | 2 +- ...ch-virt-console-native.aarch64-latest.args | 2 +- ...ach-virt-console-native.aarch64-latest.xml | 2 +- ...ch-virt-console-virtio.aarch64-latest.args | 2 +- ...ach-virt-console-virtio.aarch64-latest.xml | 2 +- ...-serial+console-native.aarch64-latest.args | 2 +- ...t-serial+console-native.aarch64-latest.xml | 2 +- ...ach-virt-serial-compat.aarch64-latest.args | 2 +- ...mach-virt-serial-compat.aarch64-latest.xml | 2 +- ...ach-virt-serial-native.aarch64-latest.args | 2 +- ...mach-virt-serial-native.aarch64-latest.xml | 2 +- .../mach-virt-serial-pci.aarch64-latest.args | 2 +- .../mach-virt-serial-pci.aarch64-latest.xml | 2 +- .../mach-virt-serial-usb.aarch64-latest.args | 2 +- .../mach-virt-serial-usb.aarch64-latest.xml | 2 +- ...e-expander-bus-aarch64.aarch64-latest.args | 2 +- ...ie-expander-bus-aarch64.aarch64-latest.xml | 2 +- .../pcihole64-virt.aarch64-latest.args | 2 +- .../pcihole64-virt.aarch64-latest.xml | 2 +- .../pvpanic-pci-aarch64.aarch64-latest.args | 2 +- .../pvpanic-pci-aarch64.aarch64-latest.xml | 2 +- ...pci-no-address-aarch64.aarch64-latest.args | 2 +- ...-pci-no-address-aarch64.aarch64-latest.xml | 2 +- .../virtio-iommu-aarch64.aarch64-latest.args | 2 +- .../virtio-iommu-aarch64.aarch64-latest.xml | 2 +- tests/qemuxmlconftest.c | 2 +- 86 files changed, 177 insertions(+), 191 deletions(-) delete mode 100644 tests/qemuxmlconfdata/aarch64-default-cpu-tcg-virt-4.2.aarch64-latest.args delete mode 100644 tests/qemuxmlconfdata/aarch64-default-cpu-tcg-virt-4.2.aarch64-latest.xml delete mode 100644 tests/qemuxmlconfdata/aarch64-default-cpu-tcg-virt-4.2.xml create mode 100644 tests/qemuxmlconfdata/aarch64-default-cpu-tcg-virt-6.2.aarch64-latest.args create mode 100644 tests/qemuxmlconfdata/aarch64-default-cpu-tcg-virt-6.2.aarch64-latest.xml create mode 100644 tests/qemuxmlconfdata/aarch64-default-cpu-tcg-virt-6.2.xml -- 2.48.1

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