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df2ef2e706
When a thread-context object is specified on the cmd line, then QEMU spawns a thread and sets its affinity to the list of NUMA nodes specified in .node-affinity attribute. And this works just fine, until the main QEMU thread itself is not restricted. Because of v5.3.0-rc1~18 we restrict the main emulator thread even before QEMU is executed and thus then it tries to set affinity of a thread-context thread, it inevitably fails with: Setting CPU affinity failed: Invalid argument Now, we could lift the pinning temporarily, let QEMU spawn all thread-context threads, and enforce pinning again, but that would require some form of communication with QEMU (maybe -preconfig?). But that would still be wrong, because it would circumvent <emulatorpin/>. Technically speaking, thread-context is an internal implementation detail of QEMU, and if it weren't for it, the main emulator thread would be doing the allocation. Therefore, we should honor the pinning and prune the list of node so that inaccessible ones are dropped. Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=2154750 Signed-off-by: Michal Privoznik <mprivozn@redhat.com> Reviewed-by: Kristina Hanicova <khanicov@redhat.com> Reviewed-by: Andrea Bolognani <abologna@redhat.com>
43 lines
2.3 KiB
Plaintext
43 lines
2.3 KiB
Plaintext
LC_ALL=C \
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PATH=/bin \
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HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1 \
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USER=test \
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LOGNAME=test \
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XDG_DATA_HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/.local/share \
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XDG_CACHE_HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/.cache \
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XDG_CONFIG_HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/.config \
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/usr/bin/qemu-system-x86_64 \
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-name guest=QEMUGuest1,debug-threads=on \
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-S \
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-object '{"qom-type":"secret","id":"masterKey0","format":"raw","file":"/var/lib/libvirt/qemu/domain--1-QEMUGuest1/master-key.aes"}' \
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-machine pc,usb=off,dump-guest-core=off,acpi=off \
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-accel tcg \
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-cpu qemu64 \
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-m size=219136k,slots=16,maxmem=1099511627776k \
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-overcommit mem-lock=off \
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-smp 2,sockets=2,dies=1,cores=1,threads=1 \
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-object '{"qom-type":"memory-backend-ram","id":"ram-node0","size":224395264}' \
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-numa node,nodeid=0,cpus=0-1,memdev=ram-node0 \
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-uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
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-display none \
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-no-user-config \
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-nodefaults \
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-chardev socket,id=charmonitor,fd=1729,server=on,wait=off \
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-mon chardev=charmonitor,id=monitor,mode=control \
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-rtc base=utc \
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-no-shutdown \
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-boot strict=on \
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-device '{"driver":"piix3-usb-uhci","id":"usb","bus":"pci.0","addr":"0x1.0x2"}' \
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-object '{"qom-type":"thread-context","id":"tc-memdimm0","node-affinity":[1,2]}' \
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-object '{"qom-type":"memory-backend-file","id":"memdimm0","mem-path":"/dev/hugepages2M/libvirt/qemu/-1-QEMUGuest1","prealloc":true,"size":536870912,"host-nodes":[1,2,3],"policy":"bind","prealloc-context":"tc-memdimm0"}' \
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-device '{"driver":"pc-dimm","node":0,"memdev":"memdimm0","id":"dimm0","slot":0,"addr":4294967296}' \
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-object '{"qom-type":"memory-backend-ram","id":"memdimm2","size":536870912}' \
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-device '{"driver":"pc-dimm","node":0,"memdev":"memdimm2","id":"dimm2","slot":2}' \
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-blockdev '{"driver":"host_device","filename":"/dev/HostVG/QEMUGuest1","node-name":"libvirt-1-storage","auto-read-only":true,"discard":"unmap"}' \
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-blockdev '{"node-name":"libvirt-1-format","read-only":false,"driver":"raw","file":"libvirt-1-storage"}' \
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-device '{"driver":"ide-hd","bus":"ide.0","unit":0,"drive":"libvirt-1-format","id":"ide0-0-0","bootindex":1}' \
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-audiodev '{"id":"audio1","driver":"none"}' \
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-device '{"driver":"virtio-balloon-pci","id":"balloon0","bus":"pci.0","addr":"0x2"}' \
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-sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny \
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-msg timestamp=on
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