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| author | Christian Krinitsin <mail@krinitsin.com> | 2025-07-03 07:27:52 +0000 |
|---|---|---|
| committer | Christian Krinitsin <mail@krinitsin.com> | 2025-07-03 07:27:52 +0000 |
| commit | d0c85e36e4de67af628d54e9ab577cc3fad7796a (patch) | |
| tree | f8f784b0f04343b90516a338d6df81df3a85dfa2 /results/classifier/deepseek-2-tmp/output/network/1745895 | |
| parent | 7f4364274750eb8cb39a3e7493132fca1c01232e (diff) | |
| download | emulator-bug-study-d0c85e36e4de67af628d54e9ab577cc3fad7796a.tar.gz emulator-bug-study-d0c85e36e4de67af628d54e9ab577cc3fad7796a.zip | |
add deepseek and gemma results
Diffstat (limited to 'results/classifier/deepseek-2-tmp/output/network/1745895')
| -rw-r--r-- | results/classifier/deepseek-2-tmp/output/network/1745895 | 30 |
1 files changed, 0 insertions, 30 deletions
diff --git a/results/classifier/deepseek-2-tmp/output/network/1745895 b/results/classifier/deepseek-2-tmp/output/network/1745895 deleted file mode 100644 index 4435943d..00000000 --- a/results/classifier/deepseek-2-tmp/output/network/1745895 +++ /dev/null @@ -1,30 +0,0 @@ - -Unable to migrate vhost-net to virtio-1.0-capable kernel - -I am running QEMU 2.11 (from upstream source, not Red Hat package) on stock RHEL 6 and RHEL 7 kernels. Only the RHEL 7 kernel supports VIRTIO_F_VERSION_1 in its vhost-net driver. - -When migrating a guest using vhost-net from the RHEL 6 host to RHEL 7, the PCI config is rejected by QEMU on the target machine. - -A simple test case: - -1. On the RHEL 7 host, prepare for an incoming migration: - - rhel7# qemu-system-x86_64 -S -accel kvm -nographic -monitor stdio -nodefaults -netdev tap,id=net0,vhost=on,script=no,downscript=no -device virtio-net-pci,netdev=net0,mac=54:52:00:ff:ff:ff -incoming tcp:0.0.0.0:12345 - -2. On the RHEL 6 host, start a guest and migrate it to the RHEL 7 host: - - rhel6# qemu-system-x86_64 -S -accel kvm -nographic -monitor stdio -nodefaults -netdev tap,id=net0,vhost=on,script=no,downscript=no -device virtio-net-pci,netdev=net0,mac=54:52:00:ff:ff:ff -QEMU 2.11.0 monitor - type 'help' for more information - (qemu) migrate tcp:rhel7:12345 - -The RHEL 7 QEMU errors out: - - qemu-system-x86_64: get_pci_config_device: Bad config data: i=0x20 read: 0 device: c cmask: ff wmask: 0 w1cmask:0 - qemu-system-x86_64: Failed to load PCIDevice:config - qemu-system-x86_64: Failed to load virtio-net:virtio - qemu-system-x86_64: error while loading state for instance 0x0 of device '0000:00:02.0/virtio-net' - qemu-system-x86_64: load of migration failed: Invalid argument - -If I start the source QEMU with vhost=off, or the target QEMU with disable-modern=true, the migration is successful. - -My hunch here is that the target QEMU prepares the PCI device to support VIRTIO_F_VERSION_1, as that's available in the kernel there, but then fails to (or does not know to) disable this during the migration.
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