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authorChristian Krinitsin <mail@krinitsin.com>2025-07-03 19:39:53 +0200
committerChristian Krinitsin <mail@krinitsin.com>2025-07-03 19:39:53 +0200
commitdee4dcba78baf712cab403d47d9db319ab7f95d6 (patch)
tree418478faf06786701a56268672f73d6b0b4eb239 /results/classifier/zero-shot/118/none/935
parent4d9e26c0333abd39bdbd039dcdb30ed429c475ba (diff)
downloademulator-bug-study-dee4dcba78baf712cab403d47d9db319ab7f95d6.tar.gz
emulator-bug-study-dee4dcba78baf712cab403d47d9db319ab7f95d6.zip
restructure results
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+semantic: 0.792
+graphic: 0.779
+network: 0.768
+performance: 0.754
+peripherals: 0.746
+architecture: 0.726
+PID: 0.721
+device: 0.708
+mistranslation: 0.707
+assembly: 0.698
+risc-v: 0.692
+debug: 0.687
+files: 0.685
+user-level: 0.679
+socket: 0.677
+register: 0.667
+kernel: 0.666
+vnc: 0.637
+arm: 0.630
+virtual: 0.629
+KVM: 0.608
+ppc: 0.600
+permissions: 0.581
+boot: 0.567
+VMM: 0.547
+hypervisor: 0.529
+x86: 0.453
+TCG: 0.424
+i386: 0.413
+
+insert ivshmem device into pci-bridge, but vm network disconnects
+Description of problem:
+To extend PCI slot number in Windows vm, a new pci-bridge is created in Windows vm as bus.1. But when I insert a ivshmem file in host to this pci-bridge(bus.1), the Windows vm disconnects(lose remote desktop connection).
+Steps to reproduce:
+1. add new pci-bridge into windows vm, add windows vm xml configuration like this:
+```xml
+<devices>
+ <controller type='pci' index='0' model='pci-root'/>
+ <controller type='pci' index='1' model='pci-bridge'>
+ <address type='pci' domain='0' bus='0' slot='0x0d' function='0' multifunction='off'/>
+ </controller>
+</devices>
+```
+
+2.restart this Windows vm, new pci-bridge has been created, its name is pci.1 and bus is bus.1:
+```sh
+$ virsh qemu-monitor-command --hmp --domain 56 --cmd info pci
+ Bus 0, device 13, function 0:
+ PCI bridge: PCI device 1b36:0001
+ IRQ 10.
+ BUS 0.
+ secondary bus 1.
+ subordinate bus 1.
+ IO range [0xc000, 0xcfff]
+ memory range [0xfe000000, 0xfe1fffff]
+ prefetchable memory range [0xe4000000, 0xe41fffff]
+ BAR0: 64 bit memory at 0xfe422000 [0xfe4220ff].
+ id "pci.1"
+```
+3. create a shm file `/dev/shm/test1` in host using `shm_open()`, size is 32M
+
+4. create new object:
+```sh
+virsh qemu-monitor-command --hmp --domain 56 --cmd object_add memory-backend-file,share=on,id=objtest1,size=32M,mem-path=/dev/shm/test1
+```
+
+5. insert this ivshmem file into new pci-bridge and use bus.1 slot number(1:1.0):
+```sh
+virsh qemu-monitor-command --hmp --domain 56 --cmd device_add ivshmem-plain,memdev=objtest1,id=test1,bus=pci.1,addr=0x01.0x00
+```
+
+6. After inserting this ivshmem file into new pci-bridge, the remote desktop connection of this windows vm disconnects.
+
+7. New ivshmem file has been created:
+```
+$ virsh qemu-monitor-command --hmp --domain 57 --cmd info pci
+ Bus 1, device 1, function 0:
+ RAM controller: PCI device 1af4:1110
+ BAR0: 32 bit memory at 0xfe1fff00 [0xfe1fffff].
+ BAR2: 64 bit prefetchable memory at 0x4bc000000 [0x4bfffffff].
+ id "test1"
+
+```
+Additional information:
+When insert ivshmem file into bus.1(pci-bridge), the remote desktop connection of Windows vm is sometimes disconnected, and sometimes it is normal.
+
+The newly added ivshmem device can be found in the device manager of the Windows vm, but sometimes it cannot be found.
+
+Thanks for your help!