Re: Using perf to access hardware events in pre-launched VM


Paolo Crotti
 

Hi Minggui,

Thanks for the quick answer. With my original scenario, I tried rdmsr 0x186 and it returned rdmsr(0x186):0x0. Is it ok?

Then I modified the scenario and i get a lot of errors:

First I changed the <vm_type> PRE_STD_VM to RTVM, then run make hypervisor and I got this error:

make[1]: ingresso nella directory «/home/paoloc/acrn-work/acrn-hypervisor/hypervisor»
Board XML is fetched from /home/paoloc/acrn-work/my_board.xml
Scneario XML is configuration fetched from /home/paoloc/acrn-work/notPartitioned-EnablePMU.xml
/home/paoloc/acrn-work/acrn-hypervisor/build/hypervisor/configs/allocation.xml generated
/home/paoloc/acrn-work/acrn-hypervisor/build/hypervisor/configs/unified.xml generated
/home/paoloc/acrn-work/acrn-hypervisor/build/hypervisor/configs/config.mk generated
Traceback (most recent call last):
  File "/home/paoloc/acrn-work/acrn-hypervisor/hypervisor/../misc/config_tools/board_config/board_cfg_gen.py", line 137, in <module>
    err_dic = main(ARGS)
  File "/home/paoloc/acrn-work/acrn-hypervisor/hypervisor/../misc/config_tools/board_config/board_cfg_gen.py", line 95, in main
    err_dic = board_info_h.generate_file(config)
  File "/home/paoloc/acrn-work/acrn-hypervisor/misc/config_tools/board_config/board_info_h.py", line 96, in generate_file
    scenario_cfg_lib.VM_DB[common.VM_TYPES[0]]['load_type'] == "PRE_LAUNCHED_VM"
KeyError: 'RTVM'
make[1]: uscita dalla directory «/home/paoloc/acrn-work/acrn-hypervisor/hypervisor»
make -C /home/paoloc/acrn-work/acrn-hypervisor/hypervisor BOARD=/home/paoloc/acrn-work/my_board.xml SCENARIO=/home/paoloc/acrn-work/notPartitioned-EnablePMU.xml HV_OBJDIR=/home/paoloc/acrn-work/acrn-hypervisor/build/hypervisor RELEASE=
make[1]: ingresso nella directory «/home/paoloc/acrn-work/acrn-hypervisor/hypervisor»
/home/paoloc/acrn-work/acrn-hypervisor/build/hypervisor/include/config.h generated
Start pre-build static check ...
make -C ../misc/hv_prebuild BOARD=my_board SCENARIO=partitioned_CAT TARGET_DIR=/home/paoloc/acrn-work/acrn-hypervisor/build/hypervisor/configs
make[2]: ingresso nella directory «/home/paoloc/acrn-work/acrn-hypervisor/misc/hv_prebuild»
make[2]: ***  Nessuna regola per generare l'obiettivo «/home/paoloc/acrn-work/acrn-hypervisor/build/hypervisor/configs/scenarios/partitioned_CAT/vm_configurations.c», necessario per «default».  Arresto.
make[2]: uscita dalla directory «/home/paoloc/acrn-work/acrn-hypervisor/misc/hv_prebuild»
make[1]: *** [Makefile:413: pre_build] Errore 2
make[1]: uscita dalla directory «/home/paoloc/acrn-work/acrn-hypervisor/hypervisor»
make: *** [Makefile:109: hypervisor] Errore 2

Then if I add this line <load_order>PRE_LAUNCHED_VM</load_order>, I get a different error:

make[1]: ingresso nella directory «/home/paoloc/acrn-work/acrn-hypervisor/hypervisor»
Board XML is fetched from /home/paoloc/acrn-work/my_board.xml
Scneario XML is configuration fetched from /home/paoloc/acrn-work/notPartitioned-EnablePMU.xml
/home/paoloc/acrn-work/acrn-hypervisor/build/hypervisor/configs/allocation.xml generated
/home/paoloc/acrn-work/acrn-hypervisor/build/hypervisor/configs/unified.xml generated
/home/paoloc/acrn-work/acrn-hypervisor/build/hypervisor/configs/config.mk generated
Board configurations for my_board is generated successfully.
Error: Scenario xml file validation failed:
Error: vm:id=0: 'vm:id=0' Unexpected child with tag 'load_order' at position 2. Tag (name | clos | priority | legacy_vuart | console_vuart | communication_vuart) expected.: last call: <Element 'vm' at 0x7fd0629775e0>
Error: vm:id=1: 'vm:id=1' Unexpected child with tag 'load_order' at position 2. Tag (name | clos | priority | legacy_vuart | console_vuart | communication_vuart) expected.: last call: <Element 'vm' at 0x7fd06297b6d0>
make[1]: uscita dalla directory «/home/paoloc/acrn-work/acrn-hypervisor/hypervisor»
make -C /home/paoloc/acrn-work/acrn-hypervisor/hypervisor BOARD=/home/paoloc/acrn-work/my_board.xml SCENARIO=/home/paoloc/acrn-work/notPartitioned-EnablePMU.xml HV_OBJDIR=/home/paoloc/acrn-work/acrn-hypervisor/build/hypervisor RELEASE=
make[1]: ingresso nella directory «/home/paoloc/acrn-work/acrn-hypervisor/hypervisor»
/home/paoloc/acrn-work/acrn-hypervisor/build/hypervisor/include/config.h generated
Start pre-build static check ...
make -C ../misc/hv_prebuild BOARD=my_board SCENARIO=partitioned_CAT TARGET_DIR=/home/paoloc/acrn-work/acrn-hypervisor/build/hypervisor/configs
make[2]: ingresso nella directory «/home/paoloc/acrn-work/acrn-hypervisor/misc/hv_prebuild»
make[2]: ***  Nessuna regola per generare l'obiettivo «/home/paoloc/acrn-work/acrn-hypervisor/build/hypervisor/configs/scenarios/partitioned_CAT/vm_configurations.c», necessario per «default».  Arresto.
make[2]: uscita dalla directory «/home/paoloc/acrn-work/acrn-hypervisor/misc/hv_prebuild»
make[1]: *** [Makefile:413: pre_build] Errore 2
make[1]: uscita dalla directory «/home/paoloc/acrn-work/acrn-hypervisor/hypervisor»
make: *** [Makefile:109: hypervisor] Errore 2

And if I add <lapic_passthrough>y</lapic_passthrough>, I get another different error:

make[1]: ingresso nella directory «/home/paoloc/acrn-work/acrn-hypervisor/hypervisor»
Board XML is fetched from /home/paoloc/acrn-work/my_board.xml
Scneario XML is configuration fetched from /home/paoloc/acrn-work/notPartitioned-EnablePMU.xml
/home/paoloc/acrn-work/acrn-hypervisor/build/hypervisor/configs/allocation.xml generated
/home/paoloc/acrn-work/acrn-hypervisor/build/hypervisor/configs/unified.xml generated
/home/paoloc/acrn-work/acrn-hypervisor/build/hypervisor/configs/config.mk generated
Board configurations for my_board is generated successfully.
Error: Scenario xml file validation failed:
Error: vm:id=0: 'vm:id=0' Unexpected child with tag 'lapic_passthrough' at position 4.: last call: <Element 'vm' at 0x7fc2ef3a05e0>
Error: vm:id=1: 'vm:id=1' Unexpected child with tag 'lapic_passthrough' at position 4.: last call: <Element 'vm' at 0x7fc2ef3a4770>
make[1]: uscita dalla directory «/home/paoloc/acrn-work/acrn-hypervisor/hypervisor»
make -C /home/paoloc/acrn-work/acrn-hypervisor/hypervisor BOARD=/home/paoloc/acrn-work/my_board.xml SCENARIO=/home/paoloc/acrn-work/notPartitioned-EnablePMU.xml HV_OBJDIR=/home/paoloc/acrn-work/acrn-hypervisor/build/hypervisor RELEASE=
make[1]: ingresso nella directory «/home/paoloc/acrn-work/acrn-hypervisor/hypervisor»
/home/paoloc/acrn-work/acrn-hypervisor/build/hypervisor/include/config.h generated
Start pre-build static check ...
make -C ../misc/hv_prebuild BOARD=my_board SCENARIO=partitioned_CAT TARGET_DIR=/home/paoloc/acrn-work/acrn-hypervisor/build/hypervisor/configs
make[2]: ingresso nella directory «/home/paoloc/acrn-work/acrn-hypervisor/misc/hv_prebuild»
make[2]: ***  Nessuna regola per generare l'obiettivo «/home/paoloc/acrn-work/acrn-hypervisor/build/hypervisor/configs/scenarios/partitioned_CAT/vm_configurations.c», necessario per «default».  Arresto.
make[2]: uscita dalla directory «/home/paoloc/acrn-work/acrn-hypervisor/misc/hv_prebuild»
make[1]: *** [Makefile:413: pre_build] Errore 2
make[1]: uscita dalla directory «/home/paoloc/acrn-work/acrn-hypervisor/hypervisor»
make: *** [Makefile:109: hypervisor] Errore 2

Do you have any idea what the problem could be?

P.S. Attached my original scenario and the modified one.

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