diff options
Diffstat (limited to 'results/classifier/gemma3:12b/kvm/1916112')
| -rw-r--r-- | results/classifier/gemma3:12b/kvm/1916112 | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/results/classifier/gemma3:12b/kvm/1916112 b/results/classifier/gemma3:12b/kvm/1916112 new file mode 100644 index 00000000..1c7d1636 --- /dev/null +++ b/results/classifier/gemma3:12b/kvm/1916112 @@ -0,0 +1,60 @@ + +Illegal instruction crash of QEMU on Jetson Nano + +I have a jetson nano (arm64 SBC) and I want to check the native emulation performance of Raspbian Buster. I used the info available here: + +https://github.com/dhruvvyas90/qemu-rpi-kernel/tree/master/native-emuation + +I have Xubuntut 20.04 with KVM enabled kernel running on the Jetson Nano + +However QEMU crashes with "Illegal Instruction" during kernel boot. I have a built latest QEMU from sources with following configuration + +./configure --prefix=/usr/local --target-list=aarch64-softmmu,arm-softmmu --enable-guest-agent --enable-vnc --enable-vnc-jpeg --enable-vnc-png --enable-kvm --enable-spice --enable-sdl --enable-gtk --enable-virglrenderer --enable-opengl + +qemu-system-aarch64 --version +QEMU emulator version 5.2.50 (v5.2.0-1731-g5b19cb63d9) + +When I run as follows: + +../build/qemu-system-aarch64 -M raspi3 +-append "rw earlyprintk loglevel=8 console=ttyAMA0,115200 dwc_otg.lpm_enable=0 root=/dev/mmcblk0p2 rootdelay=1" +-dtb ./bcm2710-rpi-3-b-plus.dtb +-sd /media/96747D21747D0571/JetsonNano/2020-08-20-raspios-buster-armhf-full.qcow2 +-kernel ./kernel8.img +-m 1G -smp 4 -serial stdio -usb -device usb-mouse -device usb-kbd + +I get : +[ 74.994834] systemd[1]: Condition check resulted in FUSE Control File System being skipped. +[ 76.281274] systemd[1]: Starting Apply Kernel Variables... +Starting Apply Kernel Variables... +Illegal instruction (core dumped) + +When I use GDB I see this: + +Thread 8 "qemu-system-aar" received signal SIGILL, Illegal instruction. +[Switching to Thread 0x7fad7f9ba0 (LWP 28037)] +0x0000007f888ac690 in code_gen_buffer () +(gdb) bt +#0 0x0000007f888ac690 in code_gen_buffer () +#1 0x0000005555d7c038 in cpu_tb_exec (tb_exit=, itb=, cpu=0x7fb4502c40) +at ../accel/tcg/cpu-exec.c:191 +#2 cpu_loop_exec_tb (tb_exit=, last_tb=, tb=, cpu=0x7fb4502c40) +at ../accel/tcg/cpu-exec.c:708 +#3 cpu_exec (cpu=cpu@entry=0x7fb4502c40) at ../accel/tcg/cpu-exec.c:819 +.. + +I have just two questions: + +Is this a problem with QEMU or is there anything specific build or options I need to use. Any specific version of QEMU should be used ? + +Why is TCG used as the accelerator when KVM is present. Is it possible and how to use KVM ? + +If I enabled the KVM then I get this error: + +../build/qemu-system-aarch64 -M raspi3 -enable-kvm -append "rw earlyprintk loglevel=8 console=ttyAMA0,115200 dwc_otg.lpm_enable=0 root=/dev/mmcblk0p2 rootdelay=1" -dtb ./bcm2710-rpi-3-b-plus.dtb -sd /media/96747D21747D0571/JetsonNano/2020-08-20-raspios-buster-armhf-full.qcow2 -kernel ./kernel8.img -m 1G -smp 4 -serial stdio -usb -device usb-mouse -device usb-kbd +WARNING: Image format was not specified for '/media/96747D21747D0571/JetsonNano/2020-08-20-raspios-buster-armhf-full.img' and probing guessed raw. + Automatically detecting the format is dangerous for raw images, write operations on block 0 will be restricted. + Specify the 'raw' format explicitly to remove the restrictions. +qemu-system-aarch64: ../softmmu/physmem.c:750: cpu_address_space_init: Assertion `asidx == 0 || !kvm_enabled()' failed. + +Thanks a lot. \ No newline at end of file |