diff options
| author | Christian Krinitsin <mail@krinitsin.com> | 2025-06-03 12:04:13 +0000 |
|---|---|---|
| committer | Christian Krinitsin <mail@krinitsin.com> | 2025-06-03 12:04:13 +0000 |
| commit | 256709d2eb3fd80d768a99964be5caa61effa2a0 (patch) | |
| tree | 05b2352fba70923126836a64b6a0de43902e976a /results/classifier/105/device/2794 | |
| parent | 2ab14fa96a6c5484b5e4ba8337551bb8dcc79cc5 (diff) | |
| download | emulator-bug-study-256709d2eb3fd80d768a99964be5caa61effa2a0.tar.gz emulator-bug-study-256709d2eb3fd80d768a99964be5caa61effa2a0.zip | |
add new classifier result
Diffstat (limited to 'results/classifier/105/device/2794')
| -rw-r--r-- | results/classifier/105/device/2794 | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/results/classifier/105/device/2794 b/results/classifier/105/device/2794 new file mode 100644 index 00000000..b0640a38 --- /dev/null +++ b/results/classifier/105/device/2794 @@ -0,0 +1,62 @@ +device: 0.881 +graphic: 0.825 +boot: 0.797 +instruction: 0.796 +other: 0.728 +vnc: 0.430 +semantic: 0.399 +network: 0.280 +assembly: 0.228 +mistranslation: 0.219 +socket: 0.202 +KVM: 0.067 + +qemu-system-m68k virt machine doesn't boot Linux kernels using 68020, 68030 and 68060 CPUs +Description of problem: +QEMU doesn't seem to be able to start Linux kernels using a CPU other than a 68040 (which does work fine) + +To rule out host issues, the issue is reproductible on Debian Unstable amd64 (with version QEMU emulator version 9.2.0)(Debian 1:9.2.0+ds-5)) + +To rule out cross-compilation issues, the kernel has been rebuild inside a virt machine (using a 68040 CPU), running Debian Unstable + +Each CPU model below gets stuck early before kernel boot during the ABCGHIJK thing. The Kernel doesn't seem to boot and QEMU process eat 100% of a CPU physical core + +**68020** +``` +qemu-system-m68k -M virt -cpu m68060 -m 1G -nographic -kernel /home/demik/tmp/vmlinux +ABCGH +``` + +**68030** +``` +qemu-system-m68k -M virt -cpu m68060 -m 1G -nographic -kernel /home/demik/tmp/vmlinux +ABC +``` + +**68060** +``` +qemu-system-m68k -M virt -cpu m68060 -m 1G -nographic -kernel /home/demik/tmp/vmlinux +ABC +``` +Steps to reproduce: +1. build a kernel with 68020/030/060 support (using virt_defconfig as base) +2. start QEMU with the command line above +Additional information: +68020 is understandable as it may need some sort of 68851 emulation. + +Relevant Kernel config Processor configuration: +``` +# +# Processor Type +# +CONFIG_M68KCLASSIC=y +# CONFIG_COLDFIRE is not set +CONFIG_M68020=y +CONFIG_M68030=y +CONFIG_M68040=y +CONFIG_M68060=y +``` + +This may be related to the following issues (but I don't have the skillset to confirm that) +- https://gitlab.com/qemu-project/qemu/-/issues/2091 +- https://gitlab.com/qemu-project/qemu/-/issues/2500 |