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Diffstat (limited to 'results/classifier/mode-deepseek-r1:32b/reasoning/system/1201446')
| -rw-r--r-- | results/classifier/mode-deepseek-r1:32b/reasoning/system/1201446 | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/results/classifier/mode-deepseek-r1:32b/reasoning/system/1201446 b/results/classifier/mode-deepseek-r1:32b/reasoning/system/1201446 new file mode 100644 index 000000000..aeeacf082 --- /dev/null +++ b/results/classifier/mode-deepseek-r1:32b/reasoning/system/1201446 @@ -0,0 +1,17 @@ +<think> +Okay, so I need to figure out whether this QEMU bug is user-mode or system-mode related. Let me start by understanding the problem. + +The issue is that when using QEMU with the -cpu=486 option, it's allowing instructions like CMOV which aren't supported on real i486 hardware. The user provided a test program where compiling for i486 shouldn't include CMOV, but in QEMU, it does execute without error, whereas on actual hardware, it throws an illegal instruction. + +So the bug is that QEMU isn't enforcing CPU instruction limitations correctly when emulating older CPUs. It's letting through instructions that should be invalid, like CMOV which came much later than i486. + +Now, thinking about how QEMU works: user-mode emulation runs applications without a full OS layer, while system-mode includes the entire virtualized environment, including peripherals and device drivers. + +In this case, the problem is with CPU instruction support. The CPU in QEMU isn't accurately reflecting the capabilities of an i486 when instructed to do so via -cpu=486. This seems like a lower-level issue because it's about how the virtual CPU handles instructions. + +So, since it's related to the virtual CPU's ability to execute or block certain instructions correctly, this would fall under system-mode because it involves the core CPU emulation and instruction set support, which are part of the virtualized hardware environment provided by QEMU in system-mode. +</think> + +The bug is related to how QEMU emulates the CPU's instruction set, specifically allowing unsupported instructions when targeting older CPUs. This pertains to the virtualization of hardware features. + +system \ No newline at end of file |