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Diffstat (limited to 'results/classifier/deepseek-r1:14b/reasoning/manual-review/964')
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diff --git a/results/classifier/deepseek-r1:14b/reasoning/manual-review/964 b/results/classifier/deepseek-r1:14b/reasoning/manual-review/964 new file mode 100644 index 000000000..100e09557 --- /dev/null +++ b/results/classifier/deepseek-r1:14b/reasoning/manual-review/964 @@ -0,0 +1,21 @@ +<think> +Okay, I'm trying to figure out how to classify this bug report for QEMU. The user provided a detailed description of the issue they're encountering. Let me read through it carefully. + +So, the problem is that an arm64 defconfig kernel (version 4.14.275) no longer boots after implementing FEAT_LPA in TCG. They noticed this after a specific commit: 7a928f43d8724bdf0777d7fc67a5ad973a0bf4bf. Before that commit, at 0af312b6edd231e1c8d0dec12494a80bc39ac761, it worked fine. They did a bisect and found the first bad commit as the one implementing FEAT_LPA. + +The user is asking if this behavior is expected given the kernel's age or if there's something else wrong. They also mention that a newer kernel (4.19.237) boots fine with -cpu max, but older ones might need specific CPU types like cortex-a72. + +Looking at the categories provided: mistranslation, assembly, other, device, graphic, etc., I need to determine which fits best. + +FEAT_LPA is an ARM feature related to Large Physical Addressing. Implementing this in QEMU's target/arm code would involve changes in how the CPU handles addresses. If the kernel doesn't support LPA or FEAT_LPA, it might cause boot issues because the CPU being emulated now has features the kernel isn't expecting. + +The bug is likely due to the QEMU code making the CPU report a feature that the old kernel doesn't handle, leading to a crash or failure during initialization. This sounds like an issue with how QEMU's translation layer (TCG) is handling the new feature, which might cause incorrect behavior in the emulated environment. + +The problem isn't about device emulation, graphics, or other hardware features directly. It's more about the CPU configuration and the interaction between the emulated CPU's features and the guest kernel's expectations. This falls under how QEMU translates instructions and manages CPU features for the virtual machine. + +Therefore, the most appropriate classification is 'mistranslation' because it relates to the translation layer (TCG) incorrectly handling a new CPU feature that affects the guest OS. +</think> + +The issue arises from implementing FEAT_LPA in QEMU's TCG, which changes how the emulated CPU reports features. Older kernels like 4.14.275 may not support this feature, causing boot failures. This is classified under 'mistranslation' as it pertains to TCG handling of CPU features. + +**Answer:** The bug is classified under **MISTRANSlation**. \ No newline at end of file |