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<think>
Alright, I'm trying to classify this bug report for QEMU. The issue says "-cpu host results in unsupported AVX512 instructions". Let me break it down.
First, "-cpu host" is a QEMU option that sets the CPU type to match the host's CPU. That means QEMU should use all the host's capabilities, including newer instructions like AVX512.
AVX512 is an instruction set extension for CPUs. If QEMU is reporting this as unsupported, it might mean that when trying to emulate or pass through these instructions, there's a problem.
The error suggests that during runtime, specifically when using host CPU settings, the AVX512 instructions aren't being handled correctly. This isn't about a specific system call (syscall) going wrong. It also doesn't seem like it's just an instruction-level bug because it's related to how QEMU handles CPU features.
So, since this happens during runtime when using certain CPU settings and involves handling of CPU instructions, the category should be 'runtime'.
</think>
runtime
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