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<think>
Okay, I need to classify this bug report: "booting a Linux guest with qemu-system-sparc with icount enabled hangs". The possible categories are mistranslation, assembly, other, device, graphic, socket, network, KVM, boot, vnc, debug, files, permissions, performance, kernel, peripherals, hypervisor.
First, let's understand the bug. The user is using QEMU to run a Linux guest on SPARC architecture and has enabled icount, which I think stands for instruction counting. When they do this, the system hangs during booting.
Looking at the categories:
- Mistranslation relates to incorrect semantic mapping from source to target, possibly in user-mode assembly. This could cause issues during execution but might not necessarily hang on boot.
- Assembly lowering is about converting high-level IR to machine code; maybe if there's a bug here, it could cause hangs, but the context is more specific.
- The 'boot' category seems relevant because the issue happens during the boot process of the guest OS. It's directly related to starting up the system with certain parameters (icount enabled).
- Other categories like device, network, etc., don't seem as fitting here since the problem occurs at boot time without specific mention of hardware or networking issues.
The icount option in QEMU is used for debugging and might interact with the boot process. If enabling it causes a hang, it's likely an issue during the initial stages of the guest OS starting up, which points towards a 'boot' category bug.
</think>
boot
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