Okay, so I'm trying to figure out how to classify this bug report for QEMU. The user is having trouble starting Windows 10 ARM64 on their system using KVM. They mentioned that without KVM, it works but runs slowly, and with KVM, it just freezes at the UEFI logo. First, I need to look at the possible categories: mistranslation, assembly lowering, device, graphic, socket, network, KVM, boot, vnc, debug, files, permissions, performance, kernel, peripherals, hypervisor, other. The user is using QEMU with KVM acceleration and specifically mentions that when they use "-accel kvm", it doesn't work. But without KVM (using TCG), it does start but is slow. So the issue seems related to KVM. They also note that others have successfully started Windows 10 ARM64 with KVM, so it might not be a general problem. The error occurs during boot because the screen is stuck at the UEFI logo. However, they're using ramfb, which implies that graphics aren't the issue here since ramfb doesn't rely on physical GPU hardware. The user also tried switching to VGA and got it working without KVM, but not with KVM. So, considering all this, the problem is likely in how QEMU interacts with KVM when running ARM64 guests. Since KVM provides virtualization for ARM, any issues here could be classified under 'hypervisor' because KVM functions as a hypervisor for hardware-assisted virtualization on ARM64 systems. I don't think it's mistranslation or assembly lowering since the issue is specific to KVM usage. It's not related to graphics since ramfb works fine without GPU dependencies, and they have another setup working with VGA in TCG mode. Performance isn't the main issue because while using TCG is slower, the problem here is that it doesn't boot at all with KVM. Therefore, the appropriate category for this bug report is 'hypervisor' since it's directly related to how QEMU interfaces with the KVM hypervisor when running ARM64 guests. hypervisor