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<think>
Okay, so I need to classify this bug report into one of the given categories for QEMU. Let me read through the problem description carefully.
The user is reporting issues after upgrading from QEMU 7.1 to 7.2. The main problems are I/O errors and performance drops when using virtio-blk-pci with detect-zeroes=unmap. They mention that this affects both existing Linux/Windows guests and a new Debian setup.
Looking at the categories provided: mistranslation, assembly, device, graphic, socket, network, KVM, boot, vnc, debug, files, permissions, performance, kernel, peripherals, hypervisor, other.
The issues are related to I/O errors and performance with the virtio-blk-pci device. Since virtio-blk-pci is a block device used for disk I/O in QEMU, this seems like it's related to how devices are handled. The detect-zeroes=unmap option might be interacting differently now, causing these issues.
I don't see any mention of assembly or translation errors here; the problems are more about device behavior and performance. It doesn't seem to fall under network, graphic, or other categories like permissions or hypervisor directly.
So, considering that the problem is with a specific device (virtio-blk-pci) and its configuration options leading to I/O issues, the category should be 'device'.
</think>
device
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