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<think>
Okay, I need to classify this bug report into one of the given categories: mistranslation, assembly lowering, other, device, graphic, socket, network, KVM, boot, vnc, debug, files, permissions, performance, kernel, peripherals, hypervisor.
The user submitted a feature request asking for TCG OPAL 2 emulation support in the virtio disk emulation. They want encryption at the host level using hardware acceleration like AES-NI or other cryptographic facilities.
Looking at the categories, 'device' seems relevant because it's about adding functionality to a device (the disk) and enabling encryption which is a feature of the device driver.
Other possible categories were considered: network, but it's not related; kernel might be involved, but the main focus is on the device emulation. So 'device' is the best fit.
</think>
The user is requesting an enhancement for Virtio disk emulation to support TCG OPAL 2 encryption. This relates to enhancing the functionality of a specific hardware device (disk) within the virtualization environment.
**Answer:**
device
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