Okay, I need to classify this bug report into one of the given categories. Let's read through it carefully. The issue is a build failure on s390x when using Clang 17. The problem arises because `__int128` needs to be 8-byte aligned, but the code in `atomic128-ldst.h` uses 16-byte alignment unconditionally. This causes errors during compilation related to `__sync` built-in operations not having natural alignment. Looking at the categories provided: mistranslation, assembly, other, device, graphic, socket, network, KVM, boot, vnc, debug, files, permissions, performance, kernel, peripherals, hypervisor. This bug is about incorrect alignment in the code, leading to a build failure. It's related to how `__int128` is handled and aligned during compilation, which affects the generated machine code. The error messages mention using `__sync` built-ins incorrectly, suggesting it's an issue with how atomic operations are being performed at the assembly level. The problem isn't about user-mode translations or direct device/peripheral interactions. It seems more related to the assembly generation and alignment in the compiler. So it's likely under the 'assembly' category. assembly