Okay, I need to figure out whether this bug report is user-mode or system-mode related in QEMU. The issue is about adding a new syscall (number 436) to the MIPS target in QEMU's user mode. The user added an entry for `sys_getdents64_x32` but encountered ENOSYS, meaning the syscall isn't recognized. Looking at the code, the MIPS and ARM implementations handle syscalls differently. ARM uses a base number (`ARM_NR_BASE`) to map syscalls, while MIPS doesn't have such a mechanism, leading to potential issues when adding new syscalls beyond the predefined range. The problem arises in `cpu_loop.c`, which is part of user-mode emulation. User-mode handles running unprivileged applications and system calls made by them. Since this issue is about syscall handling and not involving higher privileges or hardware devices, it's a user-mode problem. So, the classification should be 'user'. user