Okay, I need to classify this bug report as either 'user-mode' or 'system-mode'. The issue is about the FAR_EL1 register in ARM where tag bits are not being set correctly during data aborts or watchpoints. FAR_EL1 is an exception address register used when an exception occurs, such as a data abort. It captures the faulting address. The problem is that even though address tagging is enabled, the tag bits in FAR_EL1 are always cleared. I remember that ARM Exception Level 1 (EL1) is typically associated with system mode or hypervisor mode in some architectures. EL1 handles exceptions and has higher privileges compared to user-mode which is usually at EL0. The issue affects how exceptions are handled regarding address tagging, which seems like a low-level feature, likely related to memory management and exception handling—things that the OS or kernel manages. So this would fall under system operations rather than user applications. Also, considering QEMU is involved, which emulates hardware and deals with lower-level aspects of the system, it's more aligned with system-mode functions. So putting it together, this bug relates to how exceptions are processed at a higher privilege level, affecting system operations. Therefore, it's a 'system' mode issue. The bug report pertains to an issue with exception handling and address tagging in ARM architecture, specifically involving the FAR_EL1 register which operates at Exception Level 1 (EL1). Since EL1 is associated with higher privileges and is typically used by the operating system kernel or hypervisors for managing exceptions and memory, this issue falls under system-mode operations. system