Memory Controller Feedback for Invalid NVMe IO Queue Size

The memory controller implements a feedback mechanism by sending indication information to the host when the IO queue size exceeds the preset value range. This feedback loop allows the host to detect the overflow condition and take corrective actions, such as adjusting the queue size or retransmitting data, thereby preventing undefined behavior and maintaining system reliability while still allowing flexible queue size configuration

The system performs preliminary validation by checking whether the IO queue size falls within the preset value range before processing the queue creation command. When the size exceeds the range, the memory controller proactively sends indication information to the host before any undefined behavior can occur, allowing preventive measures to be taken and avoiding potential IO traffic failure

The error handling functionality is extracted as a separate, dedicated mechanism within the memory controller. Instead of distributing error checking logic throughout the entire system, the controller has a specific module that detects invalid transmission values and generates indication information. This extraction simplifies the overall system architecture by centralizing error handling while improving the processing capability for error information

The indication information acts as an intermediary between the memory controller and the host system. Rather than requiring complex direct communication protocols or multiple validation layers, the controller uses this intermediate signal to convey error status to the host, which then handles the appropriate corrective actions. This intermediary mechanism improves error processing capability while adding minimal complexity to the device