KMDF - Quick Reference Deep Knowledge : Use with technology: . Authoritative source: . Driver entry + device add I/O queues — dispatch types | Type | Behavior | |------|----------| | | One request at a time | | | Many concurrent requests (your callbacks must be reentrant) | | | You retrieve requests with | Use manual queues for forwarding patterns (filter holds requests, completes them later when the underlying device responds). IRQL Cheat Sheet | IRQL | Allowed | Forbidden | |------|---------|-----------| | (0) | Anything: paging OK, blocking OK | — | | (1) | Most things; APCs disabled | — |…