intel: execlists.rs + hangcheck.rs module documentation
execlists.rs: GPU context scheduling architecture
2-slot ELSP ping-pong context switching (Gen8+)
LRC descriptor format with engine class/instance encoding
Context Status Buffer (CSB) completion signaling
Register map: ELSP, STATUS, CTX_CTL, CSB_PTR, EL_CTL
hangcheck.rs: GPU hang detection + reset recovery
ACTHD/head/tail stall detection with MAX_HANG_STALLS
Per-engine reset (RESET_CTL) → global reset (GEN6_GDRST)
Syncobj error signaling after reset recovery
Intel driver: 95 files, 0 errors — 28 spec-commented files
vasilito
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