[Intel-gfx] [PATCH 12/33] drm/i915/guc: Handle context reset notification

GuC will issue a reset on detecting an engine hang and will notify the driver via a G2H message. The driver will service the notification by resetting the guilty context to a simple state or banning it completely. v2: (John Harrison) - Move msg[0] lookup after length check v3: (John Harrison)

[Intel-gfx] [PATCH 12/33] drm/i915/guc: Handle context reset notification

GuC will issue a reset on detecting an engine hang and will notify the driver via a G2H message. The driver will service the notification by resetting the guilty context to a simple state or banning it completely. v2: (John Harrison) - Move msg[0] lookup after length check v3: (John Harrison)