Change Details

The VID, DID, REVID, SUBVID and SUBDID of igd-lpc need aligned with physical one. Without these physical values, GVT-d GOP driver couldn't work. Note: See https://github.com/Beckhoff/freebsd-src/commits/phab/corvink/lpc-id

The Intel GOP driver checks the lpc ids to detect the platform it's running on. The GOP driver only works on the platforms it's written for. Maybe other Intel driver have the same behaviour. For that reason, we should use the lpc ids of the FreeBSD host for GPU passthrough to work properly. We don't know if setting different lpc ids have any side effect. Therefore, don't use the host lpc ids by default on Intel system. Give the user the opportunity to modify the lpc ids. This option accepts hexadecimal numbers and the special "host" keyword to simplify setting host lpc ids.

The VID, The Intel GOP driver checks the lpc ids to detect the platform it's running on. DID, REVID, SUBVID and SUBDID of igd-lpc need aligned with physical one.The GOP driver only works on the platforms it's written for. Maybe other Intel driver have the same behaviour. For that reason, Without these physical values, GVT-d GOP driver couldn'twe should use the lpc ids of the FreeBSD host for GPU passthrough to work properly. Note: See https://github.com/Beckhoff/freebsd-src/commits/phab/corvink/lpc-id We don't know if setting different lpc ids have any side effect. Therefore, don't use the host lpc ids by default on Intel system. Give the user the opportunity to modify the lpc ids. This option accepts hexadecimal numbers and the special "host" keyword to simplify setting host lpc ids.