1deb2d2ecSBenjamin Herrenschmidtconfig VGA_ARB 2deb2d2ecSBenjamin Herrenschmidt bool "VGA Arbitration" if EMBEDDED 3deb2d2ecSBenjamin Herrenschmidt default y 4deb2d2ecSBenjamin Herrenschmidt depends on PCI 5deb2d2ecSBenjamin Herrenschmidt help 6deb2d2ecSBenjamin Herrenschmidt Some "legacy" VGA devices implemented on PCI typically have the same 7deb2d2ecSBenjamin Herrenschmidt hard-decoded addresses as they did on ISA. When multiple PCI devices 8deb2d2ecSBenjamin Herrenschmidt are accessed at same time they need some kind of coordination. Please 9deb2d2ecSBenjamin Herrenschmidt see Documentation/vgaarbiter.txt for more details. Select this to 10deb2d2ecSBenjamin Herrenschmidt enable VGA arbiter. 1136028f33SMike Travis 1236028f33SMike Travisconfig VGA_ARB_MAX_GPUS 1336028f33SMike Travis int "Maximum number of GPUs" 1436028f33SMike Travis default 16 1536028f33SMike Travis depends on VGA_ARB 1636028f33SMike Travis help 1736028f33SMike Travis Reserves space in the kernel to maintain resource locking for 1836028f33SMike Travis multiple GPUS. The overhead for each GPU is very small. 19