063ad3ad9e
Fix hsaKmtRegisterMemory to be a no-op for now and move the multi-GPU implementation to hsaKmtRegisterMemoryToNodes. Make GPU memory mappings of host memory visible to all GPUs by default. Device memory is still visible to the allocating GPU only by default (but can be overridden with hsaKmtRegisterMemoryToNodes for experimenting with P2P). Change-Id: I73408afbe3b10c8dad2ab3a780f58413249692e6