Hi everyone, I am porting a device driver from Intel/AMD x86_64 to Jetson AGX Xavier. The driver itself already works on the Jetson using „normal“ DMA (from my card to PC RAM), but I have some trouble getting RDMA to work on the Jetson (it works on x86_64). I modified my kernel driver source accor…

Hi again, I found my problem: I had current->mm->mmap_sem locked, and apparently that caused a deadlock. After removing the down_read() call for that semaphore the lock-up after calling nvidia_p2p_get_pages() is fixed. Ginsengelf

Thanks, but that page mainly contains the stuff that is also written in the link in my first post (or at least I didn’t find anything new) I had a look at the picoevb RDMA example, and it seems to do the same as my code. I don’t have that hardware, so I cannot test it. Any other ideas? Thanks, G…

RDMA on Jetson AGX Xavier locks up in nvidia_p2p_get_pages()

Robotics & Edge Computing Jetson Systems Jetson AGX Xavier

kayccc January 26, 2021, 11:08pm 2

Hi Ginsengelf,

Please refer to GPUDirect RDMA on NVIDIA Jetson AGX Xavier

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RDMA on Jetson AGX Xavier locks up in nvidia_p2p_get_pages()

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