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NZhan1's avatar
NZhan1
Icon for Occasional Contributor rankOccasional Contributor
5 years ago

rmmod PCIe AVMM DMA demo‘s driver cause system crash

Hi, Could you help me with this driver issue? We use PCIe AVMM DMA reference design and its driver on A10 card. system is centos7.8, operation core is 3.10.0-1127.13.1.el7.x86_64. The reference...
BoonT_Intel's avatar
BoonT_Intel
Icon for Frequent Contributor rankFrequent Contributor
5 years ago

Hello Sir,


May I know why you want to unload the driver? For normal applications, we usually do not need to rmmod it.

I am sorry to say that the driver in the reference design is provided an as-is basis and Intel can't support this but I can give some suggestions. It looks like the crash is due to the host suddenly cannot detect the PCIe after you rmmod the driver. May you can try to mask the AER (error reporting) from the host side.


NZhan1's avatar
NZhan1
Icon for Occasional Contributor rankOccasional Contributor
5 years ago

Hi

We want to use rmmod fuction for future system debug usage.

We capture the AER after insmod, which is as attached. After rmmod, the system crashed, we can't operate it.

Very appreciate for your supports!

Thanks!

  • BoonT_Intel's avatar
    BoonT_Intel
    Icon for Frequent Contributor rankFrequent Contributor
    5 years ago

    Hi Sir,

    Sorry to mention that we can't support you on the driver. It is provided as-is basis.

    I am sorry for the inconvenience caused.

    • BoonT_Intel's avatar
      BoonT_Intel
      Icon for Frequent Contributor rankFrequent Contributor
      5 years ago

      This thread will be transitioned to community support. If you have a new question, feel free to open a new thread to get the support from Intel experts. Otherwise, the community users will continue to help you on this thread. Thank you.