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York_tsang's avatar
York_tsang
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5 months ago

Can CXL host force device to response with data when sending SnpData to device through CXL.cache?

According to CXL spec, a device doesn't need to return data if the device doesn't response with Res*Fwd* in d2h response channel.

But as a host, can I force the device to return data?

Fpga Devkit
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1 Reply

  • RongY_altera's avatar
    RongY_altera
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    5 months ago

    Hi,

    From host side, it's unlikely to do so since the system environment should follow the spec.


    Say the CXL action you described is posted, and you find a way to change it to be non-posted, what will happen?


    Regards,

    Rong