drivers/ntb/Kconfig


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config NTB
       tristate "Intel Non-Transparent Bridge support"
       depends on PCI
       depends on X86_64
       help
        The PCI-E Non-transparent bridge hardware is a point-to-point PCI-E bus
        connecting 2 systems.  When configured, writes to the device's PCI
        mapped memory will be mirrored to a buffer on the remote system.  The
        ntb Linux driver uses this point-to-point communication as a method to
        transfer data from one system to the other.

        If unsure, say N.