CONFIG_NTB_MSI: MSI Interrupt Support

General informations

The Linux kernel configuration item CONFIG_NTB_MSI:

• prompt: MSI Interrupt Support
• type: bool
• depends on: CONFIG_PCI_MSI
• defined in drivers/ntb/Kconfig
• found in Linux kernels: 5.3–5.19, 6.0–6.8, 6.9-rc+HEAD

Help text

Support using MSI interrupt forwarding instead of (or in addition to) hardware doorbells. MSI interrupts typically offer lower latency than doorbells and more MSI interrupts can be made available to clients. However this requires an extra memory window and support in the hardware driver for creating the MSI interrupts.

If unsure, say N.

Hardware

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This page is automaticly generated with free (libre, open) software lkddb(see lkddb-sources).

The data is retrived from:

• Linux kernel
• Linux Kernel Driver DataBase (LKDDb)

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