Message Signaled Interrupts (MSI and MSI-X)
modulename: mpic_msi.ko
and/orfsl_msi.ko
and/ormsi.ko
configname: CONFIG_PCI_MSI
Linux Kernel Configuration
└─>Device Drivers
└─>PCI support
└─>Message Signaled Interrupts (MSI and MSI-X)
In linux kernel since version 3.10 (release Date: 2013-06-30)
This allows device drivers to enable MSI (Message Signaled
Interrupts). Message Signaled Interrupts enable a device to
generate an interrupt using an inbound Memory Write on its
PCI bus instead of asserting a device IRQ pin.
Use of PCI MSI interrupts can be disabled at kernel boot time
by using the 'pci=nomsi' option. This disables MSI for the
entire system.
If you don't know what to do here, say Y.
Interrupts). Message Signaled Interrupts enable a device to
generate an interrupt using an inbound Memory Write on its
PCI bus instead of asserting a device IRQ pin.
Use of PCI MSI interrupts can be disabled at kernel boot time
by using the 'pci=nomsi' option. This disables MSI for the
entire system.
If you don't know what to do here, say Y.