kernelconfig_penguin
selects
CONFIG_GENERIC_MSI_IRQ

depends
CONFIG_PCI


is depended by
CONFIG_AMD_IOMMU

Message Signaled Interrupts (MSI and MSI-X)

modulename: msi.ko

and/or

mpic_msi.ko

and/or

fsl_msi.ko
configname: CONFIG_PCI_MSI

Linux Kernel Configuration
└─> Device Drivers
└─> PCI support
└─> Message Signaled Interrupts (MSI and MSI-X)

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.


source code:


arch/powerpc/platforms/pasemi/msi.c