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# PCI configuration
config PCI_MSI
bool "Message Signaled Interrupts (MSI and MSI-X)"
depends on PCI
depends on (X86_LOCAL_APIC && X86_IO_APIC) || IA64
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.
If you don't know what to do here, say N.
bool "Legacy /proc/pci interface"
depends on PCI
This feature enables a procfs file -- /proc/pci -- that provides a
summary of PCI devices in the system.
This feature has been deprecated as of v2.5.53, in favor of using the
tool lspci(8). This feature may be removed at a future date.
lspci can provide the same data, as well as much more. lspci is a part of
the pci-utils package, which should be installed by your distribution.
See <file:Documentation/Changes> for information on where to get the latest
When in doubt, say N.
config PCI_NAMES
bool "PCI device name database"
depends on PCI
By default, the kernel contains a database of all known PCI device
names to make the information in /proc/pci, /proc/ioports and
similar files comprehensible to the user.
This database increases size of the kernel image by about 80KB. This
memory is freed after the system boots up if CONFIG_HOTPLUG is not set.
Anyway, if you are building an installation floppy or kernel for an
embedded system where kernel image size really matters, you can disable
this feature and you'll get device ID numbers instead of names.
When in doubt, say Y.
config PCI_DEBUG
bool "PCI Debugging"
depends on PCI && DEBUG_KERNEL
Say Y here if you want the PCI core to produce a bunch of debug
messages to the system log. Select this if you are having a
problem with PCI support and want to see more of what is going on.
When in doubt, say N.