5 bool "Message Signaled Interrupts (MSI and MSI-X)"
7 depends on (X86_LOCAL_APIC && X86_IO_APIC) || IA64
10 This allows device drivers to enable MSI (Message Signaled
11 Interrupts). Message Signaled Interrupts enable a device to
12 generate an interrupt using an inbound Memory Write on its
13 PCI bus instead of asserting a device IRQ pin.
15 Use of PCI MSI interrupts can be disabled at kernel boot time
16 by using the 'pci=nomsi' option. This disables MSI for the
19 If you don't know what to do here, say N.
21 config PCI_MULTITHREAD_PROBE
22 bool "PCI Multi-threaded probe (EXPERIMENTAL)"
23 depends on PCI && EXPERIMENTAL && BROKEN
25 Say Y here if you want the PCI core to spawn a new thread for
26 every PCI device that is probed. This can cause a huge
27 speedup in boot times on multiprocessor machines, and even a
28 smaller speedup on single processor machines.
30 But it can also cause lots of bad things to happen. A number
31 of PCI drivers cannot properly handle running in this way,
32 some will just not work properly at all, while others might
33 decide to blow up power supplies with a huge load all at once,
34 so use this option at your own risk.
36 It is very unwise to use this option if you are not using a
37 boot process that can handle devices being created in any
38 order. A program that can create persistent block and network
39 device names (like udev) is a good idea if you wish to use
42 Again, use this option at your own risk, you have been warned!
48 depends on PCI && DEBUG_KERNEL
50 Say Y here if you want the PCI core to produce a bunch of debug
51 messages to the system log. Select this if you are having a
52 problem with PCI support and want to see more of what is going on.
57 bool "Interrupts on hypertransport devices"
59 depends on PCI && X86_LOCAL_APIC && X86_IO_APIC && !XEN
61 This allows native hypertransport devices to use interrupts.