4 config ARCH_SUPPORTS_MSI
9 bool "Message Signaled Interrupts (MSI and MSI-X)"
11 depends on ARCH_SUPPORTS_MSI
13 This allows device drivers to enable MSI (Message Signaled
14 Interrupts). Message Signaled Interrupts enable a device to
15 generate an interrupt using an inbound Memory Write on its
16 PCI bus instead of asserting a device IRQ pin.
18 Use of PCI MSI interrupts can be disabled at kernel boot time
19 by using the 'pci=nomsi' option. This disables MSI for the
22 If you don't know what to do here, say Y.
26 depends on PCI && DEBUG_KERNEL
28 Say Y here if you want the PCI core to produce a bunch of debug
29 messages to the system log. Select this if you are having a
30 problem with PCI support and want to see more of what is going on.
35 tristate "PCI Stub driver"
38 Say Y or M here if you want be able to reserve a PCI device
39 when it is going to be assigned to a guest operating system.
43 config XEN_PCIDEV_FRONTEND
44 tristate "Xen PCI Frontend"
45 depends on PCI && X86 && XEN
48 select XEN_XENBUS_FRONTEND
51 The PCI device frontend driver allows the kernel to import arbitrary
52 PCI devices from a PCI backend to support PCI driver domains.
55 bool "Interrupts on hypertransport devices"
57 depends on PCI && X86_LOCAL_APIC && X86_IO_APIC
59 This allows native hypertransport devices to use interrupts.
67 bool "PCI IOV support"
71 I/O Virtualization is a PCI feature supported by some devices
72 which allows them to create virtual devices which share their
78 bool "PCI PRI support"
82 PRI is the PCI Page Request Interface. It allows PCI devices that are
83 behind an IOMMU to recover from page faults.
88 bool "PCI PASID support"
92 Process Address Space Identifiers (PASIDs) can be used by PCI devices
93 to access more than one IO address space at the same time. To make
94 use of this feature an IOMMU is required which also supports PASIDs.
95 Select this option if you have such an IOMMU and want to compile the
96 driver for it into your kernel.
101 tristate "PCI IO-APIC hotplug support" if X86
108 def_bool y if (DMI || ACPI)