5 bool "Message Signaled Interrupts (MSI and MSI-X)"
9 This allows device drivers to enable MSI (Message Signaled
10 Interrupts). Message Signaled Interrupts enable a device to
11 generate an interrupt using an inbound Memory Write on its
12 PCI bus instead of asserting a device IRQ pin.
14 Use of PCI MSI interrupts can be disabled at kernel boot time
15 by using the 'pci=nomsi' option. This disables MSI for the
18 If you don't know what to do here, say Y.
20 config PCI_MSI_IRQ_DOMAIN
23 select GENERIC_MSI_IRQ_DOMAIN
27 depends on PCI && DEBUG_KERNEL
29 Say Y here if you want the PCI core to produce a bunch of debug
30 messages to the system log. Select this if you are having a
31 problem with PCI support and want to see more of what is going on.
35 config PCI_REALLOC_ENABLE_AUTO
36 bool "Enable PCI resource re-allocation detection"
39 Say Y here if you want the PCI core to detect if PCI resource
40 re-allocation needs to be enabled. You can always use pci=realloc=on
41 or pci=realloc=off to override it. Note this feature is a no-op
42 unless PCI_IOV support is also enabled; in that case it will
43 automatically re-allocate PCI resources if SR-IOV BARs have not
44 been allocated by the BIOS.
49 tristate "PCI Stub driver"
52 Say Y or M here if you want be able to reserve a PCI device
53 when it is going to be assigned to a guest operating system.
57 config XEN_PCIDEV_FRONTEND
58 tristate "Xen PCI Frontend"
59 depends on PCI && X86 && XEN
61 select XEN_XENBUS_FRONTEND
64 The PCI device frontend driver allows the kernel to import arbitrary
65 PCI devices from a PCI backend to support PCI driver domains.
68 bool "Interrupts on hypertransport devices"
70 depends on PCI && X86_LOCAL_APIC
72 This allows native hypertransport devices to use interrupts.
80 bool "PCI IOV support"
84 I/O Virtualization is a PCI feature supported by some devices
85 which allows them to create virtual devices which share their
91 bool "PCI PRI support"
95 PRI is the PCI Page Request Interface. It allows PCI devices that are
96 behind an IOMMU to recover from page faults.
101 bool "PCI PASID support"
105 Process Address Space Identifiers (PASIDs) can be used by PCI devices
106 to access more than one IO address space at the same time. To make
107 use of this feature an IOMMU is required which also supports PASIDs.
108 Select this option if you have such an IOMMU and want to compile the
109 driver for it into your kernel.
114 def_bool y if (DMI || ACPI)
117 source "drivers/pci/host/Kconfig"