5 bool "Message Signaled Interrupts (MSI and MSI-X)"
8 This allows device drivers to enable MSI (Message Signaled
9 Interrupts). Message Signaled Interrupts enable a device to
10 generate an interrupt using an inbound Memory Write on its
11 PCI bus instead of asserting a device IRQ pin.
13 Use of PCI MSI interrupts can be disabled at kernel boot time
14 by using the 'pci=nomsi' option. This disables MSI for the
17 If you don't know what to do here, say Y.
21 depends on PCI && DEBUG_KERNEL
23 Say Y here if you want the PCI core to produce a bunch of debug
24 messages to the system log. Select this if you are having a
25 problem with PCI support and want to see more of what is going on.
29 config PCI_REALLOC_ENABLE_AUTO
30 bool "Enable PCI resource re-allocation detection"
33 Say Y here if you want the PCI core to detect if PCI resource
34 re-allocation needs to be enabled. You can always use pci=realloc=on
35 or pci=realloc=off to override it. Note this feature is a no-op
36 unless PCI_IOV support is also enabled; in that case it will
37 automatically re-allocate PCI resources if SR-IOV BARs have not
38 been allocated by the BIOS.
43 tristate "PCI Stub driver"
46 Say Y or M here if you want be able to reserve a PCI device
47 when it is going to be assigned to a guest operating system.
51 config XEN_PCIDEV_FRONTEND
52 tristate "Xen PCI Frontend"
53 depends on PCI && X86 && XEN
55 select XEN_XENBUS_FRONTEND
58 The PCI device frontend driver allows the kernel to import arbitrary
59 PCI devices from a PCI backend to support PCI driver domains.
62 bool "Interrupts on hypertransport devices"
64 depends on PCI && X86_LOCAL_APIC && X86_IO_APIC
66 This allows native hypertransport devices to use interrupts.
74 bool "PCI IOV support"
78 I/O Virtualization is a PCI feature supported by some devices
79 which allows them to create virtual devices which share their
85 bool "PCI PRI support"
89 PRI is the PCI Page Request Interface. It allows PCI devices that are
90 behind an IOMMU to recover from page faults.
95 bool "PCI PASID support"
99 Process Address Space Identifiers (PASIDs) can be used by PCI devices
100 to access more than one IO address space at the same time. To make
101 use of this feature an IOMMU is required which also supports PASIDs.
102 Select this option if you have such an IOMMU and want to compile the
103 driver for it into your kernel.
108 bool "PCI IO-APIC hotplug support" if X86
111 depends on X86_IO_APIC
115 def_bool y if (DMI || ACPI)
118 source "drivers/pci/host/Kconfig"