1# 2# PCI configuration 3# 4config ARCH_SUPPORTS_MSI 5 bool 6 default n 7 8config PCI_MSI 9 bool "Message Signaled Interrupts (MSI and MSI-X)" 10 depends on PCI 11 depends on ARCH_SUPPORTS_MSI 12 help 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. 17 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 20 entire system. 21 22 If you don't know what to do here, say Y. 23 24config PCI_DEBUG 25 bool "PCI Debugging" 26 depends on PCI && DEBUG_KERNEL 27 help 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. 31 32 When in doubt, say N. 33 34config PCI_STUB 35 tristate "PCI Stub driver" 36 depends on PCI 37 help 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. 40 41 When in doubt, say N. 42 43config XEN_PCIDEV_FRONTEND 44 tristate "Xen PCI Frontend" 45 depends on PCI && X86 && XEN 46 select HOTPLUG 47 select PCI_XEN 48 default y 49 help 50 The PCI device frontend driver allows the kernel to import arbitrary 51 PCI devices from a PCI backend to support PCI driver domains. 52 53config XEN_PCIDEV_FE_DEBUG 54 bool "Xen PCI Frontend debugging" 55 depends on XEN_PCIDEV_FRONTEND && PCI_DEBUG 56 help 57 Say Y here if you want the Xen PCI frontend to produce a bunch of debug 58 messages to the system log. Select this if you are having a 59 problem with Xen PCI frontend support and want to see more of what is 60 going on. 61 62 When in doubt, say N. 63 64config HT_IRQ 65 bool "Interrupts on hypertransport devices" 66 default y 67 depends on PCI && X86_LOCAL_APIC && X86_IO_APIC 68 help 69 This allows native hypertransport devices to use interrupts. 70 71 If unsure say Y. 72 73config PCI_IOV 74 bool "PCI IOV support" 75 depends on PCI 76 help 77 I/O Virtualization is a PCI feature supported by some devices 78 which allows them to create virtual devices which share their 79 physical resources. 80 81 If unsure, say N. 82 83config PCI_IOAPIC 84 bool 85 depends on PCI 86 depends on ACPI 87 depends on HOTPLUG 88 default y 89