xen/pciback: Have 'passthrough' option instead of XEN_PCIDEV_BACKEND_PASS and XEN_PCI...

[karo-tx-linux.git] / drivers / xen / Kconfig

diff --git a/drivers/xen/Kconfig b/drivers/xen/Kconfig
index 0b6989f92041b4a2be7cc7f422368aa2925d29c9..9b700b4a987a1457b127a224bfdca6e47b17499d 100644 (file)
--- a/drivers/xen/Kconfig
+++ b/drivers/xen/Kconfig
@@ -109,34 +109,22 @@ config XEN_PCIDEV_BACKEND
        tristate "Xen PCI-device backend driver"
        depends on PCI && X86 && XEN
        depends on XEN_BACKEND
+       default m
        help
          The PCI device backend driver allows the kernel to export arbitrary
          PCI devices to other guests. If you select this to be a module, you
          will need to make sure no other driver has bound to the device(s)
          you want to make visible to other guests.
 
-choice
-       prompt "PCI Backend Mode"
-       depends on XEN_PCIDEV_BACKEND
-
-config XEN_PCIDEV_BACKEND_VPCI
-       bool "Virtual PCI"
-       help
-         This PCI Backend hides the true PCI topology and makes the frontend
-         think there is a single PCI bus with only the exported devices on it.
-         For example, a device at 03:05.0 will be re-assigned to 00:00.0. A
-         second device at 02:1a.1 will be re-assigned to 00:01.1.
-
-config XEN_PCIDEV_BACKEND_PASS
-       bool "Passthrough"
-       help
-         This PCI Backend provides a real view of the PCI topology to the
-         frontend (for example, a device at 06:01.b will still appear at
-         06:01.b to the frontend). This is similar to how Xen 2.0.x exposed
-         PCI devices to its driver domains. This may be required for drivers
-         which depend on finding their hardward in certain bus/slot
-         locations.
+         The parameter "passthrough" allows you specify how you want the PCI
+         devices to appear in the guest. You can choose the default (0) where
+         PCI topology starts at 00.00.0, or (1) for passthrough if you want
+         the PCI devices topology appear the same as in the host.
 
-endchoice
+         The "hide" parameter (only applicable if backend driver is compiled
+         into the kernel) allows you to bind the PCI devices to this module
+         from the default device drivers. The argument is the list of PCI BDFs:
+         xen-pciback.hide=(03:00.0)(04:00.0)
 
+         If in doubt, say m.
 endmenu