mirror of
https://github.com/torvalds/linux.git
synced 2024-11-23 20:51:44 +00:00
778999703d
The latter is easily fixed - by the developer compiling the module with -DDEBUG. And during runtime - the loglvl provides quite a lot of useful data. Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
143 lines
4.3 KiB
Plaintext
143 lines
4.3 KiB
Plaintext
menu "Xen driver support"
|
|
depends on XEN
|
|
|
|
config XEN_BALLOON
|
|
bool "Xen memory balloon driver"
|
|
default y
|
|
help
|
|
The balloon driver allows the Xen domain to request more memory from
|
|
the system to expand the domain's memory allocation, or alternatively
|
|
return unneeded memory to the system.
|
|
|
|
config XEN_SCRUB_PAGES
|
|
bool "Scrub pages before returning them to system"
|
|
depends on XEN_BALLOON
|
|
default y
|
|
help
|
|
Scrub pages before returning them to the system for reuse by
|
|
other domains. This makes sure that any confidential data
|
|
is not accidentally visible to other domains. Is it more
|
|
secure, but slightly less efficient.
|
|
If in doubt, say yes.
|
|
|
|
config XEN_DEV_EVTCHN
|
|
tristate "Xen /dev/xen/evtchn device"
|
|
default y
|
|
help
|
|
The evtchn driver allows a userspace process to triger event
|
|
channels and to receive notification of an event channel
|
|
firing.
|
|
If in doubt, say yes.
|
|
|
|
config XEN_BACKEND
|
|
bool "Backend driver support"
|
|
depends on XEN_DOM0
|
|
default y
|
|
help
|
|
Support for backend device drivers that provide I/O services
|
|
to other virtual machines.
|
|
|
|
config XENFS
|
|
tristate "Xen filesystem"
|
|
default y
|
|
help
|
|
The xen filesystem provides a way for domains to share
|
|
information with each other and with the hypervisor.
|
|
For example, by reading and writing the "xenbus" file, guests
|
|
may pass arbitrary information to the initial domain.
|
|
If in doubt, say yes.
|
|
|
|
config XEN_COMPAT_XENFS
|
|
bool "Create compatibility mount point /proc/xen"
|
|
depends on XENFS
|
|
default y
|
|
help
|
|
The old xenstore userspace tools expect to find "xenbus"
|
|
under /proc/xen, but "xenbus" is now found at the root of the
|
|
xenfs filesystem. Selecting this causes the kernel to create
|
|
the compatibility mount point /proc/xen if it is running on
|
|
a xen platform.
|
|
If in doubt, say yes.
|
|
|
|
config XEN_SYS_HYPERVISOR
|
|
bool "Create xen entries under /sys/hypervisor"
|
|
depends on SYSFS
|
|
select SYS_HYPERVISOR
|
|
default y
|
|
help
|
|
Create entries under /sys/hypervisor describing the Xen
|
|
hypervisor environment. When running native or in another
|
|
virtual environment, /sys/hypervisor will still be present,
|
|
but will have no xen contents.
|
|
|
|
config XEN_XENBUS_FRONTEND
|
|
tristate
|
|
|
|
config XEN_GNTDEV
|
|
tristate "userspace grant access device driver"
|
|
depends on XEN
|
|
default m
|
|
select MMU_NOTIFIER
|
|
help
|
|
Allows userspace processes to use grants.
|
|
|
|
config XEN_GRANT_DEV_ALLOC
|
|
tristate "User-space grant reference allocator driver"
|
|
depends on XEN
|
|
default m
|
|
help
|
|
Allows userspace processes to create pages with access granted
|
|
to other domains. This can be used to implement frontend drivers
|
|
or as part of an inter-domain shared memory channel.
|
|
|
|
config XEN_PLATFORM_PCI
|
|
tristate "xen platform pci device driver"
|
|
depends on XEN_PVHVM && PCI
|
|
default m
|
|
help
|
|
Driver for the Xen PCI Platform device: it is responsible for
|
|
initializing xenbus and grant_table when running in a Xen HVM
|
|
domain. As a consequence this driver is required to run any Xen PV
|
|
frontend on Xen HVM.
|
|
|
|
config SWIOTLB_XEN
|
|
def_bool y
|
|
depends on PCI
|
|
select SWIOTLB
|
|
|
|
config XEN_PCIDEV_BACKEND
|
|
tristate "Xen PCI-device backend driver"
|
|
depends on PCI && X86 && XEN
|
|
depends on XEN_BACKEND
|
|
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.
|
|
|
|
endchoice
|
|
|
|
endmenu
|