diff options
| author | Alex Zeffertt <alex.zeffertt@eu.citrix.com> | 2009-01-07 18:07:11 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-01-08 08:30:59 -0800 |
| commit | 1107ba885e46964316c083d441d5dd185b6c9e49 (patch) | |
| tree | 98cc3f81ad7ff554e10fc263abfb7727a438cc5a /drivers/xen/Kconfig | |
| parent | d8220347da2a0639f5e1919a5af08f49cb37c24f (diff) | |
| download | lwn-1107ba885e46964316c083d441d5dd185b6c9e49.tar.gz lwn-1107ba885e46964316c083d441d5dd185b6c9e49.zip | |
xen: add xenfs to allow usermode <-> Xen interaction
The xenfs filesystem exports various interfaces to usermode. Initially
this exports a file to allow usermode to interact with xenbus/xenstore.
Traditionally this appeared in /proc/xen. Rather than extending procfs,
this patch adds a backward-compat mountpoint on /proc/xen, and provides
a xenfs filesystem which can be mounted there.
Signed-off-by: Alex Zeffertt <alex.zeffertt@eu.citrix.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/xen/Kconfig')
| -rw-r--r-- | drivers/xen/Kconfig | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/drivers/xen/Kconfig b/drivers/xen/Kconfig index 4b75a16de009..526187c8a12d 100644 --- a/drivers/xen/Kconfig +++ b/drivers/xen/Kconfig @@ -17,3 +17,27 @@ config XEN_SCRUB_PAGES is not accidentally visible to other domains. Is it more secure, but slightly less efficient. If in doubt, say yes. + +config XENFS + tristate "Xen filesystem" + depends on XEN + 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 compatibilty mount point /proc/xen if it is running on + a xen platform. + If in doubt, say yes. + |