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xenbus: Add support for xenbus backend in stub domain

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Add an ioctl to the /dev/xen/xenbus_backend device allowing the xenbus
backend to be started after the kernel has booted. This allows xenstore
to run in a different domain from the dom0.

Signed-off-by: Daniel De Graaf <[email protected]>
Signed-off-by: Konrad Rzeszutek Wilk <[email protected]>
This commit is contained in:
Daniel De Graaf 2012-05-08 09:46:57 -04:00 • committed by Konrad Rzeszutek Wilk
commit d2fb4c51c7
5 changed files with 63 additions and 0 deletions
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2
include/xen/grant_table.h
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@ -46,6 +46,8 @@
#include <xen/features.h>
#define GNTTAB_RESERVED_XENSTORE 1
/* NR_GRANT_FRAMES must be less than or equal to that configured in Xen */
#define NR_GRANT_FRAMES 4

3
include/xen/xenbus_dev.h
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@ -38,4 +38,7 @@
#define IOCTL_XENBUS_BACKEND_EVTCHN \
_IOC(_IOC_NONE, 'B', 0, 0)
#define IOCTL_XENBUS_BACKEND_SETUP \
_IOC(_IOC_NONE, 'B', 1, 0)
#endif /* __LINUX_XEN_XENBUS_DEV_H__ */