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xen: Make XEN_BACKEND selectable by DomU 

XEN_BACKEND doesn't actually depend on XEN_DOM0.  DomUs can serve
backends to other DomUs.  One example is a service VM providing network
backends.

The original Kconfig defaulted Dom0 to y and it could be disabled.  DomU
could not select the option.  With the new Kconfig, we default y for
Dom0 and n for DomU.  Either can then toggle the selection.

Signed-off-by: Jason Andryuk <jandryuk@gmail.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
hifive-unleashed-5.1
Jason Andryuk 2018-09-25 07:36:55 -04:00 committed by Juergen Gross
parent a978a5b8d8
commit ea9e57d06e
1 changed files with 1 additions and 2 deletions
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drivers/xen/Kconfig
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@ -105,8 +105,7 @@ config XEN_DEV_EVTCHN
config XEN_BACKEND
bool "Backend driver support"
depends on XEN_DOM0
default y
default XEN_DOM0
help
Support for backend device drivers that provide I/O services
to other virtual machines.