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xen/gntdev: allow usermode to map granted pages

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The gntdev driver allows usermode to map granted pages from other
domains.  This is typically used to implement a Xen backend driver
in user mode.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Stefano Stabellini <Stefano.Stabellini@eu.citrix.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
This commit is contained in:
Gerd Hoffmann
2010-12-14 18:40:46 +00:00
committed by Konrad Rzeszutek Wilk
parent f07745325c
commit ab31523c2f
4 changed files with 763 additions and 0 deletions
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7
drivers/xen/Kconfig
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@@ -62,6 +62,13 @@ config XEN_SYS_HYPERVISOR
virtual environment, /sys/hypervisor will still be present,
but will have no xen contents.
config XEN_GNTDEV
tristate "userspace grant access device driver"
depends on XEN
select MMU_NOTIFIER
help
Allows userspace processes to use grants.
config XEN_PLATFORM_PCI
tristate "xen platform pci device driver"
depends on XEN_PVHVM