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    SubjectRe: [PATCH 5/8] xen/gntdev: Add initial support for dma-buf UAPI
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    On 05/25/2018 06:33 PM, Oleksandr Andrushchenko wrote:
    > diff --git a/drivers/xen/Kconfig b/drivers/xen/Kconfig
    > index 3431fe210624..eaf63a2c7ae6 100644
    > --- a/drivers/xen/Kconfig
    > +++ b/drivers/xen/Kconfig
    > @@ -152,6 +152,16 @@ config XEN_GNTDEV
    > help
    > Allows userspace processes to use grants.
    >
    > +config XEN_GNTDEV_DMABUF
    > + bool "Add support for dma-buf grant access device driver extension"
    > + depends on XEN_GNTDEV && XEN_GRANT_DMA_ALLOC
    This must be "depends on XEN_GNTDEV && XEN_GRANT_DMA_ALLOC &&
    *DMA_SHARED_BUFFER*"
    > + help
    > + Allows userspace processes and kernel modules to use Xen backed
    > + dma-buf implementation. With this extension grant references to
    > + the pages of an imported dma-buf can be exported for other domain
    > + use and grant references coming from a foreign domain can be
    > + converted into a local dma-buf for local export.
    > +
    >

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