xen/gntdev: Use select for DMA_SHARED_BUFFER
[ Upstream commit5.4-rM2-2.2.x-imx-squashedfa6614d8ef
] DMA_SHARED_BUFFER can not be enabled by the user (it represents a library set in the kernel). The kconfig convention is to use select for such symbols so they are turned on implicitly when the user enables a kconfig that needs them. Otherwise the XEN_GNTDEV_DMABUF kconfig is overly difficult to enable. Fixes:932d656217
("xen/gntdev: Add initial support for dma-buf UAPI") Cc: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: xen-devel@lists.xenproject.org Cc: Juergen Gross <jgross@suse.com> Cc: Stefano Stabellini <sstabellini@kernel.org> Reviewed-by: Juergen Gross <jgross@suse.com> Reviewed-by: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com> Signed-off-by: Juergen Gross <jgross@suse.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
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@ -141,7 +141,8 @@ config XEN_GNTDEV
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config XEN_GNTDEV_DMABUF
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bool "Add support for dma-buf grant access device driver extension"
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depends on XEN_GNTDEV && XEN_GRANT_DMA_ALLOC && DMA_SHARED_BUFFER
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depends on XEN_GNTDEV && XEN_GRANT_DMA_ALLOC
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select DMA_SHARED_BUFFER
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help
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Allows userspace processes and kernel modules to use Xen backed
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dma-buf implementation. With this extension grant references to
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