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Commit dd6a2167 authored by Jason Gunthorpe's avatar Jason Gunthorpe Committed by Greg Kroah-Hartman
Browse files

xen/gntdev: Use select for DMA_SHARED_BUFFER 



[ Upstream commit fa6614d8ef13c63aac52ad7c07c5e69ce4aba3dd ]

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: 932d6562 ("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: default avatarJuergen Gross <jgross@suse.com>
Reviewed-by: default avatarOleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
Signed-off-by: default avatarJason Gunthorpe <jgg@mellanox.com>
Signed-off-by: default avatarJuergen Gross <jgross@suse.com>
Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
parent 2c528fa3

drivers/xen/Kconfig

+2 −1
Original line number Diff line number Diff line
@@ -158,7 +158,8 @@ config XEN_GNTDEV 


config XEN_GNTDEV_DMABUF

	bool "Add support for dma-buf grant access device driver extension"

	depends on XEN_GNTDEV && XEN_GRANT_DMA_ALLOC && DMA_SHARED_BUFFER

	depends on XEN_GNTDEV && XEN_GRANT_DMA_ALLOC

	select DMA_SHARED_BUFFER

	help

	  Allows userspace processes and kernel modules to use Xen backed

	  dma-buf implementation. With this extension grant references to