From: Jason Gunthorpe jgg@mellanox.com
[ 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: 932d6562179e ("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 --- drivers/xen/Kconfig | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/xen/Kconfig b/drivers/xen/Kconfig index 79cc75096f42..a50dadd01093 100644 --- a/drivers/xen/Kconfig +++ b/drivers/xen/Kconfig @@ -141,7 +141,8 @@ 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