Re: [Xen-devel] [RFC 08/19] xen/dts: Provide an helper to get a DT node from a path provided by a guest

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Mon, 2014-06-16 at 17:17 +0100, Julien Grall wrote:
> Signed-off-by: Julien Grall <julien.grall@xxxxxxxxxx>
> ---
>  xen/common/device_tree.c      |   19 +++++++++++++++++++
>  xen/include/xen/device_tree.h |   17 +++++++++++++++++
>  2 files changed, 36 insertions(+)
> 
> diff --git a/xen/common/device_tree.c b/xen/common/device_tree.c
> index 4736e0d..fd95307 100644
> --- a/xen/common/device_tree.c
> +++ b/xen/common/device_tree.c
> @@ -13,6 +13,7 @@
>  #include <xen/config.h>
>  #include <xen/types.h>
>  #include <xen/init.h>
> +#include <xen/guest_access.h>
>  #include <xen/device_tree.h>
>  #include <xen/kernel.h>
>  #include <xen/lib.h>
> @@ -661,6 +662,24 @@ struct dt_device_node *dt_find_node_by_path(const char 
> *path)
>      return np;
>  }
>  
> +int dt_find_node_by_gpath(XEN_GUEST_HANDLE(char) u_path, uint32_t u_plen,
> +                          struct dt_device_node **node)

My initial feeling is that this should be a static helper in whichever
file is using this rather than part of the "dt library" interface.

Ian.


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