Re: [Xen-devel] [PATCH v5.1 5/8] xen: move xc_interface compatibility fallback further up the file

[Stefano Stabellini <sstabellini@xxxxxxxxxx>]

On Fri, 20 Oct 2017, Ian Jackson wrote:
> We are going to want to use the dummy xendevicemodel_handle type in
> new stub functions in the CONFIG_XEN_CTRL_INTERFACE_VERSION < 41000
> section.  So we need to provide that definition, or (as applicable)
> include the appropriate header, earlier in the file.
> 
> (Ideally the newer compatibility layers would be at the bottom of the
> file, so that they can naturally benefit from the compatibility layers
> for earlier version.  But that's rather too much for this series.)
> 
> No functional change.
> 
> Signed-off-by: Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>
> Acked-by: Anthony PERARD <anthony.perard@xxxxxxxxxx>

Acked-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>


> ---
> v2: New patch in v2 of the series
> ---
>  include/hw/xen/xen_common.h | 18 +++++++++++-------
>  1 file changed, 11 insertions(+), 7 deletions(-)
> 
> diff --git a/include/hw/xen/xen_common.h b/include/hw/xen/xen_common.h
> index 3f44a63..8efdb8a 100644
> --- a/include/hw/xen/xen_common.h
> +++ b/include/hw/xen/xen_common.h
> @@ -78,6 +78,17 @@ static inline void *xenforeignmemory_map(xc_interface *h, 
> uint32_t dom,
>  
>  extern xenforeignmemory_handle *xen_fmem;
>  
> +#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 40900
> +
> +typedef xc_interface xendevicemodel_handle;
> +
> +#else /* CONFIG_XEN_CTRL_INTERFACE_VERSION >= 40900 */
> +
> +#undef XC_WANT_COMPAT_DEVICEMODEL_API
> +#include <xendevicemodel.h>
> +
> +#endif
> +
>  #if CONFIG_XEN_CTRL_INTERFACE_VERSION < 41000
>  
>  #define XEN_COMPAT_PHYSMAP
> @@ -105,8 +116,6 @@ static inline int xentoolcore_restrict_all(domid_t domid)
>  
>  #if CONFIG_XEN_CTRL_INTERFACE_VERSION < 40900
>  
> -typedef xc_interface xendevicemodel_handle;
> -
>  static inline xendevicemodel_handle *xendevicemodel_open(
>      struct xentoollog_logger *logger, unsigned int open_flags)
>  {
> @@ -228,11 +237,6 @@ static inline int xendevicemodel_set_mem_type(
>      return xc_hvm_set_mem_type(dmod, domid, mem_type, first_pfn, nr);
>  }
>  
> -#else /* CONFIG_XEN_CTRL_INTERFACE_VERSION >= 40900 */
> -
> -#undef XC_WANT_COMPAT_DEVICEMODEL_API
> -#include <xendevicemodel.h>
> -
>  #endif
>  
>  extern xendevicemodel_handle *xen_dmod;
> -- 
> 2.1.4
> 

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