xen/pdx: Introduce helper to convert MFN <-> PDX

This will avoid use of pfn_to_pdx(mfn_x(mfn)) over the code base.

Signed-off-by: Julien Grall <julien.grall@arm.com>
Reviewed-by: Wei Liu <wei.liu2@citrix.com>
Acked-by: Andrew Cooper <andrew.cooper3@citrix.com>

diff --git a/xen/include/xen/pdx.h b/xen/include/xen/pdx.h
index 4c56645c4c392b28885be9934327e2cb5097c30a..a151aac1a228cd02084b783b1d7a07456404178d 100644 (file)
--- a/xen/include/xen/pdx.h
+++ b/xen/include/xen/pdx.h
@@ -35,6 +35,9 @@ static inline unsigned long pdx_to_pfn(unsigned long pdx)
            ((pdx << pfn_pdx_hole_shift) & pfn_top_mask);
 }
 
+#define mfn_to_pdx(mfn) pfn_to_pdx(mfn_x(mfn))
+#define pdx_to_mfn(pdx) _mfn(pdx_to_pfn(pdx))
+
 extern void pfn_pdx_hole_setup(unsigned long);
 
 #endif /* HAS_PDX */