[Xen-devel] [PATCH 14/24] xen/arm: Introduce wrappers for MFN <-> MADDR and GFN <-> GADDR

[Julien Grall <julien.grall@xxxxxxx>]

The new wrappers will add more safety when converting an address to a
frame number (either machine or guest). A follow-up patch will use them
to simplify the code.

Signed-off-by: Julien Grall <julien.grall@xxxxxxx>
---
 xen/include/asm-arm/mm.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/xen/include/asm-arm/mm.h b/xen/include/asm-arm/mm.h
index cc3220a6b7..a42da20f0a 100644
--- a/xen/include/asm-arm/mm.h
+++ b/xen/include/asm-arm/mm.h
@@ -214,6 +214,10 @@ static inline void __iomem *ioremap_wc(paddr_t start, 
size_t len)
 #define pfn_to_paddr(pfn) ((paddr_t)(pfn) << PAGE_SHIFT)
 #define paddr_to_pfn(pa)  ((unsigned long)((pa) >> PAGE_SHIFT))
 #define paddr_to_pdx(pa)    pfn_to_pdx(paddr_to_pfn(pa))
+#define gfn_to_gaddr(gfn)   pfn_to_paddr(gfn_x(gfn))
+#define gaddr_to_gfn(ga)    _gfn(paddr_to_pfn(ga))
+#define mfn_to_maddr(mfn)   pfn_to_paddr(mfn_x(mfn))
+#define maddr_to_mfn(ma)    _mfn(paddr_to_pfn(ma))
 #define vmap_to_mfn(va)     paddr_to_pfn(virt_to_maddr((vaddr_t)va))
 #define vmap_to_page(va)    mfn_to_page(vmap_to_mfn(va))
 
-- 
2.11.0


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