From: Julien Grall Date: Tue, 13 Jun 2017 16:13:13 +0000 (+0100) Subject: xen/arm: Introduce wrappers for MFN <-> MADDR and GFN <-> GADDR X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=b110455f4281d555f2f98393e805c4b45a3743a5;p=people%2Fiwj%2Fxen.git xen/arm: Introduce wrappers for MFN <-> MADDR and GFN <-> GADDR 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 Reviewed-by: Stefano Stabellini --- 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))