s390: introduce page_to_virt() and pfn_to_virt()

Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>

diff --git a/arch/s390/include/asm/page.h b/arch/s390/include/asm/page.h
index f874e7d51c191948c21f51481380c39c05a674a9..b5edff32e547b630ae50ecc8eeb51b5c0b25b1b8 100644 (file)
--- a/arch/s390/include/asm/page.h
+++ b/arch/s390/include/asm/page.h
@@ -147,6 +147,8 @@ static inline int devmem_is_allowed(unsigned long pfn)
 #define virt_to_page(kaddr)    pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
 #define page_to_phys(page)     (page_to_pfn(page) << PAGE_SHIFT)
 #define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
+#define pfn_to_virt(pfn)       __va((pfn) << PAGE_SHIFT)
+#define page_to_virt(page)     pfn_to_virt(page_to_pfn(page))
 
 #define VM_DATA_DEFAULT_FLAGS  (VM_READ | VM_WRITE | \
                                 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)