generic: add phys_addr_t for holding physical addresses
Add a kernel-wide "phys_addr_t" which is guaranteed to be able to hold
any physical address. By default it equals the word size of the
architecture, but a 32-bit architecture can set ARCH_PHYS_ADDR_T_64BIT
if it needs a 64-bit phys_addr_t.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/include/linux/types.h b/include/linux/types.h
index d4a9ce6..022c668 100644
--- a/include/linux/types.h
+++ b/include/linux/types.h
@@ -197,6 +197,12 @@
typedef u32 resource_size_t;
#endif
+#ifdef CONFIG_PHYS_ADDR_T_64BIT
+typedef u64 phys_addr_t;
+#else
+typedef u32 phys_addr_t;
+#endif
+
struct ustat {
__kernel_daddr_t f_tfree;
__kernel_ino_t f_tinode;