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generic: add phys_addr_t for holding physical addresses

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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>
This commit is contained in:
Jeremy Fitzhardinge 2008-09-11 01:31:45 -07:00 • committed by Ingo Molnar
parent 9dfed08eb4
commit 600715dcdf
7 changed files with 15 additions and 10 deletions
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6
include/linux/types.h
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@ -197,6 +197,12 @@ typedef u64 resource_size_t;
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;