diff options
author | Jeremy Fitzhardinge <jeremy@goop.org> | 2008-09-11 04:31:45 -0400 |
---|---|---|
committer | Ingo Molnar <mingo@elte.hu> | 2008-09-14 11:24:25 -0400 |
commit | 600715dcdf567c86f8b2c6173fcfb4b873e25a19 (patch) | |
tree | c2f3ed1c928d3cc47af0573b56c8da2f1df880a0 /mm | |
parent | 9dfed08eb4086584205717894177a9ee930c88c4 (diff) |
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>
Diffstat (limited to 'mm')
-rw-r--r-- | mm/Kconfig | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/mm/Kconfig b/mm/Kconfig index 0bd9c2dbb2a0..91ee3922510a 100644 --- a/mm/Kconfig +++ b/mm/Kconfig | |||
@@ -187,6 +187,9 @@ config RESOURCES_64BIT | |||
187 | help | 187 | help |
188 | This option allows memory and IO resources to be 64 bit. | 188 | This option allows memory and IO resources to be 64 bit. |
189 | 189 | ||
190 | config PHYS_ADDR_T_64BIT | ||
191 | def_bool 64BIT || ARCH_PHYS_ADDR_T_64BIT | ||
192 | |||
190 | config ZONE_DMA_FLAG | 193 | config ZONE_DMA_FLAG |
191 | int | 194 | int |
192 | default "0" if !ZONE_DMA | 195 | default "0" if !ZONE_DMA |