diff options
| author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2009-03-13 21:44:51 +0000 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2009-03-13 21:44:51 +0000 |
| commit | 97fb44eb6bc01f4ffed4300e475aa15e44877375 (patch) | |
| tree | 481ed6efd0babe7185cae04f2fd295426b36411d /arch/x86/mm/iomap_32.c | |
| parent | e4707dd3e9d0cb57597b6568a5e51fea5d6fca41 (diff) | |
| parent | 148854c65ea8046b045672fd49f4333aefaa3ab5 (diff) | |
Merge branch 'for-rmk' of git://git.pengutronix.de/git/imx/linux-2.6 into devel
Conflicts:
arch/arm/mach-at91/gpio.c
Diffstat (limited to 'arch/x86/mm/iomap_32.c')
| -rw-r--r-- | arch/x86/mm/iomap_32.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/x86/mm/iomap_32.c b/arch/x86/mm/iomap_32.c index ca53224fc56c..04102d42ff42 100644 --- a/arch/x86/mm/iomap_32.c +++ b/arch/x86/mm/iomap_32.c @@ -20,6 +20,17 @@ #include <asm/pat.h> #include <linux/module.h> +int is_io_mapping_possible(resource_size_t base, unsigned long size) +{ +#ifndef CONFIG_X86_PAE + /* There is no way to map greater than 1 << 32 address without PAE */ + if (base + size > 0x100000000ULL) + return 0; +#endif + return 1; +} +EXPORT_SYMBOL_GPL(is_io_mapping_possible); + /* Map 'pfn' using fixed map 'type' and protections 'prot' */ void * |