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| author | Ingo Molnar <mingo@elte.hu> | 2009-03-13 03:20:49 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-03-13 03:24:53 +0100 |
| commit | dd63fdcc63f0f853b116b52e56200a0e0227cf5f (patch) | |
| tree | 85cd311ae655787164c7c1247478a69bc251a147 /arch/x86/mm/iomap_32.c | |
| parent | x86: debug check for kmap_atomic_pfn and iomap_atomic_prot_pfn() (diff) | |
| download | linux-dd63fdcc63f0f853b116b52e56200a0e0227cf5f.tar.xz linux-dd63fdcc63f0f853b116b52e56200a0e0227cf5f.zip | |
x86: unify kmap_atomic_pfn() and iomap_atomic_prot_pfn(), fix
Impact: build fix
Move kmap_atomic_prot_pfn() to iomap_32.c. It is used on all 32-bit
kernels, while highmem_32.c is only built on highmem kernels.
( Note: the debug_kmap_atomic_prot() check is removed for now, that
problem is handled via another patch. )
Reported-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Akinobu Mita <akinobu.mita@gmail.com>
LKML-Reference: <20090311143317.GA22244@localhost.localdomain>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/mm/iomap_32.c')
| -rw-r--r-- | arch/x86/mm/iomap_32.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/arch/x86/mm/iomap_32.c b/arch/x86/mm/iomap_32.c index 592984e5496b..6e60ba698cee 100644 --- a/arch/x86/mm/iomap_32.c +++ b/arch/x86/mm/iomap_32.c @@ -32,7 +32,23 @@ int is_io_mapping_possible(resource_size_t base, unsigned long size) } EXPORT_SYMBOL_GPL(is_io_mapping_possible); -/* Map 'pfn' using fixed map 'type' and protections 'prot' +void *kmap_atomic_prot_pfn(unsigned long pfn, enum km_type type, pgprot_t prot) +{ + enum fixed_addresses idx; + unsigned long vaddr; + + pagefault_disable(); + + idx = type + KM_TYPE_NR * smp_processor_id(); + vaddr = __fix_to_virt(FIX_KMAP_BEGIN + idx); + set_pte(kmap_pte - idx, pfn_pte(pfn, prot)); + arch_flush_lazy_mmu_mode(); + + return (void *)vaddr; +} + +/* + * Map 'pfn' using fixed map 'type' and protections 'prot' */ void * iomap_atomic_prot_pfn(unsigned long pfn, enum km_type type, pgprot_t prot) |