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authorIngo Molnar <mingo@elte.hu>2009-03-13 05:20:49 +0300
committerIngo Molnar <mingo@elte.hu>2009-03-13 05:24:53 +0300
commitdd63fdcc63f0f853b116b52e56200a0e0227cf5f (patch)
tree85cd311ae655787164c7c1247478a69bc251a147 /arch/x86/mm/iomap_32.c
parent12074fa1073013dd11f1cff41db018d5cff4ecd9 (diff)
downloadlinux-dd63fdcc63f0f853b116b52e56200a0e0227cf5f.tar.xz
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.c18
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)