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authorPeter Zijlstra <a.p.zijlstra@chello.nl>2009-06-15 12:40:41 +0200
committerIngo Molnar <mingo@elte.hu>2009-06-15 15:57:52 +0200
commit3ff0141aa3a03ca3388b40b36167d0a37919f3fd (patch)
tree9101842f3cf1ca5f69857586bc6feb247ff6d494 /arch/x86
parent465a454f254ee2ff7acc4aececbe31f8af046bc0 (diff)
x86: Add NMI types for kmap_atomic
Two new kmap_atomic slots for NMI context. And teach pte_offset_map() about NMI context. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> CC: Nick Piggin <npiggin@suse.de> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86')
-rw-r--r--arch/x86/include/asm/kmap_types.h4
-rw-r--r--arch/x86/include/asm/pgtable_32.h5
2 files changed, 6 insertions, 3 deletions
diff --git a/arch/x86/include/asm/kmap_types.h b/arch/x86/include/asm/kmap_types.h
index 5759c165a5c..ff00a44b7d0 100644
--- a/arch/x86/include/asm/kmap_types.h
+++ b/arch/x86/include/asm/kmap_types.h
@@ -21,7 +21,9 @@ D(9) KM_IRQ0,
D(10) KM_IRQ1,
D(11) KM_SOFTIRQ0,
D(12) KM_SOFTIRQ1,
-D(13) KM_TYPE_NR
+D(13) KM_NMI,
+D(14) KM_NMI_PTE,
+D(15) KM_TYPE_NR
};
#undef D
diff --git a/arch/x86/include/asm/pgtable_32.h b/arch/x86/include/asm/pgtable_32.h
index 31bd120cf2a..85464971bca 100644
--- a/arch/x86/include/asm/pgtable_32.h
+++ b/arch/x86/include/asm/pgtable_32.h
@@ -49,13 +49,14 @@ extern void set_pmd_pfn(unsigned long, unsigned long, pgprot_t);
#endif
#if defined(CONFIG_HIGHPTE)
+#define __KM_PTE (in_nmi() ? KM_NMI_PTE : KM_PTE0)
#define pte_offset_map(dir, address) \
- ((pte_t *)kmap_atomic_pte(pmd_page(*(dir)), KM_PTE0) + \
+ ((pte_t *)kmap_atomic_pte(pmd_page(*(dir)), __KM_PTE) + \
pte_index((address)))
#define pte_offset_map_nested(dir, address) \
((pte_t *)kmap_atomic_pte(pmd_page(*(dir)), KM_PTE1) + \
pte_index((address)))
-#define pte_unmap(pte) kunmap_atomic((pte), KM_PTE0)
+#define pte_unmap(pte) kunmap_atomic((pte), __KM_PTE)
#define pte_unmap_nested(pte) kunmap_atomic((pte), KM_PTE1)
#else
#define pte_offset_map(dir, address) \