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| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2009-06-15 12:40:41 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-06-15 15:57:52 +0200 |
| commit | 3ff0141aa3a03ca3388b40b36167d0a37919f3fd (patch) | |
| tree | 9101842f3cf1ca5f69857586bc6feb247ff6d494 | |
| parent | 465a454f254ee2ff7acc4aececbe31f8af046bc0 (diff) | |
| download | linux-3ff0141aa3a03ca3388b40b36167d0a37919f3fd.tar.gz linux-3ff0141aa3a03ca3388b40b36167d0a37919f3fd.tar.bz2 linux-3ff0141aa3a03ca3388b40b36167d0a37919f3fd.zip | |
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>
| -rw-r--r-- | arch/x86/include/asm/kmap_types.h | 4 | ||||
| -rw-r--r-- | arch/x86/include/asm/pgtable_32.h | 5 |
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 5759c165a5cf..ff00a44b7d0d 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 31bd120cf2a2..85464971bca0 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) \ |