From: Peter Zijlstra Date: Mon, 15 Jun 2009 10:40:41 +0000 (+0200) Subject: x86: Add NMI types for kmap_atomic X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=3ff0141aa3a03ca3388b40b36167d0a37919f3fd;p=linux-beck.git 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 CC: Nick Piggin Cc: Mike Galbraith Cc: Paul Mackerras Cc: Arnaldo Carvalho de Melo Signed-off-by: Ingo Molnar --- 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) \