1 #ifndef _I386_TLBFLUSH_H
2 #define _I386_TLBFLUSH_H
5 #include <asm/processor.h>
7 #define __flush_tlb() xen_tlb_flush()
8 #define __flush_tlb_global() xen_tlb_flush()
9 #define __flush_tlb_all() xen_tlb_flush()
11 extern unsigned long pgkern_mask;
13 #define cpu_has_invlpg (boot_cpu_data.x86 > 3)
15 #define __flush_tlb_single(addr) xen_invlpg(addr)
17 #define __flush_tlb_one(addr) __flush_tlb_single(addr)
22 * - flush_tlb() flushes the current mm struct TLBs
23 * - flush_tlb_all() flushes all processes TLBs
24 * - flush_tlb_mm(mm) flushes the specified mm context TLB's
25 * - flush_tlb_page(vma, vmaddr) flushes one page
26 * - flush_tlb_range(vma, start, end) flushes a range of pages
27 * - flush_tlb_kernel_range(start, end) flushes a range of kernel pages
28 * - flush_tlb_pgtables(mm, start, end) flushes a range of page tables
30 * ..but the i386 has somewhat limited tlb flushing capabilities,
31 * and page-granular flushes are available only on i486 and up.
36 #define flush_tlb() __flush_tlb()
37 #define flush_tlb_all() __flush_tlb_all()
38 #define local_flush_tlb() __flush_tlb()
40 static inline void flush_tlb_mm(struct mm_struct *mm)
42 if (mm == current->active_mm)
46 static inline void flush_tlb_page(struct vm_area_struct *vma,
49 if (vma->vm_mm == current->active_mm)
50 __flush_tlb_one(addr);
53 static inline void flush_tlb_range(struct vm_area_struct *vma,
54 unsigned long start, unsigned long end)
56 if (vma->vm_mm == current->active_mm)
64 #define local_flush_tlb() \
67 extern void flush_tlb_all(void);
68 extern void flush_tlb_current_task(void);
69 extern void flush_tlb_mm(struct mm_struct *);
70 extern void flush_tlb_page(struct vm_area_struct *, unsigned long);
72 #define flush_tlb() flush_tlb_current_task()
74 static inline void flush_tlb_range(struct vm_area_struct * vma, unsigned long start, unsigned long end)
76 flush_tlb_mm(vma->vm_mm);
80 #define TLBSTATE_LAZY 2
84 struct mm_struct *active_mm;
86 char __cacheline_padding[L1_CACHE_BYTES-8];
88 DECLARE_PER_CPU(struct tlb_state, cpu_tlbstate);
93 #define flush_tlb_kernel_range(start, end) flush_tlb_all()
95 static inline void flush_tlb_pgtables(struct mm_struct *mm,
96 unsigned long start, unsigned long end)
98 /* i386 does not keep any page table caches in TLB */
101 #endif /* _I386_TLBFLUSH_H */