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 #define cpu_has_invlpg (boot_cpu_data.x86 > 3)
13 #define __flush_tlb_single(addr) xen_invlpg(addr)
15 #define __flush_tlb_one(addr) __flush_tlb_single(addr)
20 * - flush_tlb() flushes the current mm struct TLBs
21 * - flush_tlb_all() flushes all processes TLBs
22 * - flush_tlb_mm(mm) flushes the specified mm context TLB's
23 * - flush_tlb_page(vma, vmaddr) flushes one page
24 * - flush_tlb_range(vma, start, end) flushes a range of pages
25 * - flush_tlb_kernel_range(start, end) flushes a range of kernel pages
26 * - flush_tlb_pgtables(mm, start, end) flushes a range of page tables
28 * ..but the i386 has somewhat limited tlb flushing capabilities,
29 * and page-granular flushes are available only on i486 and up.
34 #define flush_tlb() __flush_tlb()
35 #define flush_tlb_all() __flush_tlb_all()
36 #define local_flush_tlb() __flush_tlb()
38 static inline void flush_tlb_mm(struct mm_struct *mm)
40 if (mm == current->active_mm)
44 static inline void flush_tlb_page(struct vm_area_struct *vma,
47 if (vma->vm_mm == current->active_mm)
48 __flush_tlb_one(addr);
51 static inline void flush_tlb_range(struct vm_area_struct *vma,
52 unsigned long start, unsigned long end)
54 if (vma->vm_mm == current->active_mm)
62 #define local_flush_tlb() \
65 extern void flush_tlb_all(void);
66 extern void flush_tlb_current_task(void);
67 extern void flush_tlb_mm(struct mm_struct *);
68 extern void flush_tlb_page(struct vm_area_struct *, unsigned long);
70 #define flush_tlb() flush_tlb_current_task()
72 static inline void flush_tlb_range(struct vm_area_struct * vma, unsigned long start, unsigned long end)
74 flush_tlb_mm(vma->vm_mm);
78 #define TLBSTATE_LAZY 2
82 struct mm_struct *active_mm;
84 char __cacheline_padding[L1_CACHE_BYTES-8];
86 DECLARE_PER_CPU(struct tlb_state, cpu_tlbstate);
91 #define flush_tlb_kernel_range(start, end) flush_tlb_all()
93 static inline void flush_tlb_pgtables(struct mm_struct *mm,
94 unsigned long start, unsigned long end)
96 /* i386 does not keep any page table caches in TLB */
99 #endif /* _I386_TLBFLUSH_H */