Fix TLB gather virtual address range invalidation corner cases

[deliverable/linux.git] / arch / ia64 / include / asm / tlb.h

diff --git a/arch/ia64/include/asm/tlb.h b/arch/ia64/include/asm/tlb.h
index ef3a9de01954511a352fa5b24285136789425e21..bc5efc7c3f3f8ead3608780ba5e2f5b9e212e20c 100644 (file)
--- a/arch/ia64/include/asm/tlb.h
+++ b/arch/ia64/include/asm/tlb.h
@@ -22,7 +22,7 @@
  * unmapping a portion of the virtual address space, these hooks are called according to
  * the following template:
  *
- *     tlb <- tlb_gather_mmu(mm, full_mm_flush);       // start unmap for address space MM
+ *     tlb <- tlb_gather_mmu(mm, start, end);          // start unmap for address space MM
  *     {
  *       for each vma that needs a shootdown do {
  *         tlb_start_vma(tlb, vma);
@@ -58,6 +58,7 @@ struct mmu_gather {
        unsigned int            max;
        unsigned char           fullmm;         /* non-zero means full mm flush */
        unsigned char           need_flush;     /* really unmapped some PTEs? */
+       unsigned long           start, end;
        unsigned long           start_addr;
        unsigned long           end_addr;
        struct page             **pages;
@@ -155,13 +156,15 @@ static inline void __tlb_alloc_page(struct mmu_gather *tlb)
 
 
 static inline void
-tlb_gather_mmu(struct mmu_gather *tlb, struct mm_struct *mm, unsigned int full_mm_flush)
+tlb_gather_mmu(struct mmu_gather *tlb, struct mm_struct *mm, unsigned long start, unsigned long end)
 {
        tlb->mm = mm;
        tlb->max = ARRAY_SIZE(tlb->local);
        tlb->pages = tlb->local;
        tlb->nr = 0;
-       tlb->fullmm = full_mm_flush;
+       tlb->fullmm = !(start | (end+1));
+       tlb->start = start;
+       tlb->end = end;
        tlb->start_addr = ~0UL;
 }