Ken, Can you please tell me why are the pud - pmd pointers are re-checked in "vhpt_miss" ? ld8 r26=[r17] // read *pmd again #ifdef CONFIG_PGTABLE_4 ld8 r19=[r28] // read *pud again #endif ... cmp.ne.or.andcm p6,p7=r26,r20 // did *pmd change #ifdef CONFIG_PGTABLE_4 cmp.ne.or.andcm p6,p7=r19,r29 // did *pud change #endif As far as I know, pud, pmd, pte pages can go away only via: free_pgtables() free_pgd_range() free_pud_range() free_pmd_range() free_pte_range() If a 0xa000... stuff goes away => BUG. For the user mode pages: "free_pgtables()" is called only from: - "exit_mmap()": we simply cannot have the chance to have a vhpt miss - "unmap_region()" calls "unmap_vmas()" before "free_pgtables()": again, we cannot fault in that region Have I missed something? Thanks, Zoltan - : send the line "unsubscribe linux-ia64" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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