From: Paul Mackerras <paulus@samba.org>
Date: Tue, 21 May 2002 22:18:42 +1000 (EST)
I still need tlb_end_vma in this case - or at least I need a hook
that gets called after all the tlb_remove_tlb_entry calls are done but
before clear_page_tables is called. If I had that hook (called in
both the exit_mmap and unmap cases) then I would not need the
tlb_start/end_vma hooks.
You get called via pte_free_tlb() and pmd_free_tlb() for every
operation performed by clear_page_tables(). The PTEs themselves are
all cleared out at the point that clear_page_tables, so you can't
possibly need the PTE contents. I am assuming therefore you just
need to get at the linkage, and those two pte/pmd hooks give you
that.
-
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