Re: flush_tlb_all in vmalloc_area_pages

[David S. Miller]

   From: Andrea Arcangeli <[e-mail]>
   Date: Fri, 7 Sep 2001 16:56:12 +0200
   
   For the flush_cache_all for the virtually indexed caches should be the
   same issue in theory (at least the kmap logic only needs to flush the
   caches before the unmapping [not before the mapping] too)
   
   Am I missing something, Dave?

Anything that creates or takes away vmalloc() mappings needs to flush
the data cache if it is virtuall indexed.

I am always uncomfortable when I see people suggesting to remove
flushes from kernel virtual mapping setup/teardown.

Later,
David S. Miller
[e-mail]