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SubjectRe: flush_tlb_all in vmalloc_area_pages
   From: Andrea Arcangeli <>
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.

David S. Miller
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