Re: remap allocator for per-CPU memory

From: Tejun Heo
Date: Tue May 12 2009 - 11:43:54 EST


Jan Beulich wrote:
> Didn't the addition of this allocator introduce another case that
> needs special treatment in pageattr.c? Since large pages are used
> for mapping the allocated memory, but only part of the initially
> allocated large pages are actually retained, there's now the
> potential for TLB aliases with different cache attributes for those
> parts of these pages that get passed back through free_bootmem().

Hmmm.... yes, the large page mapping and the returned part of it would
alias each other. What changes should be made for it? Dunno much
about how pageattr works.

Thanks.

--
tejun
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