Re: [GIT RFC] percpu: use dynamic percpu allocator as the default percpu allocator

David Miller
2009-04-01T08:54:19Z

From: Martin Schwidefsky <schwidefsky@de.ibm.com>
Date: Wed, 1 Apr 2009 10:47:37 +0200

> We have thought about that solution as well but it not really a good
> one. For a machine with more than 4GB of memory we would either loose
> the memory that overlaps with the module area or we'd have to play
> nasty remapping tricks. On s390 the kernel image is linked to address 0
> (PAGE_OFFSET==0) and we have a simple 1:1 mapping for all real memory.

Flexibility can often cost you a few TLB entries, but that's
life :-)