RE: [patch 0/4] ia64 SPARSEMEM

From: David Mosberger <davidm_at_napali.hpl.hp.com>
Date: 2005-06-02 08:48:54
>>>>> On Tue, 31 May 2005 11:14:22 -0700, Dave Hansen <haveblue@us.ibm.com> said:

  Dave> The pagetables that are walked in the TLB miss handler (for
  Dave> vmem_map[]) could just as easily be a set of two-level
  Dave> mem_section tables that are walked in software.

SPARSEMEM might be a lot more interesting if it could "degenerate"
into VIRTUAL_MEM_MAP.  That is, on platforms with enough virtual
space, you should be able to let the hardware/MMU-subsystem do the
translation.

	--david
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Received on Wed Jun 1 18:50:09 2005

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