Re: [Linux-ia64] Re: [PATCH] head.S fix for unusual load addrs

From: David Mosberger <davidm_at_napali.hpl.hp.com>
Date: 2003-05-09 08:53:50
>>>>> On Fri, 09 May 2003 08:17:35 +1000, Keith Owens <kaos@ocs.com.au> said:

  Keith> On Thu, 8 May 2003 10:07:49 -0700, 
  Keith> David Mosberger <davidm@napali.hpl.hp.com> wrote:
  >> If we do have to go the virtual remapping route, my preference would
  >> be to stick the kernel somewhere in region 5 (0xa..).  Has anyone
  >> tried that?  It should work fine in principle (modules already live in
  >> that space).

  Keith> That loses the alt[id]tlb handling for the kernel code and data.  Is
  Keith> that going to be a performance problem?

Should be OK: I'm assuming you'd use a single (large) pinned TLB entry
to map the entire kernel.  So no, if anything, performance improves
for the kernel itself.

	--david
Received on Thu May 08 15:55:25 2003

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