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

David Mosberger
2003-05-08T22:53:50Z

>>>>> 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