Re: pages already locked on ia64

From: David Mosberger <davidm_at_napali.hpl.hp.com>
Date: 2003-11-18 10:40:25
>>>>> On Fri, 14 Nov 2003 11:22:23 +0100, Christian Hinkelbein <hinkelbein@ti.uni-mannheim.de> said:

  Christian> Hi, i have the need to lock malloc'ed user mem between
  Christian> kernel calls.

  Christian> On ia32 i succesfully do a lock_page() on every page
  Christian> returned by get_user_pages(), lateron i do unlock_page().
  Christian> On ia64 sometimes (on ia32 seemingly never) the first
  Christian> page is already locked, just after malloc().  For a quick
  Christian> hack i check all pages before trying to lock them, so
  Christian> that i am later just unlocking the not previously locked
  Christian> ones.

Umh, what page-size did you use?

In any case, a minimal test-program that reproduces the problem would
probably help you get an answer much faster.

Thanks,

	--david
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Received on Mon Nov 17 18:42:52 2003

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