Re: [Linux-ia64] Software IO-TLB Kernel panic

From: David Mosberger <>
Date: 2001-05-18 04:49:03
>>>>> On Thu, 17 May 2001 19:40:17 +0200 (CEST), Martin Wilck <> said:

  Martin> The kernel panic occurs in map_single
  Martin> (arch/ia64/lib/swiotlb.c:171).
  >>  Sounds like the driver is trying to map buffers that are bigger
  >> than (1 << IO_TLB_SHIFT) (currently 2KB).

  Martin> I looked at the code and thought that bigger buffers than
  Martin> 2kB can (in principle) be created by joining subsequent
  Martin> buffers.  Of course, it could happen that no such contiguous
  Martin> space is available.  Am I wrong ?

Yes, you're right.  I forgot about the joining.

Received on Thu May 17 11:52:44 2001

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