Re: [PATCH] always print note when trimming EFI memory map

From: David Mosberger <davidm_at_napali.hpl.hp.com>
Date: 2003-09-27 06:32:45
>>>>> On Wed, 24 Sep 2003 17:53:14 -0600, Bjorn Helgaas <bjorn.helgaas@hp.com> said:

  Bjorn> I think it would be a good idea to always print a note when
  Bjorn> trimming the EFI memory map, even if it's not "available"
  Bjorn> memory.

  Bjorn> I just debugged a problem where we trimmed out some memory
  Bjorn> that contained ACPI tables.  When we went to look at a table
  Bjorn> later, we used the wrong attribute because we couldn't find
  Bjorn> its address in the EFI memory map.  This caused an MCA
  Bjorn> (uncached access to memory).  Straightforward to debug, but
  Bjorn> the note would have made it quicker.

The intention was to give the user an idea how much real & available
memory is lost due to the trimming.  When reporting unavailable
memory, you'll lose that info.  However, maybe we should be more
verbose if EFI_DEBUG is enabled?

	--david
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Received on Fri Sep 26 16:35:03 2003

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