From: David Mosberger <davidm@napali.hpl.hp.com>
To: linux-ia64@vger.kernel.org
Subject: Re: [PATCH] always print note when trimming EFI memory map
Date: Fri, 26 Sep 2003 20:32:45 +0000 [thread overview]
Message-ID: <marc-linux-ia64-106460850320409@msgid-missing> (raw)
In-Reply-To: <marc-linux-ia64-106444761123807@msgid-missing>
>>>>> 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
next prev parent reply other threads:[~2003-09-26 20:32 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-09-24 23:53 [PATCH] always print note when trimming EFI memory map Bjorn Helgaas
2003-09-26 20:32 ` David Mosberger [this message]
2003-09-26 21:07 ` Bjorn Helgaas
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