Strange messages

[Gregory Nowak]

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Ok, let me attempt to correct some misinformation here.

Turning off DMA is a bad idea, since it can really slow the system
down. Also, I don't see how disabling DMA would solve the issues Dan
has described. As far as I know, whether DMA is disabled or not, has
nothing to do with how the kernel detects memory, that information is
provided by the BIOS, and has nothing to do with DMA.

You do not, I repeat, do not, want to enable extra kallsyms pass when
configuring the kernel. If you would have bothered to read the help
for it, you'd see the following:

"If kallsyms is not working correctly, the build will fail with
inconsistent kallsyms data.  If that occurs, log a bug report and
turn on KALLSYMS_EXTRA_PASS which should result in a stable build.
Always say N here unless you find a bug in kallsyms, which must be
reported.  KALLSYMS_EXTRA_PASS is only a temporary workaround while
you wait for kallsyms to be fixed."

I'm running linux on 4 machines here, with extra kallsyms disabled on
all of them, and am having no issues. If you actually enabled extra
kallsyms, and found that it solved whatever problems you were having,
you really haven't solved anything, and your hardware problem will
bite you in some other way sooner or later. 

If you're going to give advise, I'd suggest you read up on the subject
matter before advising on it.

Greg


On Mon, Dec 25, 2006 at 07:49:23AM -0600, randy turner wrote:
> hi dan,
> how much memory does that computer have?
> and do you have a swap partision?
> also if you are compiling a kernel you might want to turn off the dma.
> but i have found that a 2.6 kernel detects memory a lot better.
> if you are compiling a kernel tell the kernel to do  an extra kallsyms pass
> thiswill be under Configure standard kernel features (for small systems in 
> the 2.6.18.1 kernel
> hope this helps some.
> randy



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