Re: More E820 brokenness

From: Jordan Crouse
Date: Thu Sep 27 2007 - 19:16:56 EST

On 27/09/07 15:47 -0700, H. Peter Anvin wrote:
> Jordan Crouse wrote:
> >
> > Breaks on the Geode - original behavior.
> >
> > I think that having boot_prams.e820_entries != 0 makes the kernel
> > assume the e820 data is correct.
> >
> Okay, now I'm utterly baffled how 2.6.22 ever worked on this Geode,
> because this, to the best of my reading, mimics the 2.6.22 behavior
> exactly. DID IT REALLY, and/or did you make any kind of configuration
> changes?

I copied in a 2.6.22 kernel to see that it really did work, and it did.
But here's the crazy part - I did a dmesg, and it looks like it
*is* using e820 data, and it looks complete (I see the entire map -
including the ACPI and reserved blocks way up high).

So apparently it was the 2.6.22 code that was buggy, but reading it,
I don't immediately see how.

Jordan Crouse
Systems Software Development Engineer
Advanced Micro Devices, Inc.

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