[syslinux] Memory upgrade breaks net boot (PXE + NFS Root)

[H. Peter Anvin]

Geert Stappers wrote:
>>>
>> Given that this is happening over a range of machines I would guess 
>> memory bus overloading is probably the most likely cause.  Downclocking 
>> the memory might be an interesting experiment.
> 
> I do hope that is possible.
> Also I wonder what the impact on performance will be.
> 
> And then is there the NIC fighting for the memory bus.
> 
> My advice is to contact the hardware vendor about the issue.
> He might confirm that the NIC indeed uses main memory.
> 

If the NIC uses unreserved main memory that is a major defect in the PXE 
stack.  It would be *very* interesting to figure out what *their* 
concept is of how the NBP is supposed to know about it.

Now, I don't see how that would have worked *before* the memory upgrade...

	-hpa