Recent versions of pxeboot hang/panic on AMD platform.

[Andrew Thompson]

On Sat, Nov 22, 2008 at 12:14:00AM +0100, Luigi Rizzo wrote:
> [copying some people involved with recent related commits]
> 
> As reported in  kern/118222 recent versions of pxeboot hang/panic
> on AMD platform.
> 
> Initial reports mentioned that the RELENG_6 versions worked well,
> however i found out that even the recent RELENG_6 code is problematic.
> 
> Specifically, the problem i see on two machines with AMD CPU (one
> is an Asus M2N-VM) motherboard netbooting with PXEboot, is that the
> loading of config files or binary modules (kernel, etc.) randomly
> hangs with recent version of pxeboot (RELENG_6, RELENG_7 and HEAD
> all give the same behaviour).

I have found that the kernel size can trigger this for me, after
reducing the size I didnt experience loader hangs with pxe. You may want
to experiment with this in your investigations.


Andrew