Recent versions of pxeboot hang/panic on AMD platform.

[Danny Braniss]

> On Thu, Mar 19, 2009 at 11:04:48AM -0400, John Baldwin wrote:
> > On Friday 21 November 2008 6:41:04 pm Luigi Rizzo wrote:
> ...
> > > Assuming that the interrupt thing is a possible cause for the bug,
> > > I can understand that the kernel size can affect the probability of
> > > getting an interrupt at the wrong time.
> > > 
> > > There was one bug due to memory overflow that i fixed in a recent
> > > commit to head (see boot/common/interp.c),
> > > but this only helped on a different amd64 motherboard.
> > 
> > Is this now resolved with the latest pxeboot from HEAD?
> 
> I can confirm that with today's code (20090320) both HEAD and RELENG_7
> produce a pxeboot that works reliably on the dual-core AMD CPU and motherboard
> where previous loaders failed.
> 

In my case, I have lost the serial port somehow, no console output, nor
login, have to explore but hints could be useful.

	danny

> thanks!
> 
> luigi
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