Re: CVS commit: src/sys/arch

[Thor Lancelot Simon <tls%netbsd.org@localhost>]

On Sun, Dec 04, 2011 at 04:24:13PM +0000, Chuck Silvers wrote:
> Module Name:  src
> Committed By: chs
> Date:         Sun Dec  4 16:24:13 UTC 2011
> 
> Modified Files:
>       src/sys/arch/amd64/amd64: locore.S machdep.c
>       src/sys/arch/amd64/include: types.h
>       src/sys/arch/x86/include: pmap.h
>       src/sys/arch/x86/x86: pmap.c
> 
> Log Message:
> map all of physical memory using large pages.
> ported from openbsd years ago by Murray Armfield,
> updated for changes since then by me.

This change causes my 2-cpu, x86-64 VirtualBox VM to hang hard
immediately on boot, regardless of how I build the kernel.  If I build
the kernel with DEBUG, it hangs immediately after printing
"kernel text is mapped with 6 large pages and 442 normal pages".

In fact, it hangs so hard that it makes VirtualBox throw a fatal error
when I try to reset the VM.

I understand this change is _not_ causing trouble for some others, but
it sure does for me.  Can we back it out temporarily, and what can I
offer by way of help in debugging it?

Thor