powerpc64 memory translations

[Justin Hibbits]

Hmm.  It looks like something must have been messed up with firewire,
because redoing it it now looks right.

- Justin

On Wed, 11 Dec 2013 07:31:54 -0600
Nathan Whitehorn <nwhitehorn at freebsd.org> wrote:

> Where does it write instead? powerpc64 uses a 1:1 direct map of all  
> physical memory. powerpc32 sometimes, but not always, does this.
> -Nathan
> 
> On Dec 11, 2013, at 12:35 AM, Justin Hibbits wrote:
> 
> > I'm trying to fix a problem with DTrace FBT (it just flat hangs),
> > and want to use the oldest trick in the book -- writing to a known
> > address at various points.  Problem I have, though, is that writing
> > to 0x10 virtual, unlike with powerpc32, doesn't write to 0x10
> > physical.  Is there any way to get the mapping for the first page
> > of physical memory,
> > so I can do this debugging?  And to make it always available, so
> > that I don't have to worry about mapping it when I need to?
> >
> > Thanks,
> > Justin
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