re: Hackathon6: OEA PowerPC Hackathon

[matthew green <mrg%eterna.com.au@localhost>]

   On Monday 30 April 2007 04:07, Jason Thorpe wrote:
   > On Apr 29, 2007, at 8:29 AM, Frank Wille wrote:
   > > Tim Rightnour wrote:
   > >> On 28-Apr-2007 Frank Wille wrote:
   > >>> Yes, that would be helpful. I stopped my work on NetBSD/amigappc
   > >>> some
   > >>> weeks ago, because scanning the SCSI devices just returned empty
   > >>> name-strings, for the devices found on the bus. No idea why.
   > >>
   > >> Do you have dmesg or examples of this happening?
   > >
   > > No serial console at the moment, so I have to type the screen
   > > output. But
   > > the relevant part in my current development version looks like this:
   >
   > This, and the other messages about "fabricating" typically indicate
   > that your bus_dma back-end is broken.
   
   In my case (hp700) the problem was that a pmap_extract of a kernel stack va 
   was failing. I fixed it in pmap_bootstrap by pmap_kenter_pa'ing the kernel 
   stack.

we had exactly the same problem on sparc64 and MP kernels --
pmap_extract() didn't work for the kernel stack.


.mrg.