Re: port-i386/42966: kernel built from today's netbsd-5 crashes

[christos%zoulas.com@localhost (Christos Zoulas)]

On Mar 17, 11:40pm, anne%porcupine.montreal.qc.ca@localhost (Anne Bennett) 
wrote:
-- Subject: Re: port-i386/42966: kernel built from today's netbsd-5 crashes

| 
| Matthew,
| 
| Thanks for looking into this.
| 
| > it comes from this call in i915_dma.c:
| > 
| >     drm_pci_alloc(dev, PAGE_SIZE, PAGE_SIZE, 0xffffffff);
| > 
| > and the final argument is passed as the boundary.  notice how it is
| > not a power of two?  it really wants to be 0x1.0000.0000.
| > 
| > anne, david, can one of you try changing this to 0?  or if you have
| > 2GB of ram or less, try 0x80000000...
| 
| Kernel says:
|   total memory = 2038 MB
|   avail memory = 1991 MB
| 
| Any preference as to whether I try 0x80000000 or 0x0 (to replace
| 0xffffffff, I assume)?  Which one are you hoping to patch to in
| the end?
| 
| Meanwhile, I have two files "i915_dma.c" with different contents:
|    (1) /usr/src/sys/dev/pci/drm/i915_dma.c
|    (2) /usr/src/sys/external/bsd/drm/dist/shared-core/i915_dma.c

See revision 1.2 of that file which explains what is going on. Drochner backed
it out for some reason...

christos