[Intel-gfx] DMAR regression in 2.6.37

[Dave Airlie]

On Mon, Jan 10, 2011 at 4:10 PM, Dave Airlie <airlied at gmail.com> wrote:
> On Mon, Jan 10, 2011 at 12:46 PM, Dave Airlie <airlied at gmail.com> wrote:
>> Hi guys,
>>
>> I bisected down to
>>
>> commit 450f2b3d51025a1749b694ee13f0e4e23ed58750
>> Author: Daniel Vetter <daniel.vetter at ffwll.ch>
>> Date:   Sat Sep 11 23:48:25 2010 +0200
>>
>>    intel-gtt: generic (insert|remove)_entries for g33/i965
>>
>>    Like for the i915.
>>
>>    Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch>
>>    Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
>>
>> Before this point I get no DMAR, after this I get DMAR, which isn't
>> surprising since this commit is the one that removes the calls to the
>> map/unmap via PCI layer calls.
>>
>
> This one is proving quite hard to nail down, I've been reading over
> the codepaths and can't spot the major problem with it.
>
> The code seq in these patches is a bit off in places, i.e. it removes
> scratch page stuff but then still needs it in the i915_remove_entries
> patch, so I've moved the bisection around a bit, but I can't get a
> DMAR error with the code prior to this AGP rework and I can after the
> patch above.
>
> I'll keep digging and hope one of you guys has a good idea.
>
> Dave.

Just give current d-i-n a go and its worse, even with the resize patch applied.

Here some bits of the d-i-n dmesg, so I think I should concentrate on
the regression ;-)

Dave.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: d-i-n-msgs
Type: application/octet-stream
Size: 88315 bytes
Desc: not available
URL: <http://lists.freedesktop.org/archives/intel-gfx/attachments/20110111/5d4b5729/attachment.obj>