vge problem

[Pyun YongHyeon]

On Mon, Dec 14, 2009 at 11:01:37AM +0900, Yoshiaki Kasahara wrote:
> On Thu, 10 Dec 2009 16:08:49 -0800,
> 	Pyun YongHyeon <pyunyh at gmail.com> said:
> 
> > While reading the code again I found some suspicious part which
> > could be related with your issue. The controller's CMZ field has
> > 3bits so it can handle 7 fragments of a TX frame. However,
> > controller wants to see number of fragments + 1 in this field which
> > means we can't use all 7 fragments in a TX descriptor. I changed
> > the patch to reduce number of TX fragments to 6. Does the following
> > patch make any difference for you?
> > http://people.freebsd.org/~yongari/vge/vge.busdma.diff3
> 
> I'm sorry I was away from the console during last weekend....
> 
> Today I booted new kernel with diff3 patch, and did a couple of tests
> (massive thumbnail loading and csup). All of them worked as expected
> and no Send-Q stack observed, so I believe the problem is fixed by
> this patch.
> 

FYI: Patch committed to HEAD.