Re: Xorg causes panics with "multiple" drivers (Was: panic: resource_list_alloc: resource entry is busy)

On Monday, September 15, 2014 11:25:47 AM John Baldwin wrote:
> On Saturday, September 13, 2014 10:57:53 AM dt71_at_gmx.com wrote:
> > John Baldwin wrote on 09/12/2014 23:06:
> > > X loaded i915kms automatically and
> > > i915 and i915kms do not get along.  i915 had already allocated the IRQ
> > > when i915kms tried to alloc the same IRQ causing the issue.
> > 
> > Who is to blame? The user who tried to manually load an unsupported
> > combination of modules, or the system, which should have handled things
> > gracefully (whether by automatically unloading the first driver, or
> > producing a soft-error upon loading the 2nd driver)?
> > 
> > On a side-note, I also had a "resource_list_alloc: resource entry is busy"
> > panic right after switching from the 10.0-supported Xorg to the "new"
> > Xorg;
> > I exited Xorg, enabled "FreeBSD_new_Xorg", ran "pkg upgrade", then ran
> > "startx", and got the panic. Surely this wasn't my fault!
> 
> I can turn the panic into a resource allocation failure, but specifically
> with KMS I am unsure if it will actually be better. 

FYI, I wrote a test for the patch I sent to make this not panic and verified 
it worked ok and committed it.

-- 
John Baldwin