Re: [ARM32] panic when sshd responding

[Jason Thorpe <thorpej%shagadelic.org@localhost>]

On Jun 19, 2008, at 10:08 AM, Matt Thomas wrote:

> Upon further thought, I think the socket loan code should use
> pmap_enter/pmap_remove instead pmap_kenter_pa/pmap_kremove.

Probably a fine thing to do.  What other uses of kenter are lurking  
that require being able to do the work in interrupt context?

> > However, the current code has a risk that the double pmap_kenter_pa  
> > sets
> > the KENTER flag on the page, and pmap_kremove clears it, as there's  
> > no
> > reference counting.
>
> And that would be bad if another pmap_kenter_pa happened to be done
> with VM_PROT_WRITE.
>
> > Commenting out the KASSERT should make it work, but you might also  
> > have to
> > remove the KASSERT about KENTER as well in pmap_kremove.

-- thorpej