On Fri, Nov 15, 2013 at 08:57:26AM -0800, Matt Thomas wrote: > it's intentional. dmamap create/destroy can't be done from interrupt > because they allocate memory. besides mbufs, memory can't be > allocated. I don't agree with the softintr restriction (where else > can drivers allocate).
Bummer. It sure looks to me like bus_dmamap_destroy used to be callable from interrupt context. And the Open/FreeBSD code being identical leads me to believe they do support destroying in interrupt context. --chris
