Correct the writing to RING_RPTR_ADDR in the non agp case, should be a hardware virtual address offset, not a physical one. From upstream.
Correct the writing to RING_RPTR_ADDR in the non agp case, should be a
hardware virtual address offset, not a physical one. From upstream.

orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars