[illumos-Developer] Webrev #534: DMA KVA cache attributes incorrect

[Michael Tsymbalyuk]

This webrev fixes the problem of improper handling of page table
attributes related to caching while allocating a DMA-compatible
memory via ddi_dma_mem_alloc(). The patch adds extra attribute check
to ddi_dma_mem_alloc(). New version uses #ifndef __sparc and
explicitly checks for caching flags passed to the function.

http://cr.illumos.org/view/1qszmsk0/illumos-534-webrev/

Sincerely,
Michael Tsymbalyuk