Re: 3.15-rc7 i915 related dma-debug warning.

Hi Dave, You'll get piles of those, and you get to rewrite the (x86) dma implementation to fix them. There's two parts of the problem: - We hang onto dma mappings forever, and we don't enforce any ownership. Actually we can't since our userspace _wants_ to access some memory ranges while the gpu

3.15-rc7 i915 related dma-debug warning.

WARNING: CPU: 1 PID: 24000 at lib/dma-debug.c:593 debug_dma_assert_idle+0x1a4/0x220() i915 :00:02.0: DMA-API: cpu touching an active dma mapped cacheline [cln=0x04401d40] Modules linked in: ccm ip6t_rpfilter ip6t_REJECT xt_conntrack ebtable_nat ebtable_broute bridge stp llc ebtable_f