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H A D | busdma_machdep.c | diff 203080 Wed Jan 27 15:28:38 MST 2010 kan Do not leave dirty cache lines behind if bus_dmamap_sync was called to invalidate memory chunk that starts or ends in the middle of cache line. This was responsible for one half of the problem preventing umass to work reliably on some MIPS32 platforms. USBng needs to stop sharing cache lines between DMA-able memory and other structures to cure the other half. Discussed with: imp, gonzo |
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