x86 uses the generic dma_get_required_mask() which assumes that DMA address == physical address. For Xen PV guests this is not the case and certain drivers will cause excessive use of the SWIOTLB.
Patch #1 is a straight forward refactoring of a common function. Patch #2 addes the required arch-specific implementation of dma_get_required_mask() to x86. David -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
