Messages in this thread | | | Date | Fri, 18 May 2007 13:34:56 +0100 | From | Alan Cox <> | Subject | Re: [PATCH] drivers/ata: Add the SW NCQ support to sata_nv for MCP51/MCP55/MCP61 |
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> That shouldn't be a problem, libata default DMA mask is 32 bits (which > isn't overridden with this controller) and so the block layer will > bounce any data being read/written above that point with IOMMU or > swiotlb. The comment is a bit unnecessarily scary.
Adding a BUG_ON for this would be wise. Its trivial to check and a BUG rather than corruption if this assumption ever changes would be far preferable - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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