This is a followup to http://lkml.org/lkml/2007/8/24/280
Despite Grant's desire for a more elegant solution, there's not much new here. I moved the API change from pci.h to dma-mapping.h and removed the pci_ prefix from the name. Problem Description ------------------- On Altix, DMA may be reordered within the NUMA interconnect. This can be a problem with Infiniband, where DMA to Completion Queues allocated in user-space can race with data DMA. This patchset allows a driver to associate a user-space memory region with a "dmaflush" attribute, so that writes to the memory region flush in-flight DMA, preventing the CQ/data race. There are four patches in this set: [1/4] dma: add dma_flags_set_dmaflush() to dma interface [2/4] dma: redefine dma_flags_set_dmaflush() for sn-ia64 [3/4] dma: document dma_flags_set_dmaflush() [4/4] mthca: allow setting "dmaflush" attribute on user-allocated memory - 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/
