[PATCH 2/9] Move dma_ops from archdata into struct device

Several RDMA drivers, e.g. drivers/infiniband/hw/qib, use the CPU to transfer data between memory and PCIe adapter. Because of performance reasons it is important that the CPU cache is not flushed when such drivers transfer data. Make this possible by allowing these drivers to override the dma_map_

[PATCH 1/9] treewide: Constify most dma_map_ops structures

Most dma_map_ops structures are never modified. Constify these structures such that these can be write-protected. This patch has been generated as follows: git grep -l 'struct dma_map_ops' | xargs -d\\n sed -i \ -e 's/struct dma_map_ops/const struct dma_map_ops/g' \ -e 's/const struct dm

Re: [PATCH 2/9] Move dma_ops from archdata into struct device

On Tue, Jan 10, 2017 at 04:56:41PM -0800, Bart Van Assche wrote: > Several RDMA drivers, e.g. drivers/infiniband/hw/qib, use the CPU to > transfer data between memory and PCIe adapter. Because of performance > reasons it is important that the CPU cache is not flushed when such > drivers transfer da

Re: [PATCH 2/9] Move dma_ops from archdata into struct device

On Tue, Jan 10, 2017 at 04:56:41PM -0800, Bart Van Assche wrote: > Several RDMA drivers, e.g. drivers/infiniband/hw/qib, use the CPU to > transfer data between memory and PCIe adapter. Because of performance > reasons it is important that the CPU cache is not flushed when such > drivers transfer da