43e4631371
Enable callbacks on first device attach, disable callbacks on last device attach. PPC64 IOMMU does memseg walk, which will cause a deadlock on trying to do it inside a callback, so provide a local, thread-unsafe copy of memseg walk. PPC64 IOMMU also may remap the entire memory map for DMA while adding new elements to it, so change user map list lock to a recursive lock. That way, we can safely enter rte_vfio_dma_map(), lock the user map list, enter DMA mapping function and lock the list again (for reading previously existing maps). Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com> Tested-by: Santosh Shukla <santosh.shukla@caviumnetworks.com> Tested-by: Hemant Agrawal <hemant.agrawal@nxp.com> Tested-by: Gowrishankar Muthukrishnan <gowrishankar.m@linux.vnet.ibm.com>
DPDK is a set of libraries and drivers for fast packet processing. It supports many processor architectures and both FreeBSD and Linux. The DPDK uses the Open Source BSD-3-Clause license for the core libraries and drivers. The kernel components are GPL-2.0 licensed. Please check the doc directory for release notes, API documentation, and sample application information. For questions and usage discussions, subscribe to: users@dpdk.org Report bugs and issues to the development mailing list: dev@dpdk.org