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By doing the registration immediately upon mapping the BAR instead of when the memory is inserted into the spdk_mem_map, we're able to register BARs that are not 2MB multiples in size and alignment. The SPDK API for registering a BAR already returns the physical/io address in the map call, and it can be used directly without a call to spdk_mem_register(). If the user does elect to later register the BAR using spdk_mem_register(), we attempt to insert the 2MB aligned segments we can into the spdk_mem_map. Users may still need to register memory for a few reasons, such as making spdk_vtophys() work, or for setting up the BAR as a target for RDMA. These cases still require 2MB aligned and sized segments. Change-Id: I395ae8803ec4bf22703f6f76db54200949e82532 Signed-off-by: Ben Walker <benjamin.walker@intel.com> Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/14017 Reviewed-by: Jim Harris <james.r.harris@intel.com> Reviewed-by: Konrad Sztyber <konrad.sztyber@intel.com> Reviewed-by: Shuhei Matsumoto <smatsumoto@nvidia.com> Tested-by: SPDK CI Jenkins <sys_sgci@intel.com> Community-CI: Mellanox Build Bot |
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