15/06/2020 02:43, Dmitry Kozlyuk: > Note for v9: > rte_eal_memory.h renamed, dependent patchsets have to be updated. > > This patchset implements basic MM with the following features: > > * Hugepages are dynamically allocated in user-mode. > * Only 2MB hugepages are supported. > * IOVA is always PA, obtained through kernel-mode driver. > * No 32-bit support (presumably not demanded). > * Ni multi-process support (it is forcefully disabled). > * No-huge mode for testing without IOVA is available. > > Testing revealed Windows Server 2019 does not allow allocating hugepage > memory at a reserved address, despite advertised API. So allocator has > to temporary free the region to be allocated. This creates in inherent > race condition. This issue is being discussed with Microsoft privately. > > New EAL public functions for memory mapping are introduced to mitigate > OS differences in DPDK libraries and applications: rte_mem_map, > rte_mem_unmap, rte_mem_lock, rte_mem_page_size. > > To support common MM routines, internal wrappers for low-level memory > reservation and file management are introduced. These changes affect > Linux and FreeBSD EAL. Shared code is placed unded /unix/ subdirectory > (suggested by Thomas). > > To avoid code duplication between Linux and Windows EAL, common code > for EALs supporting dynamic memory allocation is extracted > (discussed with Anatoly Burakov in v4 thread). This is a separate > patch to ease the review, but it can be merged with the previous one. > > EAL tracepoints save size_t values as long, which is invalid on Windows. > New size_t emitter for tracepoints is introduced (suggested by Jerin > Jacob to Fady Bader, see [1]). Also, to avoid workaround in every file > using the tracepoints, stubs are added to Windows EAL. > > Entire <sys/queue.h> is imported from FreeBSD, replacing existing > partial import. There is already a license exception for this file. > The file is imported as-is, so it causes a bunch of checkpatch warnings. > > [1]: http://mails.dpdk.org/archives/dev/2020-May/168076.html [...] > Dmitry Kozlyuk (12): > eal: replace rte_page_sizes with a set of constants > eal: introduce internal wrappers for file operations > eal: introduce memory management wrappers > eal/mem: extract common code for memseg list initialization > eal/mem: extract common code for dynamic memory allocation > trace: add size_t field emitter > eal/windows: add tracing support stubs > eal/windows: replace sys/queue.h with a complete one from FreeBSD > eal/windows: improve CPU and NUMA node detection > doc/windows: split build and run instructions > eal/windows: initialize hugepage info > eal/windows: implement basic memory management
Applied, thanks for the huge work!
