[dpdk-dev] [PATCH v2 0/5] Allow using virtio without hugepages

Anatoly Burakov anatoly.burakov at intel.com
Tue Dec 11 17:43:27 CET 2018

It is already possible to use both DPDK in general and
virtio specifically, without hugetlbfs mounts, but
currently virtio cannot be used without hugepage memory
(i.e. with a --no-huge EAL switch) due to the fact that
it needs to share memory with the backend.

This patchset uses memfd to create actual files backing
anonymous memory. This enabled virtio to work not only
without hugetlbfs, but without hugepages altogether,
which could be useful in Cloud Native scenarios.

- Fixed segment fd list not being initialized
- Added some segment fd API fixes
- Added unit test for segment fd API

Anatoly Burakov (5):
  mem: fix error code for segment fd API for external segs
  memalloc: check for memfd support in segment fd API
  memalloc: allow setting up segment list fd's
  mem: use memfd for no-huge mode
  test: add segment fd API test

 doc/guides/rel_notes/release_19_02.rst     | 13 +++++
 lib/librte_eal/bsdapp/eal/eal_memalloc.c   |  6 ++
 lib/librte_eal/common/eal_common_memory.c  | 12 ++++
 lib/librte_eal/common/eal_memalloc.h       |  4 ++
 lib/librte_eal/linuxapp/eal/eal_memalloc.c | 66 +++++++++++++++++++---
 lib/librte_eal/linuxapp/eal/eal_memory.c   | 54 +++++++++++++++++-
 test/test/test_memory.c                    | 43 ++++++++++++++
 7 files changed, 188 insertions(+), 10 deletions(-)


More information about the dev mailing list