[dpdk-dev] [PATCH v3 0/5] Allow using virtio-user without hugepages

Anatoly Burakov anatoly.burakov at intel.com
Thu Dec 13 12:43:14 CET 2018


It is already possible to use both DPDK in general and
virtio-user specifically, without hugetlbfs mounts, but
currently virtio-user 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-user to work not
only without hugetlbfs (which was already possible), but
without hugepages altogether, which could be useful in
Cloud Native scenarios.

v3:
- Clarify doc changes

v2:
- 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(-)

-- 
2.17.1


More information about the dev mailing list