On Tue, Dec 11, 2018 at 04:43:31PM +0000, Anatoly Burakov wrote: > When running in no-huge mode, we anonymously allocate our memory. > While this works for regular NICs and vdev's, it's not suitable > for memory sharing scenarios such as virtio with vhost_user > backend. > > To fix this, allocate no-huge memory using memfd, and register > it with memalloc just like any other memseg fd. This will enable > using rte_memseg_get_fd() API with --no-huge EAL flag. > > Signed-off-by: Anatoly Burakov <anatoly.bura...@intel.com> > --- > > Notes: > v2: > - Detect memfd support at compile time > - Change memfd-related log level to debug > > doc/guides/rel_notes/release_19_02.rst | 5 +++ > lib/librte_eal/linuxapp/eal/eal_memory.c | 54 +++++++++++++++++++++++- > 2 files changed, 57 insertions(+), 2 deletions(-) > > diff --git a/doc/guides/rel_notes/release_19_02.rst > b/doc/guides/rel_notes/release_19_02.rst > index 960098582..420d51b5b 100644 > --- a/doc/guides/rel_notes/release_19_02.rst > +++ b/doc/guides/rel_notes/release_19_02.rst > @@ -23,6 +23,11 @@ DPDK Release 19.02 > New Features > ------------ > > +* **Support for using VirtIO without hugepages** > + > + The --no-huge mode was augmented to use memfd-backed memory (on systems > that > + support memfd), to allow using VirtIO-based NICs without hugepages.
It would be better to say virtio-user here, because virtio NICs e.g. the one emulated by QEMU, could be something quite different. > + > .. This section should contain new features added in this release. > Sample format: > [...]
