19 Sep
2018
19 Sep
'18
2:44 p.m.
Hi On Wed, Sep 19, 2018 at 5:31 PM Michal Privoznik <mprivozn@redhat.com> wrote:
On 09/19/2018 01:43 PM, Jiri Denemark wrote: BTW: what features does this new memfd backend provides that can't be achieved via traditional -file or -ram backends?
2 things stand out: - no need for files & mountpoint - sealing, preventing grow/srink (qemu doesn't seal write) memfd is thus a better way to share anonymous memory between processes on linux (when you don't have other weird constrains). Read also the initial post: https://dvdhrm.wordpress.com/tag/memfd/. Since then memfd has grown a few more features, such as hugetlb support.