Re: [Qemu-devel] [PATCH v5 5/6] Add memfd based hostmem

2017-10-23 Thread Daniel P. Berrange
On Mon, Oct 23, 2017 at 07:41:57AM -0400, Marc-André Lureau wrote: > > > - Original Message - > > On Mon, Oct 23, 2017 at 10:59:09AM +0100, Marc-André Lureau wrote: > > > Add a new memory backend, similar to hostmem-file, except that it > > > doesn't need to create files. It also enforces

Re: [Qemu-devel] [PATCH v5 5/6] Add memfd based hostmem

2017-10-23 Thread Marc-André Lureau
- Original Message - > On Mon, Oct 23, 2017 at 10:59:09AM +0100, Marc-André Lureau wrote: > > Add a new memory backend, similar to hostmem-file, except that it > > doesn't need to create files. It also enforces memory sealing. > > > > This backend is mainly useful for sharing the memory

Re: [Qemu-devel] [PATCH v5 5/6] Add memfd based hostmem

2017-10-23 Thread Daniel P. Berrange
On Mon, Oct 23, 2017 at 10:59:09AM +0100, Marc-André Lureau wrote: > Add a new memory backend, similar to hostmem-file, except that it > doesn't need to create files. It also enforces memory sealing. > > This backend is mainly useful for sharing the memory with other > processes. > > Note that Li

[Qemu-devel] [PATCH v5 5/6] Add memfd based hostmem

2017-10-23 Thread Marc-André Lureau
Add a new memory backend, similar to hostmem-file, except that it doesn't need to create files. It also enforces memory sealing. This backend is mainly useful for sharing the memory with other processes. Note that Linux supports transparent huge-pages of shmem/memfd memory since 4.8. It is relati