[Qemu-devel] [PATCH v2 0/9] Add memfd memory backend

["Marc-André Lureau" <marcandre.lureau@redhat.com>]

Add a new Linux-specific memory backend, similar to hostmem-file,
except that it doesn't need file path. It also try to enforce memory
sealing if available. It is thus slightly easier and secure, and is
compatible with transparent huge-pages since Linux 4.8.

v1->v2:
- make it linux-specific
- minor changes and commit message tweaks

Marc-André Lureau (9):
  exec: check kvm mmu notifiers earlier
  exec: split file_ram_alloc()
  exec: split qemu_ram_alloc_from_file()
  Add memory_region_init_ram_from_fd()
  ivshmem: use ram_from_fd()
  memory: remove memory_region_set_fd
  memfd: split qemu_memfd_alloc()
  Add memfd based hostmem
  tests: use memfd in vhost-user-test

 include/exec/memory.h    |  31 ++++++++-----
 include/exec/ram_addr.h  |   3 ++
 include/qemu/memfd.h     |   2 +
 backends/hostmem-memfd.c |  67 +++++++++++++++++++++++++++
 exec.c                   | 116 ++++++++++++++++++++++++++++-------------------
 hw/misc/ivshmem.c        |  14 +++---
 memory.c                 |  26 +++++++----
 tests/vhost-user-test.c  |  14 +++---
 util/memfd.c             |  42 ++++++++++-------
 backends/Makefile.objs   |   2 +
 qemu-options.hx          |  11 +++++
 11 files changed, 229 insertions(+), 99 deletions(-)
 create mode 100644 backends/hostmem-memfd.c

-- 
2.11.0