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[Qemu-devel] [PATCH v3 0/9] Add memfd memory backend
From: |
Marc-André Lureau |
Subject: |
[Qemu-devel] [PATCH v3 0/9] Add memfd memory backend |
Date: |
Fri, 2 Jun 2017 18:12:20 +0400 |
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.
The first 6 patches are mostly cleanups and could be considered
regardless of memfd hostmem acceptability.
v3:
- make vhost-user-test use memfd only if possible
- rebased
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 | 68 +++++++++++++++++----------
util/memfd.c | 42 ++++++++++-------
backends/Makefile.objs | 2 +
qemu-options.hx | 11 +++++
11 files changed, 266 insertions(+), 116 deletions(-)
create mode 100644 backends/hostmem-memfd.c
--
2.13.0.91.g00982b8dd
- [Qemu-devel] [PATCH v3 0/9] Add memfd memory backend,
Marc-André Lureau <=
- [Qemu-devel] [PATCH v3 1/9] exec: check kvm mmu notifiers earlier, Marc-André Lureau, 2017/06/02
- [Qemu-devel] [PATCH v3 2/9] exec: split file_ram_alloc(), Marc-André Lureau, 2017/06/02
- [Qemu-devel] [PATCH v3 3/9] exec: split qemu_ram_alloc_from_file(), Marc-André Lureau, 2017/06/02
- [Qemu-devel] [PATCH v3 4/9] Add memory_region_init_ram_from_fd(), Marc-André Lureau, 2017/06/02
- [Qemu-devel] [PATCH v3 5/9] ivshmem: use ram_from_fd(), Marc-André Lureau, 2017/06/02
- [Qemu-devel] [PATCH v3 6/9] memory: remove memory_region_set_fd, Marc-André Lureau, 2017/06/02
- [Qemu-devel] [PATCH v3 7/9] memfd: split qemu_memfd_alloc(), Marc-André Lureau, 2017/06/02
- [Qemu-devel] [PATCH v3 8/9] Add memfd based hostmem, Marc-André Lureau, 2017/06/02