[PATCH 0/4] Implements the NetBSD Virtual Machine Monitor accelerator

[Kamil Rytarowski]

Hello QEMU Community!

Over the past year the NetBSD team has been working hard on a new user-mode API
for our hypervisor that will be released as part of the upcoming NetBSD 9.0.
This new API adds user-mode capabilities to create and manage virtual machines,
configure memory mappings for guest machines, and create and control execution
of virtual processors.

With this new API we are now able to bring our hypervisor to the QEMU
community! The following patches implement the NetBSD Virtual Machine Monitor
accelerator (NVMM) for QEMU on NetBSD 9.0 and newer hosts.

When compiling QEMU for x86_64 passing the --enable-nvmm flag will compile the
accelerator for use. At runtime using the '-accel nvmm' should see a
significant performance improvement over emulation, much like when using 'hax'
on NetBSD.

The documentation for this new API is visible at https://man.netbsd.org under
the libnvmm(3) and nvmm(4) pages.

NVMM was designed and implemented by Maxime Villard.

Thank you for your feedback.

Maxime Villard (4):
  Add the NVMM vcpu API
  Add the NetBSD Virtual Machine Monitor accelerator.
  Introduce the NVMM impl
  Add the NVMM acceleration enlightenments

 accel/stubs/Makefile.objs |    1 +
 accel/stubs/nvmm-stub.c   |   43 ++
 configure                 |   36 ++
 cpus.c                    |   58 ++
 include/sysemu/hw_accel.h |   14 +
 include/sysemu/nvmm.h     |   35 ++
 qemu-options.hx           |    4 +-
 target/i386/Makefile.objs |    1 +
 target/i386/helper.c      |    2 +-
 target/i386/nvmm-all.c    | 1222 +++++++++++++++++++++++++++++++++++++
 10 files changed, 1413 insertions(+), 3 deletions(-)
 create mode 100644 accel/stubs/nvmm-stub.c
 create mode 100644 include/sysemu/nvmm.h
 create mode 100644 target/i386/nvmm-all.c

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2.24.0