Re: [PATCH v2 0/4] Implements the NetBSD Virtual Machine Monitor accelerator

[Kamil Rytarowski]

Ping?

We plan to release NetBSD 9.0 in two weeks and we would love to have
this patchset merged.

"A second (and hopefulle final) release candidate for the upcoming
NetBSD 9.0 release is now available.
Please help testing it!

Tentative final 9.0 release date: February 14, 2020"

http://netbsd.org/

On 28.01.2020 15:09, Kamil Rytarowski wrote:
> 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.
>
> Refrences:
> https://m00nbsd.net/4e0798b7f2620c965d0dd9d6a7a2f296.html
>
> Test plan:
>
> 1. Download a NetBSD 9.0 pre-release snapshot:
> http://nycdn.netbsd.org/pub/NetBSD-daily/netbsd-9/latest/images/NetBSD-9.0_RC1-amd64.iso
>
> 2. Install it natively on a not too old x86_64 hardware (Intel or AMD).
>
> There is no support for nested virtualization in NVMM.
>
> 3. Setup the system.
>
>  export PKG_PATH=http://www.ki.nu/pkgsrc/packages/current/NetBSD-9.0_RC1/All
>  pkg_add git gmake python37 glib2 bison pkgconf pixman
>
> Install mozilla-rootcerts and follow post-install instructions.
>
>  pkg_add mozilla-rootcerts
>
> More information: https://wiki.qemu.org/Hosts/BSD#NetBSD
>
> 4. Build qemu
>
>  mkdir build
>  cd build
>  ../configure --python=python3.7
>  gmake
>  gmake check
>
> 5. Test
>
>  qemu -accel nvmm ...
>
>
> History:
> v1 -> v2:
>  - Included the testing plan as requested by Philippe Mathieu-Daude
>  - Formatting nit fix in qemu-options.hx
>  - Document NVMM in the accel section of qemu-options.hx
>
> 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           |   16 +-
>  target/i386/Makefile.objs |    1 +
>  target/i386/helper.c      |    2 +-
>  target/i386/nvmm-all.c    | 1222 +++++++++++++++++++++++++++++++++++++
>  10 files changed, 1419 insertions(+), 9 deletions(-)
>  create mode 100644 accel/stubs/nvmm-stub.c
>  create mode 100644 include/sysemu/nvmm.h
>  create mode 100644 target/i386/nvmm-all.c
>
> --
> 2.24.1
>