Re: [PATCH v4 0/4] Implements the NetBSD Virtual Machine Monitor accelerator

[Kamil Rytarowski]

Ping?

On 06.02.2020 22:32, 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:
> v3 -> v4:
>  - Correct build warning by adding a missing include
>  - Do not set R8-R16 registers unless TARGET_X86_64
> v2 -> v3:
>  - Register nvmm in targetos NetBSD check
>  - Stop including hw/boards.h
>  - Rephrase old code comments (remove XXX)
> 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                 |   37 ++
>  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    | 1226 +++++++++++++++++++++++++++++++++++++
>  10 files changed, 1424 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
>
> --
> 2.25.0
>
>