This is a rebase of the old patchset from Roman for HyperV VMBus
implementation.

How to use:
-device vmbus-bridge

Later on new paravirtualized devices can be implemented on top of it
(Network/SCSI/etc.)

VMBus is a collection of technologies.  At its lowest layer, it's a message
passing and signaling mechanism, allowing efficient passing of messages to and
from guest VMs.  A layer higher, it's a mechanism for defining channels of
communication, where each channel is tagged with a type (which implies a
protocol) and a instance ID.  A layer higher than that, it's a bus driver,
serving as the basis of device enumeration within a VM, where a channel can
optionally be exposed as a paravirtual device.  When a server-side (paravirtual
back-end) component wishes to offer a channel to a guest VM, it does so by
specifying a channel type, a mode, and an instance ID.  VMBus then exposes this
in the guest.

More information about VMBus can be found in the file
vmbuskernelmodeclientlibapi.h in Microsoft's WDK.

Jon Doron (7):
  hyperv: expose API to determine if synic is enabled
  hyperv: SControl is optional to enable SynIc
  vmbus: add vmbus protocol definitions
  vmbus: vmbus implementation
  i386:pc: whitelist dynamic vmbus-bridge
  i386: Hyper-V VMBus ACPI DSDT entry
  vmbus: add infrastructure to save/load vmbus requests

 Makefile.objs                    |    1 +
 hw/hyperv/Kconfig                |    5 +
 hw/hyperv/Makefile.objs          |    1 +
 hw/hyperv/hyperv.c               |  250 ++-
 hw/hyperv/trace-events           |   18 +
 hw/hyperv/vmbus.c                | 2778 ++++++++++++++++++++++++++++++
 hw/i386/acpi-build.c             |   43 +
 hw/i386/pc_piix.c                |    2 +
 hw/i386/pc_q35.c                 |    2 +
 include/hw/hyperv/hyperv.h       |    3 +
 include/hw/hyperv/vmbus-bridge.h |   35 +
 include/hw/hyperv/vmbus-proto.h  |  222 +++
 include/hw/hyperv/vmbus.h        |  230 +++
 target/i386/hyperv.c             |    2 +
 14 files changed, 3510 insertions(+), 82 deletions(-)
 create mode 100644 hw/hyperv/trace-events
 create mode 100644 hw/hyperv/vmbus.c
 create mode 100644 include/hw/hyperv/vmbus-bridge.h
 create mode 100644 include/hw/hyperv/vmbus-proto.h
 create mode 100644 include/hw/hyperv/vmbus.h

-- 
2.24.1

Patchew URL: https://patchew.org/QEMU/20200404082900.33711-1-arilou@gmail.com/



Hi,

This series failed the asan build test. Please find the testing commands and
their output below. If you have Docker installed, you can probably reproduce it
locally.

=== TEST SCRIPT BEGIN ===
#!/bin/bash
export ARCH=x86_64
make docker-image-fedora V=1 NETWORK=1
time make docker-test-debug@fedora TARGET_LIST=x86_64-softmmu J=14 NETWORK=1
=== TEST SCRIPT END ===

  CC      x86_64-softmmu/hw/i386/../xenpv/xen_machine_pv.o
  CC      x86_64-softmmu/hw/i386/kvm/clock.o
  CC      x86_64-softmmu/hw/i386/kvm/apic.o
/tmp/qemu-test/src/hw/hyperv/vmbus.c:1758:57: error: use of logical '&&' with constant operand [-Werror,-Wconstant-logical-operand]
                                 msg->version_requested && 0xffff,
                                                        ^  ~~~~~~
/tmp/qemu-test/src/hw/hyperv/vmbus.c:1758:57: note: use '&' for a bitwise operation
---
                                                       ~^~~~~~~~~
1 error generated.
  CC      x86_64-softmmu/hw/i386/kvm/ioapic.o
make[1]: *** [/tmp/qemu-test/src/rules.mak:69: hw/hyperv/vmbus.o] Error 1
make[1]: *** Waiting for unfinished jobs....
make: *** [Makefile:527: x86_64-softmmu/all] Error 2
Traceback (most recent call last):
  File "./tests/docker/docker.py", line 664, in <module>
    sys.exit(main())
---
    raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command '['sudo', '-n', 'docker', 'run', '--label', 'com.qemu.instance.uuid=08a51f9a8fa54e4f997e80e93986c8e8', '-u', '1003', '--security-opt', 'seccomp=unconfined', '--rm', '-e', 'TARGET_LIST=x86_64-softmmu', '-e', 'EXTRA_CONFIGURE_OPTS=', '-e', 'V=', '-e', 'J=14', '-e', 'DEBUG=', '-e', 'SHOW_ENV=', '-e', 'CCACHE_DIR=/var/tmp/ccache', '-v', '/home/patchew2/.cache/qemu-docker-ccache:/var/tmp/ccache:z', '-v', '/var/tmp/patchew-tester-tmp-hl8e3_pu/src/docker-src.2020-04-04-04.39.31.17034:/var/tmp/qemu:z,ro', 'qemu:fedora', '/var/tmp/qemu/run', 'test-debug']' returned non-zero exit status 2.
filter=--filter=label=com.qemu.instance.uuid=08a51f9a8fa54e4f997e80e93986c8e8
make[1]: *** [docker-run] Error 1
make[1]: Leaving directory `/var/tmp/patchew-tester-tmp-hl8e3_pu/src'
make: *** [docker-run-test-debug@fedora] Error 2

real    4m12.960s
user    0m8.131s


The full log is available at
http://patchew.org/logs/20200404082900.33711-1-arilou@gmail.com/testing.asan/?type=message.
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