[for-next,v3,0/9] Port Xen to Hyper-V

Message

Wei Liu Oct. 21, 2019, 3:57 p.m. UTC

Hi all

This is version 3 of the patch series.

This is the very first stage for porting Xen to run on Hyper-V with all the
goodies Hyper-V has to offer.  With this series, Xen can successfully detect
Hyper-V and prints out a message.  I would like to first get the code structure
and kconfig options agreed upon.

There are two major areas to be worked on:
  * Make Dom0 able to use Hyper-V's synthetic devices.
  * Make Xen use of the synthetic timer, reference TSC and enlightenment VMCS
    and other interfaces.

They aren't trivial, and time can be scarce on my side, so I intend to post
patches piecemeal when they are ready.

Questions and comments are welcome.

Thanks,
Wei.

---
Changes in v3: See invididual patches

Changes in v2:
1. Introduce and use a hypervisor framework
2. Keep memmap infra under Xen for now

Cc: Jan Beulich <[e-mail]>
Cc: Andrew Cooper <[e-mail]>
Cc: Wei Liu <[e-mail]>
Cc: Roger Pau Monné <[e-mail]>

Wei Liu (9):
  x86: introduce CONFIG_GUEST and move code
  x86: include asm_defns.h directly in hypercall.h
  x86: drop hypervisor_cpuid_base
  x86: include xen/lib.h in guest/hypercall.h
  x86: introduce hypervisor framework
  x86: rename hypervisor_{alloc,free}_unused_page
  x86: switch xen implementation to use hypervisor framework
  x86: be more verbose when running on a hypervisor
  x86: introduce CONFIG_HYPERV and detection code

 xen/arch/x86/Kconfig                          | 13 +++
 xen/arch/x86/Makefile                         |  2 +-
 xen/arch/x86/guest/Makefile                   |  6 +-
 xen/arch/x86/guest/hyperv/Makefile            |  1 +
 xen/arch/x86/guest/hyperv/hyperv.c            | 54 +++++++++++
 xen/arch/x86/guest/hypervisor.c               | 89 +++++++++++++++++++
 xen/arch/x86/guest/xen/Makefile               |  4 +
 xen/arch/x86/guest/{ => xen}/hypercall_page.S |  0
 xen/arch/x86/guest/{ => xen}/pvh-boot.c       |  2 +-
 xen/arch/x86/guest/{ => xen}/xen.c            | 39 ++++----
 xen/arch/x86/pv/shim.c                        |  6 +-
 xen/arch/x86/setup.c                          |  6 +-
 xen/include/asm-x86/guest.h                   |  2 +
 xen/include/asm-x86/guest/hypercall.h         |  4 +
 xen/include/asm-x86/guest/hyperv.h            | 45 ++++++++++
 xen/include/asm-x86/guest/hypervisor.h        | 64 +++++++++++++
 xen/include/asm-x86/guest/xen.h               | 24 ++---
 17 files changed, 314 insertions(+), 47 deletions(-)
 create mode 100644 xen/arch/x86/guest/hyperv/Makefile
 create mode 100644 xen/arch/x86/guest/hyperv/hyperv.c
 create mode 100644 xen/arch/x86/guest/hypervisor.c
 create mode 100644 xen/arch/x86/guest/xen/Makefile
 rename xen/arch/x86/guest/{ => xen}/hypercall_page.S (100%)
 rename xen/arch/x86/guest/{ => xen}/pvh-boot.c (99%)
 rename xen/arch/x86/guest/{ => xen}/xen.c (93%)
 create mode 100644 xen/include/asm-x86/guest/hyperv.h
 create mode 100644 xen/include/asm-x86/guest/hypervisor.h