[PATCH 0/6] Support TDX guests on Hyper-V

[Dexuan Cui <decui@microsoft.com>]

Intel folks added the generic code to support a TDX guest in April, 2022.

This patchset adds the Hyper-V specific code so that a TDX guest can run
on Hyper-V. Please review. Thanks!

Patch 1, 2 and 3 modify the generic TDX code in arch/x86/coco/tdx/.
I think they should go through the x86 tip.git tree.

Patch 4, 5, and 6 are for Hyper-V drivers and I think they should go
through the hyperv tree. Once Michael Kelley's patchset is merged
(see https://lwn.net/ml/linux-kernel/1668624097-14884-1-git-send-email-mikelley%40microsoft.com/)
I'll need to rebase the 3 patches.

Patch 5 depends on __tdx_ms_hv_hypercall(), which is added by patch 1.

Thanks,
Dexuan

Dexuan Cui (6):
  x86/tdx: Support hypercalls for TDX guests on Hyper-V
  x86/tdx: Retry TDVMCALL_MAP_GPA() when needed
  x86/tdx: Support vmalloc() for tdx_enc_status_changed()
  x86/hyperv: Add hv_isolation_type_tdx() to detect TDX guests
  x86/hyperv: Support hypercalls for TDX guests
  Drivers: hv: vmbus: Support TDX guests

 MAINTAINERS                          |   1 +
 arch/x86/coco/tdx/tdcall.S           |  87 +++++++++++++++++++++
 arch/x86/coco/tdx/tdx.c              | 110 +++++++++++++++++++++++++--
 arch/x86/hyperv/hv_init.c            |  27 ++++++-
 arch/x86/hyperv/ivm.c                |   7 ++
 arch/x86/include/asm/hyperv-tlfs.h   |   3 +-
 arch/x86/include/asm/mshyperv.h      |  29 ++++++-
 arch/x86/kernel/cpu/mshyperv.c       |  30 +++++++-
 arch/x86/mm/pat/set_memory.c         |   2 +-
 drivers/hv/connection.c              |   4 +-
 drivers/hv/hv.c                      |  25 ++++++
 drivers/hv/hv_common.c               |   6 ++
 drivers/hv/ring_buffer.c             |   2 +-
 include/asm-generic/ms_hyperv_info.h |  29 +++++++
 include/asm-generic/mshyperv.h       |  24 +-----
 15 files changed, 345 insertions(+), 41 deletions(-)
 create mode 100644 include/asm-generic/ms_hyperv_info.h

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2.25.1