[PATCH v6 0/6] Support TDX guests on Hyper-V

[Dexuan Cui]

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

The v6 patchset is based on today's mainline (a1fd058b07d5).

The v6 patchset addressed Michael's comments on patch 5:
  Removed 2 unnecessary lines of messages from the commit log.
  Fixed the error handling path for hv_synic_alloc()/free().
  Printed the 'ret' in hv_synic_alloc()/free().

@Michael Kelley: Can you please review patch 5?

@x86 maintainers:
  If the patches look good to you, can you please take patch 1 and 2
into the tip tree?
  
@Wei Liu: I think patch 3, 4, 5, 6 should go through the Hyper-V tree
since they change the Hyper-V code.

If you want to view the patches on github, it is here:
https://github.com/dcui/tdx/commits/decui/mainline/v6

FYI, v1-v5 are here:
https://lwn.net/ml/linux-kernel/20221121195151.21812-1-decui@xxxxxxxxxxxxx/
https://lwn.net/ml/linux-kernel/20221207003325.21503-7-decui@xxxxxxxxxxxxx/
https://lwn.net/ml/linux-kernel/20230206192419.24525-1-decui@xxxxxxxxxxxxx/
https://lwn.net/ml/linux-kernel/20230408204759.14902-6-decui@xxxxxxxxxxxxx/
https://lwn.net/ml/linux-kernel/20230422021735.27698-1-decui@xxxxxxxxxxxxx/

Thanks,
Dexuan

Dexuan Cui (6):
  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
  x86/hyperv: Fix serial console interrupts for TDX guests

 arch/x86/coco/tdx/tdx.c            | 122 ++++++++++++++++++++++-------
 arch/x86/hyperv/hv_apic.c          |   6 +-
 arch/x86/hyperv/hv_init.c          |  27 ++++++-
 arch/x86/hyperv/ivm.c              |  20 +++++
 arch/x86/include/asm/hyperv-tlfs.h |   3 +-
 arch/x86/include/asm/mshyperv.h    |  20 +++++
 arch/x86/kernel/cpu/mshyperv.c     |  43 ++++++++++
 drivers/hv/hv.c                    |  65 ++++++++++++++-
 drivers/hv/hv_common.c             |  30 +++++++
 include/asm-generic/mshyperv.h     |   1 +
 10 files changed, 300 insertions(+), 37 deletions(-)

-- 
2.25.1