The userspace API is the same as in v2, consolidating everything into a
single KVM_EXIT_TDX where userspace is free to ignore unknown TDVMCALLs.

Together with this I have written an extra small series that adds supported
TDVMCALLs in the KVM_TDX_CAPABILITIES output, and also adds
SetupEventNotifyInterrupt support.  I'd rather include it in 6.16 but
also it's better to do that as soon as the spec is finalized rather than
earlier.

Since there's nothing really interesting in there, I'll hold on it for
a couple weeks hoping for more movement on the spec side.

Paolo


Binbin Wu (3):
  KVM: TDX: Add new TDVMCALL status code for unsupported subfuncs
  KVM: TDX: Handle TDG.VP.VMCALL<GetQuote>
  KVM: TDX: Exit to userspace for GetTdVmCallInfo

 Documentation/virt/kvm/api.rst    | 59 +++++++++++++++++++++-
 arch/x86/include/asm/shared/tdx.h |  1 +
 arch/x86/kvm/vmx/tdx.c            | 83 ++++++++++++++++++++++++++++---
 include/uapi/linux/kvm.h          | 22 ++++++++
 4 files changed, 157 insertions(+), 8 deletions(-)

-- 
2.43.5

On Fri, 2025-06-20 at 14:33 -0400, Paolo Bonzini wrote:
> hoping for more movement on the spec side.

The public TDX docs website has been updated with the draft specs:
https://www.intel.com/content/www/us/en/developer/tools/trust-domain-extensions/documentation.html

See "Intel TDX Guest Host Communication Interface Specification" section.