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[Jacob Martin <2096932@xxxxxxxxxxxxxxxxxx>]

All vmx_posted_intr_test tests pass after applying the 7 patches here:
https://lore.kernel.org/kvm/20240906043413.1049633-1-seanjc@xxxxxxxxxx/.

This patchset has not been accepted into mainline yet, and the patchset
notes that the original bug is unlikely to cause functional issues, but
may have some performance consequences due to unnecessary VM-Exits.
Because of the complexity of the changes, it is also noted that there is
a significant opportunity for them to introduce a functional regression,
hence for v2 the author un-cc’d upstream stable. Once these are accepted
into mainline, we can evaluate whether or not these patches should be
cherry picked into Ubuntu kernels.

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https://bugs.launchpad.net/bugs/2096932

Title:
  vmx_posted_intr_test of ubuntu_kvm_unit_tests fails with Expected
  VMX_VMCALL, got VMX_EXTINT on NVIDIA H100

Status in ubuntu-kernel-tests:
  New

Bug description:
  The following failure was observed on DGX H100, running Noble with the
  HWE 6.11.0-1003-nvidia kernel.

  01/25 09:09:43 DEBUG|(unknown f:0000| [stdout] filter = vmx_posted_interrupts_test, test = vmx_posted_interrupts_test
  01/25 09:09:43 DEBUG|(unknown f:0000| [stdout] 
  01/25 09:09:43 DEBUG|(unknown f:0000| [stdout] Test suite: vmx_posted_interrupts_test
  01/25 09:09:43 DEBUG|(unknown f:0000| [stdout] PASS: Set ISR for vectors 33-255.
  01/25 09:09:43 DEBUG|(unknown f:0000| [stdout] FAIL: x86/vmx_tests.c:2164: Assertion failed: (expected) == (actual)
  01/25 09:09:43 DEBUG|(unknown f:0000| [stdout] 	LHS: 0x0000000000000012 - 0000'0000'0000'0000'0000'0000'0000'0000'0000'0000'0000'0000'0000'0000'0001'0010 - 18
  01/25 09:09:43 DEBUG|(unknown f:0000| [stdout] 	RHS: 0x0000000000000001 - 0000'0000'0000'0000'0000'0000'0000'0000'0000'0000'0000'0000'0000'0000'0000'0001 - 1
  01/25 09:09:43 DEBUG|(unknown f:0000| [stdout] Expected VMX_VMCALL, got VMX_EXTINT.
  01/25 09:09:43 DEBUG|(unknown f:0000| [stdout] 	STACK: 406fac 40730e 4172e0 4177e5 4020a3 403fc6 4001bd
  01/25 09:09:43 DEBUG|(unknown f:0000| [stdout] filter = vmx_posted_interrupts_test, test = vmx_apic_passthrough_test

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