[kvm-unit-tests GIT PULL] x86: random smattering of changes

[Sean Christopherson <seanjc@google.com>]

Please pull a rather random set of changes that have been accumulating over
the last few months.

Note, the SKINIT nSVM intercept test fails on some Turin CPUs, but allegedly
only on pre-production hardware?  I assume/hope such hardware isn't commonly
available, and so didn't bother trying to handle it in upstream KUT.

The following changes since commit 9eb6c57313060d34f7e5b2ac6f90bb5873bbe2ff:

  Merge branch 'mbec' into HEAD (2026-05-12 13:03:25 +0200)

are available in the Git repository at:

  https://github.com/kvm-x86/kvm-unit-tests.git tags/kvm-x86-2026.05.27

for you to fetch changes up to c10d4616e2ad5d95553b2f0c389b4546dfacd76f:

  x86/vmx: Remove the superfluous vmx_cet config entry (2026-05-27 08:59:46 -0700)

----------------------------------------------------------------
KVM-Unit-Tests x86 changes:

 - Track SVM's EXIT_CODE as a 64-bit value, to verify KVM does the same.

 - Add nSVM tests for unsupported instruction intercepts.

 - Serialize the (v)CPU after WRMSR(TSCDEADLINE) to prepare for APIC timer
   virtualization.

 - Disable PKU in the vCPU model when running the nVMX access tests to make
   the runtime somewhat reasonable.

 - Extended the VMOVDQA test to cover VMOVNTDQA as well.

 - Add test coverage for ENTER + emulated MMIO.

 - Misc fixes, cleanups, and minor coverage enhancements.

----------------------------------------------------------------
Isaku Yamahata (2):
      x86: Replace NOP with CPUID after WRMSR(TSCDEADLINE) to serialize deadline timer
      x86: tscdeadline_latency: Remove unnecessary nop

Jim Mattson (1):
      x86: nVMX: Add retry loop to advanced RTM debugging subtest

Kevin Cheng (2):
      x86/svm: Add missing svm intercepts
      x86/svm: Add unsupported instruction intercept test

Maxim Levitsky (1):
      Skip PMU portion of vmware_backdoors test if PMU is not enabled.

Sean Christopherson (9):
      x86/cstart: Delete "local" version of save_id() to fix x2APIC SMP bug
      x86/debug: Fix macro definitions for DR7 local/global enable bits
      x86/svm: Track and handle exit code as an unsigned 64-bit value
      x86: Disable PKU in vCPU model for vmx_pf_{vpid/no_vpid/invvpid}_test
      x86/xsave: Extend VMOVDQA testing to also cover VMOVNTDQA
      x86/debug: Verify DR6 is always empty on an INT1/ICEBP #DB
      x86/apic: Verify LVT timer register mode reads back what was written
      x86/emulator: Add testcases for ENTER + emulated MMIO
      x86/vmx: Remove the superfluous vmx_cet config entry

 lib/x86/asm/debugreg.h    |   5 +-
 lib/x86/msr.h             |   1 +
 lib/x86/processor.h       |  11 ++
 x86/apic.c                |   8 +-
 x86/cstart.S              |   7 --
 x86/debug.c               |  34 +++---
 x86/emulator.c            |  66 ++++++-----
 x86/emulator64.c          |  64 ++++++++++
 x86/svm.c                 |  22 +++-
 x86/svm.h                 |  98 +++++++++++++---
 x86/svm_npt.c             |   4 +-
 x86/svm_tests.c           | 290 ++++++++++++++++++++++++++++++----------------
 x86/tscdeadline_latency.c |   1 -
 x86/unittests.cfg         |  31 ++---
 x86/vmexit.c              |   3 +-
 x86/vmware_backdoors.c    |  18 ++-
 x86/vmx_tests.c           |  76 +++++++++---
 x86/xsave.c               |  36 +++++-
 18 files changed, 559 insertions(+), 216 deletions(-)