[kvm-unit-tests,GIT,PULL] x86: Fixes, cleanups, and new tests

Pull-request

https://github.com/kvm-x86/kvm-unit-tests.git tags/kvm-x86-2024.06.14

Message

Sean Christopherson June 14, 2024, 11:46 p.m. UTC

Please pull a smattering of x86 changes, most of which have been sitting around
on-list for quite some time.  There are still quite a few KUT x86 series that
want attention, but they are all quite large and exceeded what little review
time I have for KUT :-/

Note, the posted interrupt test fails due to KVM bugs, patches posted:
https://lore.kernel.org/all/[e-mail]

The following changes since commit a68956b3fb6f5f308822b20ce0ff8e02db1f7375:

  gitlab-ci: Always save artifacts (2024-06-05 12:49:58 +0200)

are available in the Git repository at:

  https://github.com/kvm-x86/kvm-unit-tests.git tags/kvm-x86-2024.06.14

for you to fetch changes up to ee1d79c3f0f871bf78f20930cb1a2441f28ac027:

  nVMX: Verify KVM actually loads the value in HOST_PAT into the PAT MSR (2024-06-11 06:41:23 -0700)

----------------------------------------------------------------
x86 fixes, cleanups, and new testcases:

 - Add a testcase to verify that KVM doesn't inject a triple fault (or any
   other "error") if a nested VM is run with an EP4TA pointing MMIO.

 - Play nice with CR4.CET in test_vmxon_bad_cr()

 - Force emulation when testing MSR_IA32_FLUSH_CMD to workaround an issue where
   Skylake CPUs don't follow the architecturally defined behavior, and so that
   the test doesn't break if/when new bits are supported by future CPUs.

 - Rework the async #PF test to support IRQ-based page-ready notifications.

 - Fix a variety of issues related to adaptive PEBS.

 - Add several nested VMX tests for virtual interrupt delivery and posted
   interrupts.

 - Ensure PAT is loaded with the default value after the nVMX PAT tests
   (failure to do so was causing tests to fail due to all memory being UC).

 - Misc cleanups.

----------------------------------------------------------------
Alejandro Jimenez (1):
      x86: vmexit: Allow IPI test to be accelerated by SVM AVIC

Dan Wu (1):
      x86/asyncpf: Update async page fault test for IRQ-based "page ready"

Jack Wang (1):
      x86/msr: Fix typo in output SMR

Jim Mattson (1):
      nVMX: Enable x2APIC mode for virtual-interrupt delivery tests

Marc Orr (3):
      nVMX: test nested "virtual-interrupt delivery"
      nVMX: test nested EOI virtualization
      nVMX: add self-IPI tests to vmx_basic_vid_test

Mingwei Zhang (3):
      x86: Add FEP support on read/write register instructions
      x86: msr: testing MSR_IA32_FLUSH_CMD reserved bits only in KVM emulation
      x86/pmu: Clear mask in PMI handler to allow delivering subsequent PMIs

Oliver Upton (1):
      nVMX: add test for posted interrupts

Sean Christopherson (9):
      nVMX: Use helpers to check for WB memtype and 4-level EPT support
      nVMX: Use setup_dummy_ept() to configure EPT for test_ept_eptp() test
      nVMX: Add a testcase for running L2 with EP4TA that points at MMIO
      x86/pmu: Enable PEBS on fixed counters iff baseline PEBS is support
      x86/pmu: Iterate over adaptive PEBS flag combinations
      x86/pmu: Test adaptive PEBS without any adaptive counters
      x86/pmu: Add a PEBS test to verify the host LBRs aren't leaked to the guest
      nVMX: Ensure host's PAT is loaded at the end of all VMX tests
      nVMX: Verify KVM actually loads the value in HOST_PAT into the PAT MSR

Yang Weijiang (3):
      nVMX: Exclude CR4.CET from the test_vmxon_bad_cr()
      nVMX: Rename union vmx_basic and related global variable
      nVMX: Introduce new vmx_basic MSR feature bit for vmx tests

 lib/x86/apic.h       |   5 +
 lib/x86/asm/bitops.h |   8 +
 lib/x86/desc.h       |  30 +++-
 lib/x86/pmu.h        |   6 +-
 lib/x86/processor.h  |  24 ++-
 x86/asyncpf.c        | 154 ++++++++++------
 x86/msr.c            |  23 ++-
 x86/pmu.c            |   1 +
 x86/pmu_pebs.c       | 110 +++++++-----
 x86/unittests.cfg    |  19 +-
 x86/vmx.c            |  50 +++---
 x86/vmx.h            |   7 +-
 x86/vmx_tests.c      | 497 ++++++++++++++++++++++++++++++++++++++++++++++++---
 13 files changed, 755 insertions(+), 179 deletions(-)