[PATCH 0/2] KVM: x86: Fix dirty logging of emulated atomics

[Sean Christopherson <seanjc@google.com>]

Fix a bug in KVM's emulator where the target page of an atomic write isn't
marked dirty, and enhance the dirty_log_test selftest to serve as
a regression test by conditionally doing forced emulation of guest writes.

Note, the selftest depends on several patches that are sitting in
`kvm-x86 pmu`, so I'll likely take the selftest through that branch (eww).

Sean Christopherson (2):
  KVM: x86: Mark target gfn of emulated atomic instruction as dirty
  KVM: selftests: Test forced instruction emulation in dirty log test
    (x86 only)

 arch/x86/kvm/x86.c                           | 10 ++++++
 tools/testing/selftests/kvm/dirty_log_test.c | 36 ++++++++++++++++++--
 2 files changed, 43 insertions(+), 3 deletions(-)


base-commit: 7455665a3521aa7b56245c0a2810f748adc5fdd4
-- 
2.43.0.687.g38aa6559b0-goog