This patchset adds additional testing to the series ("Allow user space to
restrict and augment MSR emulation") by Alexander Graf <graf@xxxxxxxxxx>,
and supliments the selftest in that series.
This patchset introduces exception handling into the kvm selftest framework
which is then used in the test to be able to handle #GPs that are injected
into the guest from userspace.
The test focuses on two main areas:
1) It tests the MSR filter API.
2) It tests MSR permission bitmaps.
v1 -> v2:
- Use exception_handlers instead of gs base to pass table to the guest.
- Move unexpected vector assert to processor.c.
v2 -> v3:
- Add stubs for assert_on_unhandled_exception() in aarch64 and s390x.
Aaron Lewis (4):
selftests: kvm: Fix the segment descriptor layout to match the actual
layout
selftests: kvm: Clear uc so UCALL_NONE is being properly reported
selftests: kvm: Add exception handling to selftests
selftests: kvm: Test MSR exiting to userspace
tools/testing/selftests/kvm/.gitignore | 1 +
tools/testing/selftests/kvm/Makefile | 20 +-
.../testing/selftests/kvm/include/kvm_util.h | 2 +
.../selftests/kvm/include/x86_64/processor.h | 26 +-
.../selftests/kvm/lib/aarch64/processor.c | 4 +
.../testing/selftests/kvm/lib/aarch64/ucall.c | 3 +
tools/testing/selftests/kvm/lib/kvm_util.c | 5 +
.../selftests/kvm/lib/kvm_util_internal.h | 2 +
.../selftests/kvm/lib/s390x/processor.c | 4 +
tools/testing/selftests/kvm/lib/s390x/ucall.c | 3 +
.../selftests/kvm/lib/x86_64/handlers.S | 81 +++
.../selftests/kvm/lib/x86_64/processor.c | 117 +++-
.../testing/selftests/kvm/lib/x86_64/ucall.c | 3 +
.../kvm/x86_64/userspace_msr_exit_test.c | 560 ++++++++++++++++++
14 files changed, 820 insertions(+), 11 deletions(-)
create mode 100644 tools/testing/selftests/kvm/lib/x86_64/handlers.S
create mode 100644 tools/testing/selftests/kvm/x86_64/userspace_msr_exit_test.c
--
2.28.0.1011.ga647a8990f-goog
