[PATCH for_v2? v2 00/14] selftests/x86/sgx: Improve tests

[Sean Christopherson <sean.j.christopherson@intel.com>]

The bulk of this series is comprised of the selftest portion of the vDSO
cleanup[*].  The big difference from the full vDSO series is to reuse as
much of the existing selftest code as possible.  There is still a bit of
homebrew code in defining the low level assertion macro, but much less so
than in the previous from-scratch version.

Cc'd Andy, who also happens to be a reviewer for the harness code, on the
off chance he has bandwidth to weigh in.

Tagged for_v2? to make it clear that this doesn't need to be rushed into
v23.

Passing case:

  TAP version 13
  1..4
  ok 1 test_sgx_basic: Passed
  ok 2 test_sgx_vdso: Passed
  ok 3 test_sgx_vdso_exit_handler: Passed
  ok 4 test_sgx_vdso_exception_handler: Passed
  # Pass 4 Fail 0 Xfail 0 Xpass 0 Skip 0 Error 0

Failing case:

  TAP version 13
  1..4
  not ok 1 Expected 'result (1234605616436508552) != MAGIC (1234605616436508552)' at main.c:324
  ok 2 test_sgx_vdso: Passed
  ok 3 test_sgx_vdso_exit_handler: Passed
  ok 4 test_sgx_vdso_exception_handler: Passed
  # Pass 3 Fail 1 Xfail 0 Xpass 0 Skip 0 Error 0


[*] https://patchwork.kernel.org/cover/11178771/

Sean Christopherson (14):
  selftests/x86/sgx: Fix a benign linker warning
  selftests/x86/sgx: Use getauxval() to retrieve the vDSO base address
  selftests/x86/sgx: Sanitize the types for sgx_vdso_call()'s input
    params
  selftests/x86/sgx: Mark helper functions as static
  selftests/x86/sgx: Move vDSO setup to a helper function
  selftests/x86/sgx: Move individual tests into helper functions
  selftests/x86/sgx: Use standard helper function to signal pass/fail
  selftests/harness: Move operator macros to their own header file
  selftests/x86/sgx: Use kselftest operators to check test results
  selftests/x86/sgx: Handle setup failures via kselftest assertions
  selftests/x86/sgx: Add a check on the vDSO exception reporting
    mechanism
  selftests/x86/sgx: Add test of vDSO with basic exit handler
  selftests/x86/sgx: Add check to verify exit handler stack alignment
  selftests/x86/sgx: Add test for exception behavior with exit handler

 Documentation/dev-tools/kselftest.rst         |   9 +-
 MAINTAINERS                                   |   1 +
 tools/testing/selftests/kselftest_harness.h   | 246 +---------
 tools/testing/selftests/kselftest_operators.h | 255 +++++++++++
 tools/testing/selftests/x86/sgx/Makefile      |   2 +-
 tools/testing/selftests/x86/sgx/defines.h     |   7 +
 tools/testing/selftests/x86/sgx/main.c        | 426 +++++++++++-------
 tools/testing/selftests/x86/sgx/sgx_call.h    |   3 +-
 8 files changed, 541 insertions(+), 408 deletions(-)
 create mode 100644 tools/testing/selftests/kselftest_operators.h

-- 
2.22.0