Use $(KHDR_INCLUDES) as lookup path for kernel headers. This prevents
building against kernel headers from the build environment in scenarios
where kernel headers are installed into a specific output directory
(O=...).

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: linux-kselftest@vger.kernel.org
Cc: Ingo Molnar <mingo@redhat.com>
Cc: <stable@vger.kernel.org>  # 5.18+
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>

Stop using the KSFT_KHDR_INSTALL flag as installing the kernel headers
from the kselftest Makefile is causing some issues.  Instead, rely on
the headers to be installed directly by the top-level Makefile
"headers_install" make target prior to building kselftest.

Signed-off-by: Guillaume Tucker <guillaume.tucker@collabora.com>
Tested-by: Anders Roxell <anders.roxell@linaro.org>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>

Adds some selftests to test ioctl error paths of the uv-uapi.
The Kconfig S390_UV_UAPI must be selected and the Ultravisor facility
must be available. The test can be executed by non-root, however, the
uvdevice special file /dev/uv must be accessible for reading and
writing which may imply root privileges.

  ./test-uv-device
  TAP version 13
  1..6
  # Starting 6 tests from 3 test cases.
  #  RUN           uvio_fixture.att.fault_ioctl_arg ...
  #            OK  uvio_fixture.att.fault_ioctl_arg
  ok 1 uvio_fixture.att.fault_ioctl_arg
  #  RUN           uvio_fixture.att.fault_uvio_arg ...
  #            OK  uvio_fixture.att.fault_uvio_arg
  ok 2 uvio_fixture.att.fault_uvio_arg
  #  RUN           uvio_fixture.att.inval_ioctl_cb ...
  #            OK  uvio_fixture.att.inval_ioctl_cb
  ok 3 uvio_fixture.att.inval_ioctl_cb
  #  RUN           uvio_fixture.att.inval_ioctl_cmd ...
  #            OK  uvio_fixture.att.inval_ioctl_cmd
  ok 4 uvio_fixture.att.inval_ioctl_cmd
  #  RUN           attest_fixture.att_inval_request ...
  #            OK  attest_fixture.att_inval_request
  ok 5 attest_fixture.att_inval_request
  #  RUN           attest_fixture.att_inval_addr ...
  #            OK  attest_fixture.att_inval_addr
  ok 6 attest_fixture.att_inval_addr
  # PASSED: 6 / 6 tests passed.
  # Totals: pass:6 fail:0 xfail:0 xpass:0 skip:0 error:0

Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
Acked-by: Janosch Frank <frankja@linux.ibm.com>
Message-Id: <20220510144724.3321985-3-seiden@linux.ibm.com>
Link: https://lore.kernel.org/kvm/20220510144724.3321985-3-seiden@linux.ibm.com/
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>