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| author | Ravi Bangoria <ravi.bangoria@linux.ibm.com> | 2020-09-02 09:59:45 +0530 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2020-09-15 22:13:21 +1000 |
| commit | ac234524056da4e0c081f682da3ea25cdaab737a (patch) | |
| tree | a7e2edb055bf396028cf1c39d107cf7537bc9033 /tools/perf/scripts/python/bin | |
| parent | fa725cc53d353110f39a9e5b9f60d6acb2c7ff49 (diff) | |
| download | linux-ac234524056da4e0c081f682da3ea25cdaab737a.tar.gz linux-ac234524056da4e0c081f682da3ea25cdaab737a.zip | |
selftests/powerpc: Tests for kernel accessing user memory
Introduce tests to cover simple scenarios where user is watching
memory which can be accessed by kernel as well. We also support
_MODE_EXACT with _SETHWDEBUG interface. Move those testcases outside
of _BP_RANGE condition. This will help to test _MODE_EXACT scenarios
when CONFIG_HAVE_HW_BREAKPOINT is not set, eg:
$ ./ptrace-hwbreak
...
PTRACE_SET_DEBUGREG, Kernel Access Userspace, len: 8: Ok
PPC_PTRACE_SETHWDEBUG, MODE_EXACT, WO, len: 1: Ok
PPC_PTRACE_SETHWDEBUG, MODE_EXACT, RO, len: 1: Ok
PPC_PTRACE_SETHWDEBUG, MODE_EXACT, RW, len: 1: Ok
PPC_PTRACE_SETHWDEBUG, MODE_EXACT, Kernel Access Userspace, len: 1: Ok
success: ptrace-hwbreak
Suggested-by: Pedro Miraglia Franco de Carvalho <pedromfc@linux.ibm.com>
Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200902042945.129369-9-ravi.bangoria@linux.ibm.com
Diffstat (limited to 'tools/perf/scripts/python/bin')
0 files changed, 0 insertions, 0 deletions