Thiago Jung Bauermann <[email protected]> writes:
> This test exercises read and write access to the AMR, IAMR and UAMOR.
>
> Signed-off-by: Thiago Jung Bauermann <[email protected]>
> ---
> tools/testing/selftests/powerpc/include/reg.h | 1 +
> tools/testing/selftests/powerpc/ptrace/Makefile | 5 +-
> tools/testing/selftests/powerpc/ptrace/child.h | 130 ++++++++
> .../testing/selftests/powerpc/ptrace/ptrace-pkey.c | 326
> +++++++++++++++++++++
This is failing on machines without pkeys:
test: ptrace_pkey
tags: git_version:52e7d87
[FAIL] Test FAILED on line 117
[FAIL] Test FAILED on line 191
failure: ptrace_pkey
I think the first fail is in the child here:
int ptrace_read_regs(pid_t child, unsigned long type, unsigned long regs[],
int n)
{
struct iovec iov;
long ret;
FAIL_IF(start_trace(child));
iov.iov_base = regs;
iov.iov_len = n * sizeof(unsigned long);
ret = ptrace(PTRACE_GETREGSET, child, type, &iov);
FAIL_IF(ret != 0);
Which makes sense.
The test needs to skip if pkeys are not available/enabled. Using the
availability of the REGSET might actually be a nice way to detect that,
because it's read-only.
cheers
