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Nicholas Piggin
d72500f992
The scv implementation missed updating syscall return value and error
value get/set functions to deal with the changed register ABI. This
broke ptrace PTRACE_GET_SYSCALL_INFO as well as some kernel auditing
and tracing functions.
Fix. tools/testing/selftests/ptrace/get_syscall_info now passes when
scv is used.
Fixes: 7fa95f9ada ("powerpc/64s: system call support for scv/rfscv instructions")
Cc: [email protected] # v5.9+
Reported-by: "Dmitry V. Levin" <[email protected]>
Signed-off-by: Nicholas Piggin <[email protected]>
Reviewed-by: Dmitry V. Levin <[email protected]>
Signed-off-by: Michael Ellerman <[email protected]>
Link: https://lore.kernel.org/r/[email protected]