----- On Apr 29, 2019, at 11:27 AM, Mathieu Desnoyers mathieu.desnoyers@xxxxxxxxxxxx wrote: > Those rseq selftests updates are hereby submitted to Shuah Khan, > maintainer of kernel selftests, for the next merge window (5.2). > > They change the per-architecture pre-abort signatures to ensure those > are valid trap instructions. > > The way exit points are presented to debuggers is enhanced, ensuring > all exit points are present, so debuggers don't have to disassemble > rseq critical section to properly skip over them. > > Discussions with the glibc community is reaching a concensus of exposing > a __rseq_handled symbol from glibc to coexist with rseq early adopters. > Update the rseq selftest code to expose and use this symbol. > > Support for compiling asm goto with clang is added with the > "-no-integrated-as" compiler switch, similarly to the toplevel kernel > Makefile. Hi Shuah, Is there anything else you need before you can pick up those patches ? Thanks, Mathieu > > Thanks, > > Mathieu > > Martin Schwidefsky (1): > rseq/selftests: s390: use trap4 for RSEQ_SIG > > Mathieu Desnoyers (11): > rseq/selftests: x86: Work-around bogus gcc-8 optimisation > rseq/selftests: Add __rseq_exit_point_array section for debuggers > rseq/selftests: Introduce __rseq_cs_ptr_array, rename __rseq_table to > __rseq_cs > rseq/selftests: Use __rseq_handled symbol to coexist with glibc > rseq/selftests: s390: use jg instruction for jumps outside of the asm > rseq/selftests: x86: use ud1 instruction as RSEQ_SIG opcode > rseq/selftests: arm: use udf instruction for RSEQ_SIG > rseq/selftests: aarch64 code signature: handle big-endian environment > rseq/selftests: powerpc code signature: generate valid instructions > rseq/selftests: mips: use break instruction for RSEQ_SIG > rseq/selftests: add -no-integrated-as for clang > > tools/testing/selftests/rseq/Makefile | 8 +- > tools/testing/selftests/rseq/rseq-arm.h | 132 +++++++++++++-- > tools/testing/selftests/rseq/rseq-arm64.h | 74 ++++++++- > tools/testing/selftests/rseq/rseq-mips.h | 115 +++++++++++-- > tools/testing/selftests/rseq/rseq-ppc.h | 90 +++++++++- > tools/testing/selftests/rseq/rseq-s390.h | 78 ++++++++- > tools/testing/selftests/rseq/rseq-x86.h | 264 +++++++++++++++++++++--------- > tools/testing/selftests/rseq/rseq.c | 55 ++++++- > tools/testing/selftests/rseq/rseq.h | 1 + > 9 files changed, 688 insertions(+), 129 deletions(-) > > -- > 2.11.0 -- Mathieu Desnoyers EfficiOS Inc. http://www.efficios.com
