[PATCH bpf-next v3 00/11] libbpf: Fix accessing syscall arguments

[Ilya Leoshkevich <iii@linux.ibm.com>]

libbpf now has macros to access syscall arguments in an
architecture-agnostic manner, but unfortunately they have a number of
issues on non-Intel arches, which this series aims to fix.

v1: https://lore.kernel.org/bpf/20220201234200.1836443-1-iii@linux.ibm.com/
v1 -> v2:
* Put orig_gpr2 in place of args[1] on s390 (Vasily).
* Fix arm64, powerpc and riscv (Heiko).

v2: https://lore.kernel.org/bpf/20220204041955.1958263-1-iii@linux.ibm.com/
v2 -> v3:
* Undo args[1] change (Andrii).
* Rename PT_REGS_SYSCALL to PT_REGS_SYSCALL_REGS (Andrii).
* Split the riscv patch (Andrii).

+cc Naveen.

Ilya Leoshkevich (11):
  arm64/bpf: Add orig_x0 to user_pt_regs
  s390/bpf: Add orig_gpr2 to user_pt_regs
  selftests/bpf: Fix an endianness issue in bpf_syscall_macro test
  libbpf: Add __PT_PARM1_REG_SYSCALL macro
  libbpf: Add PT_REGS_SYSCALL_REGS macro
  selftests/bpf: Use PT_REGS_SYSCALL_REGS in bpf_syscall_macro
  libbpf: Fix accessing the first syscall argument on arm64
  libbpf: Fix accessing syscall arguments on powerpc
  libbpf: Fix accessing program counter on riscv
  libbpf: Fix accessing syscall arguments on riscv
  libbpf: Fix accessing the first syscall argument on s390

 arch/arm64/include/asm/ptrace.h               |  2 +-
 arch/arm64/include/uapi/asm/ptrace.h          |  1 +
 arch/s390/include/asm/ptrace.h                |  2 +-
 arch/s390/include/uapi/asm/ptrace.h           |  1 +
 tools/lib/bpf/bpf_tracing.h                   | 23 ++++++++++++++++++-
 .../selftests/bpf/progs/bpf_syscall_macro.c   |  7 ++++--
 6 files changed, 31 insertions(+), 5 deletions(-)

-- 
2.34.1