[PATCH v2 0/6] MIPS seccomp_bpf self test and fixups

[Matt Redfearn]

These patches imporve seccomp support on MIPS.

Firstly support is added for building the seccomp_bpf self test for
MIPS. The
initial results of these tests were:

32bit kernel O32 userspace before: 48 / 48 pass
64bit kernel O32 userspace before: 47 / 48 pass
 Failures: TRAP.Handler
64bit kernel N32 userspace before: 44 / 48 pass
 Failures: global.mode_strict_support, TRAP.handler,
TRACE_syscall.syscall_redirected, TRACE_syscall.syscall_dropped
64bit kernel N64 userspace before: 46 / 48 pass
 Failures: TRACE_syscall.syscall_redirected,
TRACE_syscall.syscall_dropped

The subsequent patches fix issues that were causing the above tests to
fail. With
these fixes, the results are:
32bit kernel O32 userspace after: 48 / 48
64bit kernel O32 userspace after: 48 / 48
64bit kernel N32 userspace after: 48 / 48
64bit kernel N64 userspace after: 48 / 48

Thanks,
Matt

Changes in v2:
- Tested on additional platforms
- Replace __NR_syscall which isn't defined for N32 / N64 ABIs

Matt Redfearn (6):
  selftests/seccomp: add MIPS self-test support
  MIPS: Support sending SIG_SYS to 32bit userspace from 64bit kernel
  MIPS: scall: Handle seccomp filters which redirect syscalls
  seccomp: Get compat syscalls from asm-generic header
  MIPS: seccomp: Support compat with both O32 and N32
  secomp: Constify mode1 syscall whitelist

 arch/mips/include/asm/seccomp.h               | 47 +++++++++++++++------------
 arch/mips/kernel/scall32-o32.S                | 11 +++----
 arch/mips/kernel/scall64-64.S                 |  3 +-
 arch/mips/kernel/scall64-n32.S                | 14 +++++---
 arch/mips/kernel/scall64-o32.S                | 14 +++++---
 arch/mips/kernel/signal32.c                   |  6 ++++
 include/asm-generic/seccomp.h                 | 14 ++++++++
 kernel/seccomp.c                              | 13 ++------
 tools/testing/selftests/seccomp/seccomp_bpf.c | 30 +++++++++++++++--
 9 files changed, 101 insertions(+), 51 deletions(-)

-- 
2.5.0