On Fri, Oct 1, 2021 at 11:15 PM Naveen N. Rao
[off-list ref] wrote:

Various fixes to the eBPF JIT for powerpc, thanks to some new tests
added by Johan. This series fixes all failures in test_bpf on powerpc64.
There are still some failures on powerpc32 to be looked into.

Great work! I have tested it on powerpc64 in QEMU, which is the same
setup that previously triggered an illegal instruction, and all tests
pass now. On powerpc32 there are still some issues left as you say.

Thanks!
Johan

- Naveen


Naveen N. Rao (8):
  powerpc/lib: Add helper to check if offset is within conditional
    branch range
  powerpc/bpf: Validate branch ranges
  powerpc/bpf: Handle large branch ranges with BPF_EXIT
  powerpc/bpf: Fix BPF_MOD when imm == 1
  powerpc/bpf: Fix BPF_SUB when imm == 0x80000000
  powerpc/bpf: Limit 'ldbrx' to processors compliant with ISA v2.06
  powerpc/security: Add a helper to query stf_barrier type
  powerpc/bpf: Emit stf barrier instruction sequences for BPF_NOSPEC

Ravi Bangoria (1):
  powerpc/bpf: Remove unused SEEN_STACK

 arch/powerpc/include/asm/code-patching.h     |   1 +
 arch/powerpc/include/asm/ppc-opcode.h        |   1 +
 arch/powerpc/include/asm/security_features.h |   5 +
 arch/powerpc/kernel/security.c               |   5 +
 arch/powerpc/lib/code-patching.c             |   7 +-
 arch/powerpc/net/bpf_jit.h                   |  39 ++++---
 arch/powerpc/net/bpf_jit64.h                 |   8 +-
 arch/powerpc/net/bpf_jit_comp.c              |  28 ++++-
 arch/powerpc/net/bpf_jit_comp32.c            |  10 +-
 arch/powerpc/net/bpf_jit_comp64.c            | 113 ++++++++++++++-----
 10 files changed, 167 insertions(+), 50 deletions(-)


base-commit: 044c2d99d9f43c6d6fde8bed00672517dd9a5a57
--
2.33.0