[PATCH v2 0/8] bpf powerpc: Add BPF_PROBE_MEM support in powerpc JIT compiler
From: Hari Bathini <hbathini@linux.ibm.com>
Date: 2021-09-17 15:31:56
Also in:
bpf, linuxppc-dev
Patch #1 & #2 are simple cleanup patches. Patch #3 refactors JIT compiler code with the aim to simplify adding BPF_PROBE_MEM support. Patch #4 introduces PPC_RAW_BRANCH() macro instead of open coding branch instruction. Patch #5 & #7 add BPF_PROBE_MEM support for PPC64 & PPC32 JIT compilers respectively. Patch #6 & #8 add explicit addr > TASK_SIZE_MAX check to handle bad userspace pointers for PPC64 & PPC32 cases respectively. Link to v1 posted by Ravi: https://lore.kernel.org/all/20210706073211.349889-1-ravi.bangoria@linux.ibm.com/ (local) ("[PATCH 0/4] bpf powerpc: Add BPF_PROBE_MEM support for 64bit JIT") Hari Bathini (4): bpf powerpc: refactor JIT compiler code powerpc/ppc-opcode: introduce PPC_RAW_BRANCH() macro bpf ppc32: Add BPF_PROBE_MEM support for JIT bpf ppc32: Add addr > TASK_SIZE_MAX explicit check Ravi Bangoria (4): bpf powerpc: Remove unused SEEN_STACK bpf powerpc: Remove extra_pass from bpf_jit_build_body() bpf ppc64: Add BPF_PROBE_MEM support for JIT bpf ppc64: Add addr > TASK_SIZE_MAX explicit check arch/powerpc/include/asm/ppc-opcode.h | 2 + arch/powerpc/net/bpf_jit.h | 19 ++-- arch/powerpc/net/bpf_jit_comp.c | 75 ++++++++++++++-- arch/powerpc/net/bpf_jit_comp32.c | 123 +++++++++++++++++++++----- arch/powerpc/net/bpf_jit_comp64.c | 114 ++++++++++++++++-------- 5 files changed, 260 insertions(+), 73 deletions(-) -- 2.31.1