Implement extended BPF JIT for ppc64. We retain the classic BPF JIT for ppc32 and move ppc64 BE/LE to use the new JIT. Classic BPF filters will be converted to extended BPF (see convert_filter()) and JIT'ed with the new compiler.
Most of the existing macros are retained and fixed/enhanced where appropriate. Patches 1-4 are geared towards this. Patch 5 breaks out the classic BPF JIT specifics into a separate bpf_jit32.h header file, while retaining all the generic instruction macros in bpf_jit.h. Patch 6 implements eBPF JIT for ppc64. Since the RFC patchset [1], powerpc JIT has now gained support for skb access helpers and now passes all tests in test_bpf.ko. Review comments on the RFC patches have been addressed (use of an ABI macro [2] and use of bpf_jit_binary_alloc()), along with a few other generic fixes and updates. Prominent TODOs: - implement BPF tail calls - support for BPF constant blinding Please note that patch [2] is a pre-requisite for this patchset, and is not yet upstream. - Naveen [1] http://thread.gmane.org/gmane.linux.kernel/2188694 [2] http://thread.gmane.org/gmane.linux.ports.ppc.embedded/96514 Naveen N. Rao (6): ppc: bpf/jit: Fix/enhance 32-bit Load Immediate implementation ppc: bpf/jit: Optimize 64-bit Immediate loads ppc: bpf/jit: Introduce rotate immediate instructions ppc: bpf/jit: A few cleanups ppc: bpf/jit: Isolate classic BPF JIT specifics into a separate header ppc: ebpf/jit: Implement JIT compiler for extended BPF arch/powerpc/Kconfig | 3 +- arch/powerpc/include/asm/asm-compat.h | 2 + arch/powerpc/include/asm/ppc-opcode.h | 22 +- arch/powerpc/net/Makefile | 4 + arch/powerpc/net/bpf_jit.h | 235 ++++----- arch/powerpc/net/bpf_jit32.h | 139 +++++ arch/powerpc/net/bpf_jit64.h | 102 ++++ arch/powerpc/net/bpf_jit_asm.S | 2 +- arch/powerpc/net/bpf_jit_asm64.S | 180 +++++++ arch/powerpc/net/bpf_jit_comp.c | 10 +- arch/powerpc/net/bpf_jit_comp64.c | 956 ++++++++++++++++++++++++++++++++++ 11 files changed, 1504 insertions(+), 151 deletions(-) create mode 100644 arch/powerpc/net/bpf_jit32.h create mode 100644 arch/powerpc/net/bpf_jit64.h create mode 100644 arch/powerpc/net/bpf_jit_asm64.S create mode 100644 arch/powerpc/net/bpf_jit_comp64.c -- 2.8.2 _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
