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[PATCH RFC v2 0/5] add arm64 cross compilation support to BPF samples

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The series adds cross compiler support for BPF samples and fixes issues
building for arm64.

Tested on my arm64 platform with good results, for x86 I have only build tested
it. There are no errors on building, however there is a build warning for x86
which I haven't yet gotten rid off (I believe the warning itself isn't of
consequence but rather a result of using the preprocessor in this way). I
appreciate any help testing for x86 and looking forward to any feedback on the
patches, thanks!

v2 just adds Juri's correct email address as he's interested in this work.
Sorry about the noise, thanks!

Joel Fernandes (5):
  samples/bpf: Use getppid instead of getpgrp for array map stress
  samples/bpf: Enable cross compiler support
  samples/bpf: Fix inline asm issues building samples on arm64
  samples/bpf: Fix pt_regs issues when cross-compiling
  samples/bpf: Add documentation on cross compilation

 samples/bpf/Makefile             | 46 +++++++++++++++++++++++++-----
 samples/bpf/README.rst           | 10 +++++++
 samples/bpf/arm64_asmstubs.h     |  3 ++
 samples/bpf/bpf_helpers.h        | 61 ++++++++++++++++++++++++++++++++--------
 samples/bpf/generic_asmstubs.h   |  4 +++
 samples/bpf/map_perf_test_kern.c |  2 +-
 samples/bpf/map_perf_test_user.c |  2 +-
 7 files changed, 107 insertions(+), 21 deletions(-)
 create mode 100644 samples/bpf/arm64_asmstubs.h
 create mode 100644 samples/bpf/generic_asmstubs.h

CC: Alexei Starovoitov <ast@kernel.org>
CC: Daniel Borkmann <daniel@iogearbox.net>

-- 
2.14.0.rc1.383.gd1ce394fe2-goog

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[PATCH RFC v2 0/5] add arm64 cross compilation support to BPF samples Joel Fernandes <joelaf@google.com> - 2017-08-07 15:10 +0200
  [PATCH RFC v2 4/5] samples/bpf: Fix pt_regs issues when cross-compiling Joel Fernandes <joelaf@google.com> - 2017-08-07 15:10 +0200
  [PATCH RFC v2 3/5] samples/bpf: Fix inline asm issues building samples on arm64 Joel Fernandes <joelaf@google.com> - 2017-08-07 15:10 +0200
    Re: [PATCH RFC v2 3/5] samples/bpf: Fix inline asm issues building  samples on arm64 Joel Fernandes <joelaf@google.com> - 2017-08-07 15:20 +0200
    Re: [PATCH RFC v2 3/5] samples/bpf: Fix inline asm issues building  samples on arm64 David Miller <davem@davemloft.net> - 2017-08-07 20:30 +0200
      Re: [PATCH RFC v2 3/5] samples/bpf: Fix inline asm issues building  samples on arm64 Joel Fernandes <joelaf@google.com> - 2017-08-08 03:30 +0200
        Re: [PATCH RFC v2 3/5] samples/bpf: Fix inline asm issues building  samples on arm64 David Miller <davem@davemloft.net> - 2017-08-09 05:40 +0200

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