netdev - [PATCH v2 0/5] x86/bpf: unwinder fixes

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Date:   Fri, 14 Jun 2019 12:56:39 -0500
From:   Josh Poimboeuf <jpoimboe@...hat.com>
To:     x86@...nel.org, Alexei Starovoitov <ast@...nel.org>
Cc:     linux-kernel@...r.kernel.org,
        Daniel Borkmann <daniel@...earbox.net>, netdev@...r.kernel.org,
        bpf@...r.kernel.org, Peter Zijlstra <peterz@...radead.org>,
        Song Liu <songliubraving@...com>,
        Kairui Song <kasong@...hat.com>,
        Steven Rostedt <rostedt@...dmis.org>,
        David Laight <David.Laight@...LAB.COM>,
        Thomas Gleixner <tglx@...utronix.de>,
        Borislav Petkov <bp@...en8.de>, Ingo Molnar <mingo@...nel.org>
Subject: [PATCH v2 0/5] x86/bpf: unwinder fixes

v2:

- Simplified the frame pointer fixes - instead of using R12, just
  continue to use RBP for BPF_REG_FP, but use nested frames so the
  unwinder can understand (suggested by David Laight).

- Dropped the AT&T syntax patches for now.  I'm about to disappear for a
  week and I don't have time to argue about whether code readability is
  a good thing.

- I can do the 32-bit version of the fix when I get back.  It should be
  easy enough.

v1 is here:
https://lkml.kernel.org/r/cover.1560431531.git.jpoimboe@redhat.com


Josh Poimboeuf (4):
  objtool: Fix ORC unwinding in non-JIT BPF generated code
  x86/bpf: Move epilogue generation to a dedicated function
  x86/bpf: Fix 64-bit JIT frame pointer usage
  x86/unwind/orc: Fall back to using frame pointers for generated code

Song Liu (1):
  perf/x86: Always store regs->ip in perf_callchain_kernel()

 arch/x86/events/core.c       |  10 +--
 arch/x86/kernel/unwind_orc.c |  26 ++++++--
 arch/x86/net/bpf_jit_comp.c  | 115 +++++++++++++++++++----------------
 kernel/bpf/core.c            |   5 +-
 tools/objtool/check.c        |  16 ++++-
 5 files changed, 107 insertions(+), 65 deletions(-)

-- 
2.20.1