linux-kernel - [PATCH v3 0/4] x86: bpf unwinder fixes

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Message-Id: <cover.1561595111.git.jpoimboe@redhat.com>
Date:   Wed, 26 Jun 2019 19:33:51 -0500
From:   Josh Poimboeuf <jpoimboe@...hat.com>
To:     x86@...nel.org
Cc:     linux-kernel@...r.kernel.org,
        Peter Zijlstra <peterz@...radead.org>,
        Song Liu <songliubraving@...com>,
        Kairui Song <kasong@...hat.com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Borislav Petkov <bp@...en8.de>, Ingo Molnar <mingo@...nel.org>
Subject: [PATCH v3 0/4] x86: bpf unwinder fixes

v3:

- Drop even more NACKed BPF changes.

- Coincidentally, a separate fix has already been merged for JIT frame
  pointers:

    fe8d9571dc50 ("bpf, x64: fix stack layout of JITed bpf code")

- 32-bit JIT frame pointers are still broken.  I have a small patch
  which should fix it, if anybody wants to try interacting with the
  maintainer.

- Split the objtool jump table detection feature into a separate patch
  to clarify that it's a generic objtool feature.

Josh Poimboeuf (3):
  objtool: Add support for C jump tables
  bpf: Fix ORC unwinding in non-JIT BPF code
  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 ++++++++++++++++++++++----
 kernel/bpf/core.c            |  5 ++---
 tools/objtool/check.c        | 16 ++++++++++++++--
 4 files changed, 43 insertions(+), 14 deletions(-)

-- 
2.20.1