[GIT PULL v2] objtool changes for v5.10

[Ingo Molnar]

* Ingo Molnar <mingo@xxxxxxxxxx> wrote:

> > This seems to be missing
> > 
> > https://lore.kernel.org/lkml/patch-1.thread-251403.git-2514037e9477.your-ad-here.call-01602244460-ext-7088@work.hours/
> > 
> > or did that get sent in a previous pull request?
> 
> No, that fix is still missing, thanks for the reminder. I overlooked it 
> thinking that it's a tooling patch - but this needs to be paired with:
> 
>   2486baae2cf6: ("objtool: Allow nested externs to enable BUILD_BUG()")
> 
> I'll send a v2 pull request in an hour or two.

Linus,

Please pull the latest objtool/core git tree from:

   git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git objtool-core-2020-10-13

   # HEAD: ab0a40ea88204e1291b56da8128e2845fec8ee88 perf build: Allow nested externs to enable BUILD_BUG() usage

objtool changes for v5.10:

 - Most of the changes are cleanups and reorganization to make the objtool code
   more arch-agnostic. This is in preparation for non-x86 support.

Fixes:

 - KASAN fixes.
 - Handle unreachable trap after call to noreturn functions better.
 - Ignore unreachable fake jumps.
 - Misc smaller fixes & cleanups.

 Thanks,

	Ingo

------------------>
Ilie Halip (1):
      objtool: Ignore unreachable trap after call to noreturn functions

Jann Horn (1):
      objtool: Permit __kasan_check_{read,write} under UACCESS

Julien Thierry (16):
      objtool: Move object file loading out of check()
      objtool: Move ORC logic out of check()
      objtool: Skip ORC entry creation for non-text sections
      objtool: Define 'struct orc_entry' only when needed
      objtool: Group headers to check in a single list
      objtool: Make sync-check consider the target architecture
      objtool: Move macros describing structures to arch-dependent code
      objtool: Abstract alternative special case handling
      objtool: Make relocation in alternative handling arch dependent
      objtool: Rename frame.h -> objtool.h
      objtool: Only include valid definitions depending on source file type
      objtool: Make unwind hint definitions available to other architectures
      objtool: Decode unwind hint register depending on architecture
      objtool: Remove useless tests before save_reg()
      objtool: Ignore unreachable fake jumps
      objtool: Handle calling non-function symbols in other sections

Raphael Gault (1):
      objtool: Refactor jump table code to support other architectures

Vasily Gorbik (2):
      objtool: Allow nested externs to enable BUILD_BUG()
      perf build: Allow nested externs to enable BUILD_BUG() usage


 MAINTAINERS                                   |   1 +
 arch/x86/include/asm/nospec-branch.h          |   2 +-
 arch/x86/include/asm/orc_types.h              |  34 ----
 arch/x86/include/asm/unwind_hints.h           |  56 ++-----
 arch/x86/kernel/kprobes/core.c                |   2 +-
 arch/x86/kernel/kprobes/opt.c                 |   2 +-
 arch/x86/kernel/reboot.c                      |   2 +-
 arch/x86/kernel/unwind_orc.c                  |  11 +-
 arch/x86/kvm/svm/svm.c                        |   2 +-
 arch/x86/kvm/vmx/nested.c                     |   2 +-
 arch/x86/kvm/vmx/vmx.c                        |   2 +-
 arch/x86/xen/enlighten_pv.c                   |   2 +-
 drivers/gpu/drm/vmwgfx/vmwgfx_msg.c           |   3 +-
 include/linux/frame.h                         |  35 ----
 include/linux/objtool.h                       | 129 +++++++++++++++
 kernel/bpf/core.c                             |   2 +-
 kernel/kexec_core.c                           |   2 +-
 tools/arch/x86/include/asm/orc_types.h        |  34 ----
 tools/include/linux/objtool.h                 | 129 +++++++++++++++
 tools/objtool/Makefile                        |   6 +-
 tools/objtool/arch.h                          |   4 +
 tools/objtool/arch/x86/Build                  |   1 +
 tools/objtool/arch/x86/decode.c               |  37 +++++
 tools/objtool/arch/x86/include/arch_special.h |  20 +++
 tools/objtool/arch/x86/special.c              | 145 ++++++++++++++++
 tools/objtool/builtin-check.c                 |  15 +-
 tools/objtool/builtin-orc.c                   |  27 ++-
 tools/objtool/check.c                         | 230 ++++++--------------------
 tools/objtool/check.h                         |   9 +-
 tools/objtool/objtool.c                       |  30 ++++
 tools/objtool/objtool.h                       |   6 +-
 tools/objtool/orc_dump.c                      |   9 +-
 tools/objtool/orc_gen.c                       |   8 +-
 tools/objtool/special.c                       |  48 +-----
 tools/objtool/special.h                       |  10 ++
 tools/objtool/sync-check.sh                   |  32 +++-
 tools/objtool/weak.c                          |   6 +-
 tools/perf/Makefile.config                    |   2 +-
 38 files changed, 686 insertions(+), 411 deletions(-)
 delete mode 100644 include/linux/frame.h
 create mode 100644 include/linux/objtool.h
 create mode 100644 tools/include/linux/objtool.h
 create mode 100644 tools/objtool/arch/x86/include/arch_special.h
 create mode 100644 tools/objtool/arch/x86/special.c