[GIT PULL] objtool changes for v6.3

[Ingo Molnar]

Linus,

Please pull the latest objtool/core git tree from:

   git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git objtool-core-2023-03-02

   # HEAD: 00c8f01c4e84637c3db76f368b8687cb61f4dd9d objtool: Fix ORC 'signal' propagation

NOTE:

 - We had to perform a rebase of 10 tail commits a week ago & merged in an 
   upstream tree within the merge window [585a78c1f77b], to eliminate
   3 duplicate commits with the Xen tree that are already upstream. (This
   was a cross-tree cooperation mishap we didn't want to cause duplicate
   upstream commits - just in case you are wondering about the merge commit.)

Changes in this cycle were:

 - Shrink 'struct instruction', to improve objtool performance & memory
   footprint.

 - Other maximum memory usage reductions - this makes the build both faster,
   and fixes kernel build OOM failures on allyesconfig and similar configs
   when they try to build the final (large) vmlinux.o.

 - Fix ORC unwinding when a kprobe (INT3) is set on a stack-modifying
   single-byte instruction (PUSH/POP or LEAVE). This requires the
   extension of the ORC metadata structure with a 'signal' field.

 - Misc fixes & cleanups.

 Thanks,

	Ingo

------------------>
Ian Rogers (3):
      objtool: Install libsubcmd in build
      objtool: Properly support make V=1
      objtool: Fix HOSTCC flag usage

Josh Poimboeuf (3):
      x86/unwind/orc: Add 'signal' field to ORC metadata
      x86/entry: Fix unwinding from kprobe on PUSH/POP instruction
      objtool: Fix ORC 'signal' propagation

Miaoqian Lin (1):
      objtool: Fix memory leak in create_static_call_sections()

Michal Kubecek (1):
      objtool: Check that module init/exit function is an indirect call target

Peter Zijlstra (9):
      objtool: Change arch_decode_instruction() signature
      objtool: Make instruction::stack_ops a single-linked list
      objtool: Make instruction::alts a single-linked list
      objtool: Shrink instruction::{type,visited}
      objtool: Remove instruction::reloc
      objtool: Union instruction::{call_dest,jump_table}
      objtool: Fix overlapping alternatives
      x86: Fix FILL_RETURN_BUFFER
      objtool: Remove instruction::list

Thomas Weißschuh (5):
      objtool: Make struct entries[] static and const
      objtool: Make struct check_options static
      objtool: Allocate multiple structures with calloc()
      objtool: Optimize layout of struct symbol
      objtool: Optimize layout of struct special_alt


 arch/x86/entry/entry_64.S               |   9 +-
 arch/x86/include/asm/nospec-branch.h    |   2 +-
 arch/x86/include/asm/orc_types.h        |   4 +-
 arch/x86/include/asm/unwind_hints.h     |  10 +-
 arch/x86/kernel/unwind_orc.c            |   5 +-
 include/linux/objtool.h                 |  11 +-
 tools/arch/x86/include/asm/orc_types.h  |   4 +-
 tools/include/linux/objtool.h           |  11 +-
 tools/objtool/.gitignore                |   1 +
 tools/objtool/Build                     |   2 -
 tools/objtool/Documentation/objtool.txt |   8 +
 tools/objtool/Makefile                  |  66 ++++--
 tools/objtool/arch/powerpc/decode.c     |  22 +-
 tools/objtool/arch/x86/decode.c         | 107 +++++----
 tools/objtool/builtin-check.c           |   2 +-
 tools/objtool/check.c                   | 375 ++++++++++++++++++++------------
 tools/objtool/elf.c                     |  42 ++--
 tools/objtool/include/objtool/arch.h    |   6 +-
 tools/objtool/include/objtool/builtin.h |   2 -
 tools/objtool/include/objtool/cfi.h     |   1 +
 tools/objtool/include/objtool/check.h   |  61 +++---
 tools/objtool/include/objtool/elf.h     |   9 +-
 tools/objtool/include/objtool/objtool.h |   1 -
 tools/objtool/include/objtool/special.h |   2 +-
 tools/objtool/objtool.c                 |   1 -
 tools/objtool/orc_dump.c                |   4 +-
 tools/objtool/orc_gen.c                 |   1 +
 tools/objtool/special.c                 |   6 +-
 28 files changed, 455 insertions(+), 320 deletions(-)