Re: [PATCH v5 00/15] powerpc/objtool: uaccess validation for PPC32 (v5)

On Wed, Jan 15, 2025 at 11:42:40PM +0100, Christophe Leroy wrote:

Christophe Leroy (15):
  objtool: Fix generic annotation infrastructure cross build
  objtool: Move back misplaced comment
  objtool: Allow an architecture to disable objtool on ASM files
  objtool: Fix JUMP_ENTRY_SIZE for bi-arch like powerpc
  objtool: Add INSN_RETURN_CONDITIONAL
  objtool: Add support for relative switch tables
  objtool: Merge mark_func_jump_tables() and add_func_jump_tables()
  objtool: Track general purpose register used for switch table base
  objtool: Find end of switch table directly
  objtool: When looking for switch tables also follow conditional and
    dynamic jumps
  objtool: .rodata.cst{2/4/8/16} are not switch tables
  objtool: Add support for more complex UACCESS control
  objtool: Prepare noreturns.h for more architectures
  powerpc/bug: Annotate reachable after warning trap
  powerpc: Implement UACCESS validation on PPC32

This mostly looks okay to me. You have a tendency to violate the reverse
xmas tree for variables thing, but meh.

I would like Josh to have a hard look at this though, jump tables are
his thing :-)