Merge tag 'objtool-urgent-2025-04-10' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull misc objtool fixes from Ingo Molnar:

 - Remove the recently introduced ANNOTATE_IGNORE_ALTERNATIVE noise from
   clac()/stac() code to make .s files more readable

 - Fix INSN_SYSCALL / INSN_SYSRET semantics

 - Fix various false-positive warnings

* tag 'objtool-urgent-2025-04-10' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  objtool: Fix false-positive "ignoring unreachables" warning
  objtool: Remove ANNOTATE_IGNORE_ALTERNATIVE from CLAC/STAC
  objtool, xen: Fix INSN_SYSCALL / INSN_SYSRET semantics
  objtool: Stop UNRET validation on UD2
  objtool: Split INSN_CONTEXT_SWITCH into INSN_SYSCALL and INSN_SYSRET
  objtool: Fix INSN_CONTEXT_SWITCH handling in validate_unret()