linux/arch/x86/include
Linus Torvalds 44688ffd11 A set of objtool fixes:
- Handle __ubsan_handle_builtin_unreachable() correctly and treat it as
     noreturn.
 
   - Allow architectures to select uaccess validation
 
   - Use the non-instrumented bit test for test_cpu_has() to prevent escape
     from non-instrumentable regions.
 
   - Use arch_ prefixed atomics for JUMP_LABEL=n builds to prevent escape
     from non-instrumentable regions.
 
   - Mark a few tiny inline as __always_inline to prevent GCC from bringing
     them out of line and instrumenting them.
 
   - Mark the empty stub context_tracking_enabled() as always inline as GCC
     brings them out of line and instruments the empty shell.
 
   - Annotate ex_handler_msr_mce() as dead end
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Merge tag 'objtool-urgent-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull objtool fixes from Thomas Gleixner:

 - Handle __ubsan_handle_builtin_unreachable() correctly and treat it as
   noreturn

 - Allow architectures to select uaccess validation

 - Use the non-instrumented bit test for test_cpu_has() to prevent
   escape from non-instrumentable regions

 - Use arch_ prefixed atomics for JUMP_LABEL=n builds to prevent escape
   from non-instrumentable regions

 - Mark a few tiny inline as __always_inline to prevent GCC from
   bringing them out of line and instrumenting them

 - Mark the empty stub context_tracking_enabled() as always inline as
   GCC brings them out of line and instruments the empty shell

 - Annotate ex_handler_msr_mce() as dead end

* tag 'objtool-urgent-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/extable: Annotate ex_handler_msr_mce() as a dead end
  context_tracking: Always inline empty stubs
  x86: Always inline on_thread_stack() and current_top_of_stack()
  jump_label,noinstr: Avoid instrumentation for JUMP_LABEL=n builds
  x86/cpu: Elide KCSAN for cpu_has() and friends
  objtool: Mark __ubsan_handle_builtin_unreachable() as noreturn
  objtool: Add CONFIG_HAVE_UACCESS_VALIDATION
2022-06-05 09:45:27 -07:00
..
asm A set of objtool fixes: 2022-06-05 09:45:27 -07:00
uapi/asm S390: 2022-05-26 14:20:14 -07:00