x86/entry: Make some entry symbols global

paranoid_entry(), error_entry() and xen_error_entry() have to be
exempted from call accounting by thunk patching because they are
before UNTRAIN_RET.

Expose them so they are available in the alternative code.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20220915111147.265598113@infradead.org

diff --git a/arch/x86/entry/entry_64.S b/arch/x86/entry/entry_64.S
index b24b84b..4cc0125 100644 (file)
--- a/arch/x86/entry/entry_64.S
+++ b/arch/x86/entry/entry_64.S
@@ -327,7 +327,8 @@ SYM_CODE_END(ret_from_fork)
 #endif
 .endm
 
-SYM_CODE_START_LOCAL(xen_error_entry)
+SYM_CODE_START(xen_error_entry)
+       ANNOTATE_NOENDBR
        UNWIND_HINT_FUNC
        PUSH_AND_CLEAR_REGS save_ret=1
        ENCODE_FRAME_POINTER 8
@@ -906,7 +907,8 @@ SYM_CODE_END(xen_failsafe_callback)
  * R14 - old CR3
  * R15 - old SPEC_CTRL
  */
-SYM_CODE_START_LOCAL(paranoid_entry)
+SYM_CODE_START(paranoid_entry)
+       ANNOTATE_NOENDBR
        UNWIND_HINT_FUNC
        PUSH_AND_CLEAR_REGS save_ret=1
        ENCODE_FRAME_POINTER 8
@@ -1041,7 +1043,8 @@ SYM_CODE_END(paranoid_exit)
 /*
  * Switch GS and CR3 if needed.
  */
-SYM_CODE_START_LOCAL(error_entry)
+SYM_CODE_START(error_entry)
+       ANNOTATE_NOENDBR
        UNWIND_HINT_FUNC
 
        PUSH_AND_CLEAR_REGS save_ret=1