objtool throws unannotated intra-function call warnings
in the following assembly files:

arch/powerpc/kernel/vector.o: warning: objtool: .text+0x53c: unannotated intra-function call

arch/powerpc/kvm/book3s_hv_rmhandlers.o: warning: objtool: .text+0x60: unannotated intra-function call
arch/powerpc/kvm/book3s_hv_rmhandlers.o: warning: objtool: .text+0x124: unannotated intra-function call
arch/powerpc/kvm/book3s_hv_rmhandlers.o: warning: objtool: .text+0x5d4: unannotated intra-function call
arch/powerpc/kvm/book3s_hv_rmhandlers.o: warning: objtool: .text+0x5dc: unannotated intra-function call
arch/powerpc/kvm/book3s_hv_rmhandlers.o: warning: objtool: .text+0xcb8: unannotated intra-function call
arch/powerpc/kvm/book3s_hv_rmhandlers.o: warning: objtool: .text+0xd0c: unannotated intra-function call
arch/powerpc/kvm/book3s_hv_rmhandlers.o: warning: objtool: .text+0x1030: unannotated intra-function call

arch/powerpc/kernel/head_64.o: warning: objtool: .text+0x358: unannotated intra-function call
arch/powerpc/kernel/head_64.o: warning: objtool: .text+0x728: unannotated intra-function call
arch/powerpc/kernel/head_64.o: warning: objtool: .text+0x4d94: unannotated intra-function call
arch/powerpc/kernel/head_64.o: warning: objtool: .text+0x4ec4: unannotated intra-function call

arch/powerpc/kvm/book3s_hv_interrupts.o: warning: objtool: .text+0x6c: unannotated intra-function call
arch/powerpc/kernel/misc_64.o: warning: objtool: .text+0x64: unannotated intra-function call

objtool does not add STT_NOTYPE symbols with size 0 to the
rbtree, which is why find_call_destination() function is not able
to find the destination symbol for 'bl' instruction. For such symbols,
objtool is throwing unannotated intra-function call warnings in
assembly files. Fix these warnings by adding SYM_FUNC_START_LOCAL()
and SYM_FUNC_END() annotations to those symbols to be able to set symbol
type to STT_FUNC and set size of these symbols accordingly.

Signed-off-by: Sathvika Vasireddy <redacted>
---
  arch/powerpc/kernel/exceptions-64s.S    |  7 +++++--
  arch/powerpc/kernel/head_64.S           |  7 +++++--
  arch/powerpc/kernel/misc_64.S           |  4 +++-
  arch/powerpc/kernel/vector.S            |  4 +++-
  arch/powerpc/kvm/book3s_hv_interrupts.S |  4 +++-
  arch/powerpc/kvm/book3s_hv_rmhandlers.S | 22 +++++++++++++++-------
  6 files changed, 34 insertions(+), 14 deletions(-)

diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S
index 3d0dc133a9ae..4242c1a20bcd 100644
--- a/arch/powerpc/kernel/exceptions-64s.S
+++ b/arch/powerpc/kernel/exceptions-64s.S

@@ -20,6 +20,7 @@
  #include <asm/head-64.h>
  #include <asm/feature-fixups.h>
  #include <asm/kup.h>
+#include <linux/linkage.h>