powerpc: fix function annotations to avoid section mismatch warnings with gcc-10

Certain warnings are emitted for powerpc code when building with a gcc-10
toolset:

    WARNING: modpost: vmlinux.o(.text.unlikely+0x377c): Section mismatch in
    reference from the function remove_pmd_table() to the function
    .meminit.text:split_kernel_mapping()
    The function remove_pmd_table() references
    the function __meminit split_kernel_mapping().
    This is often because remove_pmd_table lacks a __meminit
    annotation or the annotation of split_kernel_mapping is wrong.

Add the appropriate __init and __meminit annotations to make modpost not
complain. In all the cases there are just a single callsite from another
__init or __meminit function:

__meminit remove_pagetable() -> remove_pud_table() -> remove_pmd_table()
__init prom_init() -> setup_secure_guest()
__init xive_spapr_init() -> xive_spapr_disabled()

Signed-off-by: Vladis Dronov <vdronov@redhat.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200729133741.62789-1-vdronov@redhat.com

1 files changed, 2 insertions, 2 deletions

diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c
index f279a1f58fa7..ae7ec9903191 100644
--- a/arch/powerpc/kernel/prom_init.c
+++ b/arch/powerpc/kernel/prom_init.c
@@ -3270,7 +3270,7 @@ static int enter_secure_mode(unsigned long kbase, unsigned long fdt)
 /*
  * Call the Ultravisor to transfer us to secure memory if we have an ESM blob.
  */
-static void setup_secure_guest(unsigned long kbase, unsigned long fdt)
+static void __init setup_secure_guest(unsigned long kbase, unsigned long fdt)
 {
 	int ret;
 
@@ -3300,7 +3300,7 @@ static void setup_secure_guest(unsigned long kbase, unsigned long fdt)
 	}
 }
 #else
-static void setup_secure_guest(unsigned long kbase, unsigned long fdt)
+static void __init setup_secure_guest(unsigned long kbase, unsigned long fdt)
 {
 }
 #endif /* CONFIG_PPC_SVM */