kexec: move some memembers and definitions within the scope of CONFIG_KEXEC_FILE

Move the stuff currently only used by the kexec file code within
CONFIG_KEXEC_FILE (and CONFIG_KEXEC_VERIFY_SIG).

Also move internal "struct kexec_sha_region" and "struct kexec_buf" into
"kexec_internal.h".

Signed-off-by: Xunlei Pang <xlpang@redhat.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Dave Young <dyoung@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/kernel/kexec_file.c b/kernel/kexec_file.c
index b70ada0028d2..007b791f676d 100644
--- a/kernel/kexec_file.c
+++ b/kernel/kexec_file.c
@@ -109,11 +109,13 @@ int __weak arch_kimage_file_post_load_cleanup(struct kimage *image)
         return -EINVAL;
 }
 
+#ifdef CONFIG_KEXEC_VERIFY_SIG
 int __weak arch_kexec_kernel_verify_sig(struct kimage *image, void *buf,
                                         unsigned long buf_len)
 {
         return -EKEYREJECTED;
 }
+#endif
 
 /* Apply relocations of type RELA */
 int __weak