From dde4e95fa4c3888971f7439df6b35b036b949b3f Mon Sep 17 00:00:00 2001
From: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com>
Date: Sun, 9 Jul 2017 23:44:12 -0400
Subject: [PATCH] kpatch-build: Build with insn support only on x86_64

kpatch-build/insn provides x86 instruction analysis, disable
the analyzer support when build on powerpc.

Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com>
---
 kpatch-build/Makefile             | 10 ++++++++--
 kpatch-build/create-diff-object.c | 11 +++++++++++
 2 files changed, 19 insertions(+), 2 deletions(-)

diff --git a/kpatch-build/Makefile b/kpatch-build/Makefile
index 6445cbb..6a1248a 100644
--- a/kpatch-build/Makefile
+++ b/kpatch-build/Makefile
@@ -7,7 +7,13 @@ TARGETS = create-diff-object create-klp-module create-kpatch-module
 SOURCES = create-diff-object.c kpatch-elf.c \
 		  create-klp-module.c \
 		  create-kpatch-module.c \
-		  lookup.c insn/insn.c insn/inat.c
+		  create-kpatch-module.c lookup.c
+
+ifeq ($(ARCH),x86_64)
+SOURCES += insn/insn.c insn/inat.c
+INSN = insn/insn.o insn/inat.o
+endif
+
 
 all: $(TARGETS)
 
@@ -17,7 +23,7 @@ all: $(TARGETS)
 	$(CC) -MMD -MP $(CFLAGS) -c -o $@ $<
 
 create-diff-object: create-diff-object.o kpatch-elf.o \
-					lookup.o insn/insn.o insn/inat.o
+					lookup.o $(INSN)
 create-klp-module: create-klp-module.o kpatch-elf.o
 create-kpatch-module: create-kpatch-module.o kpatch-elf.o
 
diff --git a/kpatch-build/create-diff-object.c b/kpatch-build/create-diff-object.c
index e2cb94b..ae3f370 100644
--- a/kpatch-build/create-diff-object.c
+++ b/kpatch-build/create-diff-object.c
@@ -225,6 +225,7 @@ out:
 		log_debug("section %s has changed\n", sec->name);
 }
 
+#ifdef __x86_64__
 /*
  * Determine if a section has changed only due to a WARN* or might_sleep
  * macro call's embedding of the line number into an instruction operand.
@@ -330,6 +331,12 @@ static int kpatch_line_macro_change_only(struct section *sec)
 
 	return 1;
 }
+#else
+static int kpatch_line_macro_change_only(struct section *sec)
+{
+	return 0;
+}
+#endif
 
 static void kpatch_compare_sections(struct list_head *seclist)
 {
@@ -868,6 +875,7 @@ static void kpatch_compare_correlated_elements(struct kpatch_elf *kelf)
 	kpatch_compare_symbols(&kelf->symbols);
 }
 
+#ifdef __x86_64__
 static void rela_insn(struct section *sec, struct rela *rela, struct insn *insn)
 {
 	unsigned long insn_addr, start, end, rela_addr;
@@ -886,6 +894,9 @@ static void rela_insn(struct section *sec, struct rela *rela, struct insn *insn)
 			return;
 	}
 }
+#else
+static void rela_insn(struct section *sec, struct rela *rela, struct insn *insn) { }
+#endif
 
 /*
  * Mangle the relas a little.  The compiler will sometimes use section symbols