x86/msr: Add definitions for new speculation control MSRs

[mirror_ubuntu-artful-kernel.git] / scripts / Makefile.build

diff --git a/scripts/Makefile.build b/scripts/Makefile.build
index 4a9a2cec0a1b52d601f9f057eb8fbb515e69de50..d74c3f9f1fa89bacff3037b988713c2895a9c57b 100644 (file)
--- a/scripts/Makefile.build
+++ b/scripts/Makefile.build
@@ -229,8 +229,8 @@ ifeq ("$(origin RECORDMCOUNT_WARN)", "command line")
 endif
 # Due to recursion, we must skip empty.o.
 # The empty.o file is created in the make process in order to determine
-#  the target endianness and word size. It is made before all other C
-#  files, including recordmcount.
+# the target endianness and word size. It is made before all other C
+# files, including recordmcount.
 sub_cmd_record_mcount =                                        \
        if [ $(@) != "scripts/mod/empty.o" ]; then      \
                $(objtree)/scripts/recordmcount $(RECORDMCOUNT_FLAGS) "$(@)";   \
@@ -245,20 +245,21 @@ sub_cmd_record_mcount = set -e ; perl $(srctree)/scripts/recordmcount.pl "$(ARCH
        "$(LD)" "$(NM)" "$(RM)" "$(MV)" \
        "$(if $(part-of-module),1,0)" "$(@)";
 recordmcount_source := $(srctree)/scripts/recordmcount.pl
-endif
+endif # BUILD_C_RECORDMCOUNT
 cmd_record_mcount =                                            \
        if [ "$(findstring $(CC_FLAGS_FTRACE),$(_c_flags))" =   \
             "$(CC_FLAGS_FTRACE)" ]; then                       \
                $(sub_cmd_record_mcount)                        \
        fi;
-endif
+endif # CONFIG_FTRACE_MCOUNT_RECORD
 
 ifdef CONFIG_STACK_VALIDATION
 ifneq ($(SKIP_STACK_VALIDATION),1)
 
 __objtool_obj := $(objtree)/tools/objtool/objtool
 
-objtool_args = check
+objtool_args = $(if $(CONFIG_UNWINDER_ORC),orc generate,check)
+
 ifndef CONFIG_FRAME_POINTER
 objtool_args += --no-fp
 endif
@@ -276,11 +277,23 @@ objtool_obj = $(if $(patsubst y%,, \
 endif # SKIP_STACK_VALIDATION
 endif # CONFIG_STACK_VALIDATION
 
+# Rebuild all objects when objtool changes, or is enabled/disabled.
+objtool_dep = $(objtool_obj)                                   \
+             $(wildcard include/config/orc/unwinder.h          \
+                        include/config/stack/validation.h)
+
+ifdef CONFIG_RETPOLINE
+cmd_ubuntu_retpoline = $(CONFIG_SHELL) $(srctree)/scripts/ubuntu-retpoline-extract-one $(@) $(<) "$(filter -m16 %code16gcc.h,$(a_flags))";
+else
+cmd_ubuntu_retpoline =
+endif
+
 define rule_cc_o_c
        $(call echo-cmd,checksrc) $(cmd_checksrc)                         \
        $(call cmd_and_fixdep,cc_o_c)                                     \
        $(cmd_modversions_c)                                              \
        $(call echo-cmd,objtool) $(cmd_objtool)                           \
+       $(call echo-cmd,ubuntu-retpoline) $(cmd_ubuntu_retpoline)         \
        $(call echo-cmd,record_mcount) $(cmd_record_mcount)
 endef
 
@@ -288,6 +301,7 @@ define rule_as_o_S
        $(call cmd_and_fixdep,as_o_S)                                     \
        $(cmd_modversions_S)                                              \
        $(call echo-cmd,objtool) $(cmd_objtool)
+       $(call echo-cmd,ubuntu-retpoline) $(cmd_ubuntu_retpoline)
 endef
 
 # List module undefined symbols (or empty line if not enabled)
@@ -298,14 +312,16 @@ cmd_undef_syms = echo
 endif
 
 # Built-in and composite module parts
-$(obj)/%.o: $(src)/%.c $(recordmcount_source) $(objtool_obj) FORCE
+$(obj)/%.o: $(src)/%.c $(recordmcount_source) $(objtool_dep) FORCE
        $(call cmd,force_checksrc)
+       $(call cmd,force_check_kmsg)
        $(call if_changed_rule,cc_o_c)
 
 # Single-part modules are special since we need to mark them in $(MODVERDIR)
 
-$(single-used-m): $(obj)/%.o: $(src)/%.c $(recordmcount_source) $(objtool_obj) FORCE
+$(single-used-m): $(obj)/%.o: $(src)/%.c $(recordmcount_source) $(objtool_dep) FORCE
        $(call cmd,force_checksrc)
+       $(call cmd,force_check_kmsg)
        $(call if_changed_rule,cc_o_c)
        @{ echo $(@:.o=.ko); echo $@; \
           $(cmd_undef_syms); } > $(MODVERDIR)/$(@F:.o=.mod)
@@ -399,7 +415,7 @@ cmd_modversions_S =                                                         \
 endif
 endif
 
-$(obj)/%.o: $(src)/%.S $(objtool_obj) FORCE
+$(obj)/%.o: $(src)/%.S $(objtool_dep) FORCE
        $(call if_changed_rule,as_o_S)
 
 targets += $(real-objs-y) $(real-objs-m) $(lib-y)
@@ -552,6 +568,18 @@ $(call multi_depend, $(multi-used-m), .o, -objs -y -m)
 
 targets += $(multi-used-y) $(multi-used-m)
 
+# kmsg check tool
+ifneq ($(KBUILD_KMSG_CHECK),0)
+  ifeq ($(KBUILD_KMSG_CHECK),2)
+    kmsg_cmd := print
+    quiet_cmd_force_check_kmsg = KMSG_PRINT $<
+    $(shell [ -d $(objtree)/man ] || mkdir -p $(objtree)/man)
+  else
+    kmsg_cmd := check
+    quiet_cmd_force_check_kmsg = KMSG_CHECK $<
+  endif
+  cmd_force_check_kmsg = $(KMSG_CHECK) $(kmsg_cmd) $(CC) $(c_flags) $< ;
+endif
 
 # Descending
 # ---------------------------------------------------------------------------