x86/msr-index: Cleanup bit defines

[mirror_ubuntu-bionic-kernel.git] / Makefile

diff --git a/Makefile b/Makefile
index bf5b8cbb9469db3ab4a42e636746cab82a093044..1a0560357a7ee03c53d09f0cb93aa4e2581d867e 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -1,8 +1,8 @@
 # SPDX-License-Identifier: GPL-2.0
 VERSION = 4
 PATCHLEVEL = 15
-SUBLEVEL = 0
-EXTRAVERSION = -rc8
+SUBLEVEL = 18
+EXTRAVERSION =
 NAME = Fearless Coyote
 
 # *DOCUMENTATION*
@@ -176,6 +176,20 @@ ifndef KBUILD_CHECKSRC
   KBUILD_CHECKSRC = 0
 endif
 
+# Call message checker as part of the C compilation
+#
+# Use 'make D=1' to enable checking
+# Use 'make D=2' to create the message catalog
+
+ifdef D
+  ifeq ("$(origin D)", "command line")
+    KBUILD_KMSG_CHECK = $(D)
+  endif
+endif
+ifndef KBUILD_KMSG_CHECK
+  KBUILD_KMSG_CHECK = 0
+endif
+
 # Use make M=dir to specify directory of external module to build
 # Old syntax make ... SUBDIRS=$PWD is still supported
 # Setting the environment variable KBUILD_EXTMOD take precedence
@@ -387,6 +401,7 @@ CHECK               = sparse
 
 CHECKFLAGS     := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \
                  -Wbitwise -Wno-return-void $(CF)
+KMSG_CHECK     = $(srctree)/scripts/kmsg-doc
 NOSTDINC_FLAGS  =
 CFLAGS_MODULE   =
 AFLAGS_MODULE   =
@@ -395,6 +410,13 @@ CFLAGS_KERNEL      =
 AFLAGS_KERNEL  =
 LDFLAGS_vmlinux =
 
+# Prefer linux-backports-modules
+ifneq ($(KBUILD_SRC),)
+ifneq ($(shell if test -e $(KBUILD_OUTPUT)/ubuntu-build; then echo yes; fi),yes)
+UBUNTUINCLUDE := -I/usr/src/linux-headers-lbm-$(KERNELRELEASE)
+endif
+endif
+
 # Use USERINCLUDE when you must reference the UAPI directories only.
 USERINCLUDE    := \
                -I$(srctree)/arch/$(SRCARCH)/include/uapi \
@@ -406,12 +428,16 @@ USERINCLUDE    := \
 # Use LINUXINCLUDE when you must reference the include/ directory.
 # Needed to be compatible with the O= option
 LINUXINCLUDE    := \
+               $(UBUNTUINCLUDE) \
                -I$(srctree)/arch/$(SRCARCH)/include \
                -I$(objtree)/arch/$(SRCARCH)/include/generated \
                $(if $(KBUILD_SRC), -I$(srctree)/include) \
                -I$(objtree)/include \
                $(USERINCLUDE)
 
+# UBUNTU: Include our third party driver stuff too
+LINUXINCLUDE   += -Iubuntu/include $(if $(KBUILD_SRC),-I$(srctree)/ubuntu/include)
+
 KBUILD_AFLAGS   := -D__ASSEMBLY__
 KBUILD_CFLAGS   := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
                   -fno-strict-aliasing -fno-common -fshort-wchar \
@@ -432,8 +458,10 @@ export MAKE AWK GENKSYMS INSTALLKERNEL PERL PYTHON UTS_MACHINE
 export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS
 
 export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS
-export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE CFLAGS_KASAN CFLAGS_UBSAN
+export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE
+export CFLAGS_KASAN CFLAGS_KASAN_NOSANITIZE CFLAGS_UBSAN
 export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE
+export KBUILD_KMSG_CHECK KMSG_CHECK
 export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODULE KBUILD_LDFLAGS_MODULE
 export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERNEL
 export KBUILD_ARFLAGS
@@ -486,6 +514,11 @@ KBUILD_CFLAGS += $(CLANG_TARGET) $(CLANG_GCC_TC)
 KBUILD_AFLAGS += $(CLANG_TARGET) $(CLANG_GCC_TC)
 endif
 
+RETPOLINE_CFLAGS_GCC := -mindirect-branch=thunk-extern -mindirect-branch-register
+RETPOLINE_CFLAGS_CLANG := -mretpoline-external-thunk
+RETPOLINE_CFLAGS := $(call cc-option,$(RETPOLINE_CFLAGS_GCC),$(call cc-option,$(RETPOLINE_CFLAGS_CLANG)))
+export RETPOLINE_CFLAGS
+
 ifeq ($(config-targets),1)
 # ===========================================================================
 # *config targets only - make sure prerequisites are updated, and descend
@@ -557,7 +590,7 @@ scripts: scripts_basic include/config/auto.conf include/config/tristate.conf \
 
 # Objects we will link into vmlinux / subdirs we need to visit
 init-y         := init/
-drivers-y      := drivers/ sound/ firmware/
+drivers-y      := drivers/ sound/ firmware/ ubuntu/
 net-y          := net/
 libs-y         := lib/
 core-y         := usr/
@@ -633,6 +666,7 @@ KBUILD_CFLAGS       += $(call cc-disable-warning,frame-address,)
 KBUILD_CFLAGS  += $(call cc-disable-warning, format-truncation)
 KBUILD_CFLAGS  += $(call cc-disable-warning, format-overflow)
 KBUILD_CFLAGS  += $(call cc-disable-warning, int-in-bool-context)
+KBUILD_CFLAGS  += $(call cc-disable-warning, attribute-alias)
 
 ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
 KBUILD_CFLAGS  += $(call cc-option,-Oz,-Os)
@@ -698,7 +732,6 @@ KBUILD_CFLAGS += $(stackp-flag)
 
 ifeq ($(cc-name),clang)
 KBUILD_CPPFLAGS += $(call cc-option,-Qunused-arguments,)
-KBUILD_CFLAGS += $(call cc-disable-warning, unused-variable)
 KBUILD_CFLAGS += $(call cc-disable-warning, format-invalid-specifier)
 KBUILD_CFLAGS += $(call cc-disable-warning, gnu)
 KBUILD_CFLAGS += $(call cc-disable-warning, address-of-packed-member)
@@ -716,9 +749,9 @@ else
 # These warnings generated too much noise in a regular build.
 # Use make W=1 to enable them (see scripts/Makefile.extrawarn)
 KBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable)
-KBUILD_CFLAGS += $(call cc-disable-warning, unused-const-variable)
 endif
 
+KBUILD_CFLAGS += $(call cc-disable-warning, unused-const-variable)
 ifdef CONFIG_FRAME_POINTER
 KBUILD_CFLAGS  += -fno-omit-frame-pointer -fno-optimize-sibling-calls
 else
@@ -792,6 +825,15 @@ KBUILD_CFLAGS += $(call cc-disable-warning, pointer-sign)
 # disable invalid "can't wrap" optimizations for signed / pointers
 KBUILD_CFLAGS  += $(call cc-option,-fno-strict-overflow)
 
+# clang sets -fmerge-all-constants by default as optimization, but this
+# is non-conforming behavior for C and in fact breaks the kernel, so we
+# need to disable it here generally.
+KBUILD_CFLAGS  += $(call cc-option,-fno-merge-all-constants)
+
+# for gcc -fno-merge-all-constants disables everything, but it is fine
+# to have actual conforming behavior enabled.
+KBUILD_CFLAGS  += $(call cc-option,-fmerge-constants)
+
 # Make sure -fstack-check isn't enabled (like gentoo apparently did)
 KBUILD_CFLAGS  += $(call cc-option,-fno-stack-check,)
 
@@ -1165,6 +1207,7 @@ headers_install: __headers
          $(error Headers not exportable for the $(SRCARCH) architecture))
        $(Q)$(MAKE) $(hdr-inst)=include/uapi dst=include
        $(Q)$(MAKE) $(hdr-inst)=arch/$(SRCARCH)/include/uapi $(hdr-dst)
+       $(Q)$(MAKE) $(hdr-inst)=ubuntu/include dst=include oldheaders=
 
 PHONY += headers_check_all
 headers_check_all: headers_install_all
@@ -1174,6 +1217,7 @@ PHONY += headers_check
 headers_check: headers_install
        $(Q)$(MAKE) $(hdr-inst)=include/uapi dst=include HDRCHECK=1
        $(Q)$(MAKE) $(hdr-inst)=arch/$(SRCARCH)/include/uapi $(hdr-dst) HDRCHECK=1
+       $(Q)$(MAKE) $(hdr-inst)=ubuntu/include dst=include oldheaders= HDRCHECK=1
 
 # ---------------------------------------------------------------------------
 # Kernel selftest