Merge tag 'x86_build_for_v5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 build updates from Borislav Petkov:

 - Remove cc-option checks which are old and already supported by the
   minimal compiler version the kernel uses and thus avoid the need to
   invoke the compiler unnecessarily.

 - Cleanups

* tag 'x86_build_for_v5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/build: Move the install rule to arch/x86/Makefile
  x86/build: Remove the left-over bzlilo target
  x86/tools/relocs: Mark die() with the printf function attr format
  x86/build: Remove stale cc-option checks

arch/x86/Makefile

@@ -31,8 +31,8 @@ REALMODE_CFLAGS	:= -m16 -g -Os -DDISABLE_BRANCH_PROFILING \
 
 REALMODE_CFLAGS += -ffreestanding
 REALMODE_CFLAGS += -fno-stack-protector
-REALMODE_CFLAGS += $(call __cc-option, $(CC), $(REALMODE_CFLAGS), -Wno-address-of-packed-member)
-REALMODE_CFLAGS += $(call __cc-option, $(CC), $(REALMODE_CFLAGS), $(cc_stack_align4))
+REALMODE_CFLAGS += -Wno-address-of-packed-member
+REALMODE_CFLAGS += $(cc_stack_align4)
 REALMODE_CFLAGS += $(CLANG_FLAGS)
 export REALMODE_CFLAGS
 
@@ -48,8 +48,7 @@ export BITS
 #
 #    https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53383
 #
-KBUILD_CFLAGS += -mno-sse -mno-mmx -mno-sse2 -mno-3dnow
-KBUILD_CFLAGS += $(call cc-option,-mno-avx,)
+KBUILD_CFLAGS += -mno-sse -mno-mmx -mno-sse2 -mno-3dnow -mno-avx
 
 # Intel CET isn't enabled in the kernel
 KBUILD_CFLAGS += $(call cc-option,-fcf-protection=none)
@@ -59,9 +58,8 @@ ifeq ($(CONFIG_X86_32),y)
         UTS_MACHINE := i386
         CHECKFLAGS += -D__i386__
 
-        biarch := $(call cc-option,-m32)
-        KBUILD_AFLAGS += $(biarch)
-        KBUILD_CFLAGS += $(biarch)
+        KBUILD_AFLAGS += -m32
+        KBUILD_CFLAGS += -m32
 
         KBUILD_CFLAGS += -msoft-float -mregparm=3 -freg-struct-return
 
@@ -72,7 +70,7 @@ ifeq ($(CONFIG_X86_32),y)
         # Align the stack to the register width instead of using the default
         # alignment of 16 bytes. This reduces stack usage and the number of
         # alignment instructions.
-        KBUILD_CFLAGS += $(call cc-option,$(cc_stack_align4))
+        KBUILD_CFLAGS += $(cc_stack_align4)
 
         # CPU-specific tuning. Anything which can be shared with UML should go here.
         include arch/x86/Makefile_32.cpu
@@ -93,7 +91,6 @@ else
         UTS_MACHINE := x86_64
         CHECKFLAGS += -D__x86_64__
 
-        biarch := -m64
         KBUILD_AFLAGS += -m64
         KBUILD_CFLAGS += -m64
 
@@ -104,7 +101,7 @@ else
         KBUILD_CFLAGS += $(call cc-option,-falign-loops=1)
 
         # Don't autogenerate traditional x87 instructions
-        KBUILD_CFLAGS += $(call cc-option,-mno-80387)
+        KBUILD_CFLAGS += -mno-80387
         KBUILD_CFLAGS += $(call cc-option,-mno-fp-ret-in-387)
 
         # By default gcc and clang use a stack alignment of 16 bytes for x86.
@@ -114,20 +111,17 @@ else
         # default alignment which keep the stack *mis*aligned.
         # Furthermore an alignment to the register width reduces stack usage
         # and the number of alignment instructions.
-        KBUILD_CFLAGS += $(call cc-option,$(cc_stack_align8))
+        KBUILD_CFLAGS += $(cc_stack_align8)
 
 	# Use -mskip-rax-setup if supported.
 	KBUILD_CFLAGS += $(call cc-option,-mskip-rax-setup)
 
         # FIXME - should be integrated in Makefile.cpu (Makefile_32.cpu)
-        cflags-$(CONFIG_MK8) += $(call cc-option,-march=k8)
-        cflags-$(CONFIG_MPSC) += $(call cc-option,-march=nocona)
-
-        cflags-$(CONFIG_MCORE2) += \
-                $(call cc-option,-march=core2,$(call cc-option,-mtune=generic))
-	cflags-$(CONFIG_MATOM) += $(call cc-option,-march=atom) \
-		$(call cc-option,-mtune=atom,$(call cc-option,-mtune=generic))
-        cflags-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mtune=generic)
+        cflags-$(CONFIG_MK8)		+= -march=k8
+        cflags-$(CONFIG_MPSC)		+= -march=nocona
+        cflags-$(CONFIG_MCORE2)		+= -march=core2
+        cflags-$(CONFIG_MATOM)		+= -march=atom
+        cflags-$(CONFIG_GENERIC_CPU)	+= -mtune=generic
         KBUILD_CFLAGS += $(cflags-y)
 
         KBUILD_CFLAGS += -mno-red-zone
@@ -158,18 +152,6 @@ export CONFIG_X86_X32_ABI
 ifdef CONFIG_FUNCTION_GRAPH_TRACER
   ifndef CONFIG_HAVE_FENTRY
 	ACCUMULATE_OUTGOING_ARGS := 1
-  else
-    ifeq ($(call cc-option-yn, -mfentry), n)
-	ACCUMULATE_OUTGOING_ARGS := 1
-
-	# GCC ignores '-maccumulate-outgoing-args' when used with '-Os'.
-	# If '-Os' is enabled, disable it and print a warning.
-        ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
-          undefine CONFIG_CC_OPTIMIZE_FOR_SIZE
-          $(warning Disabling CONFIG_CC_OPTIMIZE_FOR_SIZE.  Your compiler does not have -mfentry so you cannot optimize for size with CONFIG_FUNCTION_GRAPH_TRACER.)
-        endif
-
-    endif
   endif
 endif
 
@@ -193,7 +175,7 @@ ifdef CONFIG_RETPOLINE
   # only been fixed starting from gcc stable version 8.4.0 and
   # onwards, but not for older ones. See gcc bug #86952.
   ifndef CONFIG_CC_IS_CLANG
-    KBUILD_CFLAGS += $(call cc-option,-fno-jump-tables)
+    KBUILD_CFLAGS += -fno-jump-tables
   endif
 endif
 
@@ -275,9 +257,10 @@ endif
 $(BOOT_TARGETS): vmlinux
 	$(Q)$(MAKE) $(build)=$(boot) $@
 
-PHONY += install bzlilo
-install bzlilo:
-	$(Q)$(MAKE) $(build)=$(boot) $@
+PHONY += install
+install:
+	$(CONFIG_SHELL) $(srctree)/$(boot)/install.sh $(KERNELRELEASE) \
+		$(KBUILD_IMAGE) System.map "$(INSTALL_PATH)"
 
 PHONY += vdso_install
 vdso_install:

arch/x86/boot/Makefile

@@ -133,7 +133,7 @@ quiet_cmd_genimage = GENIMAGE $3
 cmd_genimage = $(BASH) $(srctree)/$(src)/genimage.sh $2 $3 $(obj)/bzImage \
 		$(obj)/mtools.conf '$(FDARGS)' $(FDINITRD)
 
-PHONY += bzdisk fdimage fdimage144 fdimage288 hdimage isoimage install
+PHONY += bzdisk fdimage fdimage144 fdimage288 hdimage isoimage
 
 # This requires write access to /dev/fd0
 # All images require syslinux to be installed; hdimage also requires
@@ -156,8 +156,3 @@ hdimage: $(imgdeps)
 isoimage: $(imgdeps)
 	$(call cmd,genimage,isoimage,$(obj)/image.iso)
 	@$(kecho) 'Kernel: $(obj)/image.iso is ready'
-
-install:
-	$(CONFIG_SHELL) $(srctree)/$(src)/install.sh \
-		$(KERNELRELEASE) $(obj)/bzImage \
-		System.map "$(INSTALL_PATH)"

arch/x86/tools/relocs.c

@@ -26,6 +26,9 @@ static struct relocs relocs32;
 #if ELF_BITS == 64
 static struct relocs relocs32neg;
 static struct relocs relocs64;
+#define FMT PRIu64
+#else
+#define FMT PRIu32
 #endif
 
 struct section {
@@ -389,7 +392,7 @@ static void read_ehdr(FILE *fp)
 		Elf_Shdr shdr;
 
 		if (fseek(fp, ehdr.e_shoff, SEEK_SET) < 0)
-			die("Seek to %d failed: %s\n", ehdr.e_shoff, strerror(errno));
+			die("Seek to %" FMT " failed: %s\n", ehdr.e_shoff, strerror(errno));
 
 		if (fread(&shdr, sizeof(shdr), 1, fp) != 1)
 			die("Cannot read initial ELF section header: %s\n", strerror(errno));
@@ -412,17 +415,17 @@ static void read_shdrs(FILE *fp)
 
 	secs = calloc(shnum, sizeof(struct section));
 	if (!secs) {
-		die("Unable to allocate %d section headers\n",
+		die("Unable to allocate %ld section headers\n",
 		    shnum);
 	}
 	if (fseek(fp, ehdr.e_shoff, SEEK_SET) < 0) {
-		die("Seek to %d failed: %s\n",
+		die("Seek to %" FMT " failed: %s\n",
 		    ehdr.e_shoff, strerror(errno));
 	}
 	for (i = 0; i < shnum; i++) {
 		struct section *sec = &secs[i];
 		if (fread(&shdr, sizeof(shdr), 1, fp) != 1)
-			die("Cannot read ELF section headers %d/%d: %s\n",
+			die("Cannot read ELF section headers %d/%ld: %s\n",
 			    i, shnum, strerror(errno));
 		sec->shdr.sh_name      = elf_word_to_cpu(shdr.sh_name);
 		sec->shdr.sh_type      = elf_word_to_cpu(shdr.sh_type);
@@ -450,11 +453,11 @@ static void read_strtabs(FILE *fp)
 		}
 		sec->strtab = malloc(sec->shdr.sh_size);
 		if (!sec->strtab) {
-			die("malloc of %d bytes for strtab failed\n",
+			die("malloc of %" FMT " bytes for strtab failed\n",
 			    sec->shdr.sh_size);
 		}
 		if (fseek(fp, sec->shdr.sh_offset, SEEK_SET) < 0) {
-			die("Seek to %d failed: %s\n",
+			die("Seek to %" FMT " failed: %s\n",
 			    sec->shdr.sh_offset, strerror(errno));
 		}
 		if (fread(sec->strtab, 1, sec->shdr.sh_size, fp)
@@ -475,11 +478,11 @@ static void read_symtabs(FILE *fp)
 		}
 		sec->symtab = malloc(sec->shdr.sh_size);
 		if (!sec->symtab) {
-			die("malloc of %d bytes for symtab failed\n",
+			die("malloc of %" FMT " bytes for symtab failed\n",
 			    sec->shdr.sh_size);
 		}
 		if (fseek(fp, sec->shdr.sh_offset, SEEK_SET) < 0) {
-			die("Seek to %d failed: %s\n",
+			die("Seek to %" FMT " failed: %s\n",
 			    sec->shdr.sh_offset, strerror(errno));
 		}
 		if (fread(sec->symtab, 1, sec->shdr.sh_size, fp)
@@ -508,11 +511,11 @@ static void read_relocs(FILE *fp)
 		}
 		sec->reltab = malloc(sec->shdr.sh_size);
 		if (!sec->reltab) {
-			die("malloc of %d bytes for relocs failed\n",
+			die("malloc of %" FMT " bytes for relocs failed\n",
 			    sec->shdr.sh_size);
 		}
 		if (fseek(fp, sec->shdr.sh_offset, SEEK_SET) < 0) {
-			die("Seek to %d failed: %s\n",
+			die("Seek to %" FMT " failed: %s\n",
 			    sec->shdr.sh_offset, strerror(errno));
 		}
 		if (fread(sec->reltab, 1, sec->shdr.sh_size, fp)

arch/x86/tools/relocs.h

@@ -17,6 +17,7 @@
 #include <regex.h>
 #include <tools/le_byteshift.h>
 
+__attribute__((__format__(printf, 1, 2)))
 void die(char *fmt, ...) __attribute__((noreturn));
 
 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))