Merge branch 'x86/build' into x86/asm, to pick up completed topic branch

Signed-off-by: Ingo Molnar <mingo@kernel.org>

arch/alpha/kernel/vmlinux.lds.S

 /* SPDX-License-Identifier: GPL-2.0 */
+
+#define EMITS_PT_NOTE
+#define RO_EXCEPTION_TABLE_ALIGN	16
+
 #include <asm-generic/vmlinux.lds.h>
 #include <asm/thread_info.h>
 #include <asm/cache.h>
@@ -8,7 +12,7 @@
 OUTPUT_FORMAT("elf64-alpha")
 OUTPUT_ARCH(alpha)
 ENTRY(__start)
-PHDRS { kernel PT_LOAD; note PT_NOTE; }
+PHDRS { text PT_LOAD; note PT_NOTE; }
 jiffies = jiffies_64;
 SECTIONS
 {
@@ -27,17 +31,11 @@ SECTIONS
 		LOCK_TEXT
 		*(.fixup)
 		*(.gnu.warning)
-	} :kernel
+	} :text
 	swapper_pg_dir = SWAPPER_PGD;
 	_etext = .;	/* End of text section */
 
-	NOTES :kernel :note
-	.dummy : {
-		*(.dummy)
-	} :kernel
-
-	RODATA
-	EXCEPTION_TABLE(16)
+	RO_DATA(4096)
 
 	/* Will be freed after init */
 	__init_begin = ALIGN(PAGE_SIZE);
@@ -52,7 +50,7 @@ SECTIONS
 
 	_sdata = .;	/* Start of rw data section */
 	_data = .;
-	RW_DATA_SECTION(L1_CACHE_BYTES, PAGE_SIZE, THREAD_SIZE)
+	RW_DATA(L1_CACHE_BYTES, PAGE_SIZE, THREAD_SIZE)
 
 	.got : {
 		*(.got)

arch/arc/kernel/vmlinux.lds.S

@@ -95,13 +95,13 @@ SECTIONS
 	_etext = .;
 
 	_sdata = .;
-	RO_DATA_SECTION(PAGE_SIZE)
+	RO_DATA(PAGE_SIZE)
 
 	/*
 	 * 1. this is .data essentially
 	 * 2. THREAD_SIZE for init.task, must be kernel-stk sz aligned
 	 */
-	RW_DATA_SECTION(L1_CACHE_BYTES, PAGE_SIZE, THREAD_SIZE)
+	RW_DATA(L1_CACHE_BYTES, PAGE_SIZE, THREAD_SIZE)
 
 	_edata = .;
 
@@ -118,8 +118,6 @@ SECTIONS
 	/DISCARD/ : {	*(.eh_frame) }
 #endif
 
-	NOTES
-
 	. = ALIGN(PAGE_SIZE);
 	_end = . ;
 

arch/arm/kernel/vmlinux-xip.lds.S

@@ -70,8 +70,6 @@ SECTIONS
 	ARM_UNWIND_SECTIONS
 #endif
 
-	NOTES
-
 	_etext = .;			/* End of text and rodata section */
 
 	ARM_VECTORS
@@ -114,7 +112,7 @@ SECTIONS
 
 	. = ALIGN(THREAD_SIZE);
 	_sdata = .;
-	RW_DATA_SECTION(L1_CACHE_BYTES, PAGE_SIZE, THREAD_SIZE)
+	RW_DATA(L1_CACHE_BYTES, PAGE_SIZE, THREAD_SIZE)
 	.data.ro_after_init : AT(ADDR(.data.ro_after_init) - LOAD_OFFSET) {
 		*(.data..ro_after_init)
 	}

arch/arm/kernel/vmlinux.lds.S

@@ -81,8 +81,6 @@ SECTIONS
 	ARM_UNWIND_SECTIONS
 #endif
 
-	NOTES
-
 #ifdef CONFIG_STRICT_KERNEL_RWX
 	. = ALIGN(1<<SECTION_SHIFT);
 #else
@@ -143,7 +141,7 @@ SECTIONS
 	__init_end = .;
 
 	_sdata = .;
-	RW_DATA_SECTION(L1_CACHE_BYTES, PAGE_SIZE, THREAD_SIZE)
+	RW_DATA(L1_CACHE_BYTES, PAGE_SIZE, THREAD_SIZE)
 	_edata = .;
 
 	BSS_SECTION(0, 0, 0)

arch/arm64/kernel/vmlinux.lds.S

@@ -5,6 +5,8 @@
  * Written by Martin Mares <mj@atrey.karlin.mff.cuni.cz>
  */
 
+#define RO_EXCEPTION_TABLE_ALIGN	8
+
 #include <asm-generic/vmlinux.lds.h>
 #include <asm/cache.h>
 #include <asm/kernel-pgtable.h>
@@ -135,11 +137,9 @@ SECTIONS
 	. = ALIGN(SEGMENT_ALIGN);
 	_etext = .;			/* End of text section */
 
-	RO_DATA(PAGE_SIZE)		/* everything from this point to     */
-	EXCEPTION_TABLE(8)		/* __init_begin will be marked RO NX */
-	NOTES
+	/* everything from this point to __init_begin will be marked RO NX */
+	RO_DATA(PAGE_SIZE)
 
-	. = ALIGN(PAGE_SIZE);
 	idmap_pg_dir = .;
 	. += IDMAP_DIR_SIZE;
 
@@ -215,7 +215,7 @@ SECTIONS
 
 	_data = .;
 	_sdata = .;
-	RW_DATA_SECTION(L1_CACHE_BYTES, PAGE_SIZE, THREAD_ALIGN)
+	RW_DATA(L1_CACHE_BYTES, PAGE_SIZE, THREAD_ALIGN)
 
 	/*
 	 * Data written with the MMU off but read with the MMU on requires

arch/c6x/kernel/vmlinux.lds.S

@@ -5,6 +5,9 @@
  *  Copyright (C) 2010, 2011 Texas Instruments Incorporated
  *  Mark Salter <msalter@redhat.com>
  */
+
+#define RO_EXCEPTION_TABLE_ALIGN	16
+
 #include <asm-generic/vmlinux.lds.h>
 #include <asm/thread_info.h>
 #include <asm/page.h>
@@ -80,10 +83,7 @@ SECTIONS
 		*(.gnu.warning)
 	}
 
-	EXCEPTION_TABLE(16)
-	NOTES
-
-	RO_DATA_SECTION(PAGE_SIZE)
+	RO_DATA(PAGE_SIZE)
 	.const :
 	{
 		*(.const .const.* .gnu.linkonce.r.*)

arch/csky/kernel/vmlinux.lds.S

@@ -49,11 +49,10 @@ SECTIONS
 
 
 	_sdata = .;
-	RO_DATA_SECTION(PAGE_SIZE)
-	RW_DATA_SECTION(L1_CACHE_BYTES, PAGE_SIZE, THREAD_SIZE)
+	RO_DATA(PAGE_SIZE)
+	RW_DATA(L1_CACHE_BYTES, PAGE_SIZE, THREAD_SIZE)
 	_edata = .;
 
-	NOTES
 	EXCEPTION_TABLE(L1_CACHE_BYTES)
 	BSS_SECTION(L1_CACHE_BYTES, PAGE_SIZE, L1_CACHE_BYTES)
 	VBR_BASE

arch/h8300/kernel/vmlinux.lds.S

 /* SPDX-License-Identifier: GPL-2.0 */
+
+#define RO_EXCEPTION_TABLE_ALIGN	16
+
 #include <asm-generic/vmlinux.lds.h>
 #include <asm/page.h>
 #include <asm/thread_info.h>
@@ -37,9 +40,7 @@ SECTIONS
 #endif
 	_etext = . ;
 	}
-	EXCEPTION_TABLE(16)
-	NOTES
-	RO_DATA_SECTION(4)
+	RO_DATA(4)
 	ROMEND = .;
 #if defined(CONFIG_ROMKERNEL)
 	. = RAMTOP;
@@ -48,7 +49,7 @@ SECTIONS
 #endif
 	_sdata = . ;
 	__data_start = . ;
-	RW_DATA_SECTION(0, PAGE_SIZE, THREAD_SIZE)
+	RW_DATA(0, PAGE_SIZE, THREAD_SIZE)
 #if defined(CONFIG_ROMKERNEL)
 #undef ADDR
 #endif

arch/hexagon/kernel/vmlinux.lds.S

@@ -49,12 +49,11 @@ SECTIONS
 	INIT_DATA_SECTION(PAGE_SIZE)
 
 	_sdata = .;
-		RW_DATA_SECTION(32,PAGE_SIZE,_THREAD_SIZE)
-		RO_DATA_SECTION(PAGE_SIZE)
+		RW_DATA(32,PAGE_SIZE,_THREAD_SIZE)
+		RO_DATA(PAGE_SIZE)
 	_edata = .;
 
 	EXCEPTION_TABLE(16)
-	NOTES
 
 	BSS_SECTION(_PAGE_SIZE, _PAGE_SIZE, _PAGE_SIZE)
 

arch/ia64/kernel/vmlinux.lds.S

@@ -5,6 +5,9 @@
 #include <asm/pgtable.h>
 #include <asm/thread_info.h>
 
+#define EMITS_PT_NOTE
+#define RO_EXCEPTION_TABLE_ALIGN	16
+
 #include <asm-generic/vmlinux.lds.h>
 
 OUTPUT_FORMAT("elf64-ia64-little")
@@ -13,7 +16,7 @@ ENTRY(phys_start)
 jiffies = jiffies_64;
 
 PHDRS {
-	code   PT_LOAD;
+	text   PT_LOAD;
 	percpu PT_LOAD;
 	data   PT_LOAD;
 	note   PT_NOTE;
@@ -36,7 +39,7 @@ SECTIONS {
 	phys_start = _start - LOAD_OFFSET;
 
 	code : {
-	} :code
+	} :text
 	. = KERNEL_START;
 
 	_text = .;
@@ -68,11 +71,6 @@ SECTIONS {
 	/*
 	 * Read-only data
 	 */
-	NOTES :code :note       /* put .notes in text and mark in PT_NOTE  */
-	code_continues : {
-	} : code               /* switch back to regular program...  */
-
-	EXCEPTION_TABLE(16)
 
 	/* MCA table */
 	. = ALIGN(16);
@@ -102,11 +100,11 @@ SECTIONS {
 		__start_unwind = .;
 		*(.IA_64.unwind*)
 		__end_unwind = .;
-	} :code :unwind
+	} :text :unwind
 	code_continues2 : {
-	} : code
+	} :text
 
-	RODATA
+	RO_DATA(4096)
 
 	.opd : AT(ADDR(.opd) - LOAD_OFFSET) {
 		__start_opd = .;
@@ -214,7 +212,7 @@ SECTIONS {
 	_end = .;
 
 	code : {
-	} :code
+	} :text
 
 	STABS_DEBUG
 	DWARF_DEBUG

arch/m68k/kernel/vmlinux-nommu.lds

@@ -60,8 +60,8 @@ SECTIONS {
 #endif
 
 	_sdata = .;
-	RO_DATA_SECTION(PAGE_SIZE)
-	RW_DATA_SECTION(16, PAGE_SIZE, THREAD_SIZE)
+	RO_DATA(PAGE_SIZE)
+	RW_DATA(16, PAGE_SIZE, THREAD_SIZE)
 	_edata = .;
 
 	EXCEPTION_TABLE(16)

arch/m68k/kernel/vmlinux-std.lds

@@ -31,9 +31,9 @@ SECTIONS
 
   _sdata = .;			/* Start of data section */
 
-  RODATA
+  RO_DATA(4096)
 
-  RW_DATA_SECTION(16, PAGE_SIZE, THREAD_SIZE)
+  RW_DATA(16, PAGE_SIZE, THREAD_SIZE)
 
   BSS_SECTION(0, 0, 0)
 

arch/m68k/kernel/vmlinux-sun3.lds

@@ -24,13 +24,13 @@ SECTIONS
 	*(.fixup)
 	*(.gnu.warning)
 	} :text = 0x4e75
-	RODATA
+	RO_DATA(4096)
 
   _etext = .;			/* End of text section */
 
   EXCEPTION_TABLE(16) :data
   _sdata = .;			/* Start of rw data section */
-  RW_DATA_SECTION(16, PAGE_SIZE, THREAD_SIZE) :data
+  RW_DATA(16, PAGE_SIZE, THREAD_SIZE) :data
   /* End of data goes *here* so that freeing init code works properly. */
   _edata = .;
   NOTES

arch/microblaze/kernel/vmlinux.lds.S

@@ -11,6 +11,8 @@
 OUTPUT_ARCH(microblaze)
 ENTRY(microblaze_start)
 
+#define RO_EXCEPTION_TABLE_ALIGN	16
+
 #include <asm/page.h>
 #include <asm-generic/vmlinux.lds.h>
 #include <asm/thread_info.h>
@@ -51,9 +53,7 @@ SECTIONS {
 	}
 
 	. = ALIGN(16);
-	RODATA
-	EXCEPTION_TABLE(16)
-	NOTES
+	RO_DATA(4096)
 
 	/*
 	 * sdata2 section can go anywhere, but must be word aligned
@@ -70,7 +70,7 @@ SECTIONS {
 	}
 
 	_sdata = . ;
-	RW_DATA_SECTION(32, PAGE_SIZE, THREAD_SIZE)
+	RW_DATA(32, PAGE_SIZE, THREAD_SIZE)
 	_edata = . ;
 
 	/* Under the microblaze ABI, .sdata and .sbss must be contiguous */

arch/mips/kernel/vmlinux.lds.S

@@ -10,6 +10,11 @@
  */
 #define BSS_FIRST_SECTIONS *(.bss..swapper_pg_dir)
 
+/* Cavium Octeon should not have a separate PT_NOTE Program Header. */
+#ifndef CONFIG_CAVIUM_OCTEON_SOC
+#define EMITS_PT_NOTE
+#endif
+
 #include <asm-generic/vmlinux.lds.h>
 
 #undef mips
@@ -76,16 +81,8 @@ SECTIONS
 		__stop___dbe_table = .;
 	}
 
-#ifdef CONFIG_CAVIUM_OCTEON_SOC
-#define NOTES_HEADER
-#else /* CONFIG_CAVIUM_OCTEON_SOC */
-#define NOTES_HEADER :note
-#endif /* CONFIG_CAVIUM_OCTEON_SOC */
-	NOTES :text NOTES_HEADER
-	.dummy : { *(.dummy) } :text
-
 	_sdata = .;			/* Start of data section */
-	RODATA
+	RO_DATA(4096)
 
 	/* writeable */
 	.data : {	/* Data */

arch/nds32/kernel/vmlinux.lds.S

@@ -53,12 +53,11 @@ SECTIONS
 	_etext = .;			/* End of text and rodata section */
 
 	_sdata = .;
-	RO_DATA_SECTION(PAGE_SIZE)
-	RW_DATA_SECTION(L1_CACHE_BYTES, PAGE_SIZE, THREAD_SIZE)
+	RO_DATA(PAGE_SIZE)
+	RW_DATA(L1_CACHE_BYTES, PAGE_SIZE, THREAD_SIZE)
 	_edata  =  .;
 
 	EXCEPTION_TABLE(16)
-	NOTES
 	BSS_SECTION(4, 4, 4)
 	_end = .;
 

arch/nios2/kernel/vmlinux.lds.S

@@ -49,8 +49,8 @@ SECTIONS
 	__init_end = .;
 
 	_sdata = .;
-	RO_DATA_SECTION(PAGE_SIZE)
-	RW_DATA_SECTION(L1_CACHE_BYTES, PAGE_SIZE, THREAD_SIZE)
+	RO_DATA(PAGE_SIZE)
+	RW_DATA(L1_CACHE_BYTES, PAGE_SIZE, THREAD_SIZE)
 	_edata = .;
 
 	BSS_SECTION(0, 0, 0)
@@ -58,7 +58,6 @@ SECTIONS
 
 	STABS_DEBUG
 	DWARF_DEBUG
-	NOTES
 
 	DISCARDS
 }

arch/openrisc/kernel/vmlinux.lds.S

@@ -67,19 +67,18 @@ SECTIONS
 
 	_sdata = .;
 
-	/* Page alignment required for RO_DATA_SECTION */
-	RO_DATA_SECTION(PAGE_SIZE)
+	/* Page alignment required for RO_DATA */
+	RO_DATA(PAGE_SIZE)
 	_e_kernel_ro = .;
 
 	/* Whatever comes after _e_kernel_ro had better be page-aligend, too */
 
 	/* 32 here is cacheline size... recheck this */
-	RW_DATA_SECTION(32, PAGE_SIZE, PAGE_SIZE)
+	RW_DATA(32, PAGE_SIZE, PAGE_SIZE)
 
         _edata  =  .;
 
 	EXCEPTION_TABLE(4)
-	NOTES
 
 	/* Init code and data */
 	. = ALIGN(PAGE_SIZE);

arch/parisc/kernel/vmlinux.lds.S

@@ -19,6 +19,7 @@
 				*(.data..vm0.pte)
 
 #define CC_USING_PATCHABLE_FUNCTION_ENTRY
+#define RO_EXCEPTION_TABLE_ALIGN	8
 
 #include <asm-generic/vmlinux.lds.h>
 
@@ -109,7 +110,7 @@ SECTIONS
 	_sdata = .;
 
 	/* Architecturally we need to keep __gp below 0x1000000 and thus
-	 * in front of RO_DATA_SECTION() which stores lots of tracepoint
+	 * in front of RO_DATA() which stores lots of tracepoint
 	 * and ftrace symbols. */
 #ifdef CONFIG_64BIT
 	. = ALIGN(16);
@@ -127,11 +128,7 @@ SECTIONS
 	}
 #endif
 
-	RO_DATA_SECTION(8)
-
-	/* RO because of BUILDTIME_EXTABLE_SORT */
-	EXCEPTION_TABLE(8)
-	NOTES
+	RO_DATA(8)
 
 	/* unwind info */
 	.PARISC.unwind : {
@@ -149,7 +146,7 @@ SECTIONS
 	data_start = .;
 
 	/* Data */
-	RW_DATA_SECTION(L1_CACHE_BYTES, PAGE_SIZE, PAGE_SIZE)
+	RW_DATA(L1_CACHE_BYTES, PAGE_SIZE, PAGE_SIZE)
 
 	/* PA-RISC locks requires 16-byte alignment */
 	. = ALIGN(16);

arch/powerpc/kernel/vmlinux.lds.S

@@ -6,6 +6,8 @@
 #endif
 
 #define BSS_FIRST_SECTIONS *(.bss.prominit)
+#define EMITS_PT_NOTE
+#define RO_EXCEPTION_TABLE_ALIGN	0
 
 #include <asm/page.h>
 #include <asm-generic/vmlinux.lds.h>
@@ -18,22 +20,8 @@
 ENTRY(_stext)
 
 PHDRS {
-	kernel PT_LOAD FLAGS(7); /* RWX */
-	notes PT_NOTE FLAGS(0);
-	dummy PT_NOTE FLAGS(0);
-
-	/* binutils < 2.18 has a bug that makes it misbehave when taking an
-	   ELF file with all segments at load address 0 as input.  This
-	   happens when running "strip" on vmlinux, because of the AT() magic
-	   in this linker script.  People using GCC >= 4.2 won't run into
-	   this problem, because the "build-id" support will put some data
-	   into the "notes" segment (at a non-zero load address).
-
-	   To work around this, we force some data into both the "dummy"
-	   segment and the kernel segment, so the dummy segment will get a
-	   non-zero load address.  It's not enough to always create the
-	   "notes" segment, since if nothing gets assigned to it, its load
-	   address will be zero.  */
+	text PT_LOAD FLAGS(7); /* RWX */
+	note PT_NOTE FLAGS(0);
 }
 
 #ifdef CONFIG_PPC64
@@ -77,7 +65,7 @@ SECTIONS
 #else /* !CONFIG_PPC64 */
 		HEAD_TEXT
 #endif
-	} :kernel
+	} :text
 
 	__head_end = .;
 
@@ -126,7 +114,7 @@ SECTIONS
 		__got2_end = .;
 #endif /* CONFIG_PPC32 */
 
-	} :kernel
+	} :text
 
 	. = ALIGN(ETEXT_ALIGN_SIZE);
 	_etext = .;
@@ -175,17 +163,6 @@ SECTIONS
 		__stop__btb_flush_fixup = .;
 	}
 #endif
-	EXCEPTION_TABLE(0)
-
-	NOTES :kernel :notes
-
-	/* The dummy segment contents for the bug workaround mentioned above
-	   near PHDRS.  */
-	.dummy : AT(ADDR(.dummy) - LOAD_OFFSET) {
-		LONG(0)
-		LONG(0)
-		LONG(0)
-	} :kernel :dummy
 
 /*
  * Init sections discarded at runtime
@@ -200,7 +177,7 @@ SECTIONS
 #ifdef CONFIG_PPC64
 		*(.tramp.ftrace.init);
 #endif
-	} :kernel
+	} :text
 
 	/* .exit.text is discarded at runtime, not link time,
 	 * to deal with references from __bug_table