1 files changed, 54 insertions, 93 deletions

diff --git a/arch/x86/kernel/vmlinux.lds.S b/arch/x86/kernel/vmlinux.lds.S
index 367e87882041..9fc178255c04 100644
--- a/arch/x86/kernel/vmlinux.lds.S
+++ b/arch/x86/kernel/vmlinux.lds.S
@@ -46,11 +46,10 @@ PHDRS {
         data PT_LOAD FLAGS(7);          /* RWE */
 #ifdef CONFIG_X86_64
         user PT_LOAD FLAGS(7);          /* RWE */
-        data.init PT_LOAD FLAGS(7);     /* RWE */
 #ifdef CONFIG_SMP
         percpu PT_LOAD FLAGS(7);        /* RWE */
 #endif
-        data.init2 PT_LOAD FLAGS(7);    /* RWE */
+        init PT_LOAD FLAGS(7);          /* RWE */
 #endif
         note PT_NOTE FLAGS(0);          /* ___ */
 }
@@ -103,72 +102,43 @@ SECTIONS
                 __stop___ex_table = .;
         } :text = 0x9090
 
-        RODATA
+        RO_DATA(PAGE_SIZE)
 
         /* Data */
-        . = ALIGN(PAGE_SIZE);
         .data : AT(ADDR(.data) - LOAD_OFFSET) {
                 /* Start of data section */
                 _sdata = .;
-                DATA_DATA
-                CONSTRUCTORS
 
-#ifdef CONFIG_X86_64
-                /* End of data section */
-                _edata = .;
-#endif
-        } :data
+                /* init_task */
+                INIT_TASK_DATA(THREAD_SIZE)
 
 #ifdef CONFIG_X86_32
-        /* 32 bit has nosave before _edata */
-        . = ALIGN(PAGE_SIZE);
-        .data_nosave : AT(ADDR(.data_nosave) - LOAD_OFFSET) {
-                __nosave_begin = .;
-                *(.data.nosave)
-                . = ALIGN(PAGE_SIZE);
-                __nosave_end = .;
-        }
+                /* 32 bit has nosave before _edata */
+                NOSAVE_DATA
 #endif
 
-        . = ALIGN(PAGE_SIZE);
-        .data.page_aligned : AT(ADDR(.data.page_aligned) - LOAD_OFFSET) {
-                *(.data.page_aligned)
+                PAGE_ALIGNED_DATA(PAGE_SIZE)
                 *(.data.idt)
-        }
 
-#ifdef CONFIG_X86_32
-        . = ALIGN(32);
-#else
-        . = ALIGN(PAGE_SIZE);
-        . = ALIGN(CONFIG_X86_L1_CACHE_BYTES);
-#endif
-        .data.cacheline_aligned :
-                AT(ADDR(.data.cacheline_aligned) - LOAD_OFFSET) {
-                *(.data.cacheline_aligned)
-        }
+                CACHELINE_ALIGNED_DATA(CONFIG_X86_L1_CACHE_BYTES)
 
-        /* rarely changed data like cpu maps */
-#ifdef CONFIG_X86_32
-        . = ALIGN(32);
-#else
-        . = ALIGN(CONFIG_X86_INTERNODE_CACHE_BYTES);
-#endif
-        .data.read_mostly : AT(ADDR(.data.read_mostly) - LOAD_OFFSET) {
-                *(.data.read_mostly)
+                DATA_DATA
+                CONSTRUCTORS
+
+                /* rarely changed data like cpu maps */
+                READ_MOSTLY_DATA(CONFIG_X86_INTERNODE_CACHE_BYTES)
 
-#ifdef CONFIG_X86_32
                 /* End of data section */
                 _edata = .;
-#endif
-        }
+        } :data
 
 #ifdef CONFIG_X86_64
 
 #define VSYSCALL_ADDR (-10*1024*1024)
-#define VSYSCALL_PHYS_ADDR ((LOADADDR(.data.read_mostly) + \
-                            SIZEOF(.data.read_mostly) + 4095) & ~(4095))
-#define VSYSCALL_VIRT_ADDR ((ADDR(.data.read_mostly) + \
-                            SIZEOF(.data.read_mostly) + 4095) & ~(4095))
+#define VSYSCALL_PHYS_ADDR ((LOADADDR(.data) + SIZEOF(.data) + \
+                            PAGE_SIZE - 1) & ~(PAGE_SIZE - 1))
+#define VSYSCALL_VIRT_ADDR ((ADDR(.data) + SIZEOF(.data) + \
+                            PAGE_SIZE - 1) & ~(PAGE_SIZE - 1))
 
 #define VLOAD_OFFSET (VSYSCALL_ADDR - VSYSCALL_PHYS_ADDR)
 #define VLOAD(x) (ADDR(x) - VLOAD_OFFSET)
@@ -234,35 +204,29 @@ SECTIONS
 
 #endif /* CONFIG_X86_64 */
 
-        /* init_task */
-        . = ALIGN(THREAD_SIZE);
-        .data.init_task : AT(ADDR(.data.init_task) - LOAD_OFFSET) {
-                *(.data.init_task)
+        /* Init code and data - will be freed after init */
+        . = ALIGN(PAGE_SIZE);
+        .init.begin : AT(ADDR(.init.begin) - LOAD_OFFSET) {
+                __init_begin = .; /* paired with __init_end */
         }
-#ifdef CONFIG_X86_64
-         :data.init
-#endif
 
+#if defined(CONFIG_X86_64) && defined(CONFIG_SMP)
         /*
-         * smp_locks might be freed after init
-         * start/end must be page aligned
+         * percpu offsets are zero-based on SMP.  PERCPU_VADDR() changes the
+         * output PHDR, so the next output section - .init.text - should
+         * start another segment - init.
          */
-        . = ALIGN(PAGE_SIZE);
-        .smp_locks : AT(ADDR(.smp_locks) - LOAD_OFFSET) {
-                __smp_locks = .;
-                *(.smp_locks)
-                __smp_locks_end = .;
-                . = ALIGN(PAGE_SIZE);
-        }
+        PERCPU_VADDR(0, :percpu)
+#endif
 
-        /* Init code and data - will be freed after init */
-        . = ALIGN(PAGE_SIZE);
         .init.text : AT(ADDR(.init.text) - LOAD_OFFSET) {
-                __init_begin = .; /* paired with __init_end */
                 _sinittext = .;
                 INIT_TEXT
                 _einittext = .;
         }
+#ifdef CONFIG_X86_64
+        :init
+#endif
 
         .init.data : AT(ADDR(.init.data) - LOAD_OFFSET) {
                 INIT_DATA
@@ -333,17 +297,7 @@ SECTIONS
         }
 #endif
 
-#if defined(CONFIG_X86_64) && defined(CONFIG_SMP)
-        /*
-         * percpu offsets are zero-based on SMP.  PERCPU_VADDR() changes the
-         * output PHDR, so the next output section - __data_nosave - should
-         * start another section data.init2.  Also, pda should be at the head of
-         * percpu area.  Preallocate it and define the percpu offset symbol
-         * so that it can be accessed as a percpu variable.
-         */
-        . = ALIGN(PAGE_SIZE);
-        PERCPU_VADDR(0, :percpu)
-#else
+#if !defined(CONFIG_X86_64) || !defined(CONFIG_SMP)
         PERCPU(PAGE_SIZE)
 #endif
 
@@ -354,15 +308,22 @@ SECTIONS
                 __init_end = .;
         }
 
+        /*
+         * smp_locks might be freed after init
+         * start/end must be page aligned
+         */
+        . = ALIGN(PAGE_SIZE);
+        .smp_locks : AT(ADDR(.smp_locks) - LOAD_OFFSET) {
+                __smp_locks = .;
+                *(.smp_locks)
+                __smp_locks_end = .;
+                . = ALIGN(PAGE_SIZE);
+        }
+
 #ifdef CONFIG_X86_64
         .data_nosave : AT(ADDR(.data_nosave) - LOAD_OFFSET) {
-                . = ALIGN(PAGE_SIZE);
-                __nosave_begin = .;
-                *(.data.nosave)
-                . = ALIGN(PAGE_SIZE);
-                __nosave_end = .;
-        } :data.init2
-        /* use another section data.init2, see PERCPU_VADDR() above */
+                NOSAVE_DATA
+        }
 #endif
 
         /* BSS */
@@ -400,8 +361,8 @@ SECTIONS
 
 
 #ifdef CONFIG_X86_32
-ASSERT((_end - LOAD_OFFSET <= KERNEL_IMAGE_SIZE),
-        "kernel image bigger than KERNEL_IMAGE_SIZE")
+. = ASSERT((_end - LOAD_OFFSET <= KERNEL_IMAGE_SIZE),
+           "kernel image bigger than KERNEL_IMAGE_SIZE");
 #else
 /*
  * Per-cpu symbols which need to be offset from __per_cpu_load
@@ -414,12 +375,12 @@ INIT_PER_CPU(irq_stack_union);
 /*
  * Build-time check on the image size:
  */
-ASSERT((_end - _text <= KERNEL_IMAGE_SIZE),
-        "kernel image bigger than KERNEL_IMAGE_SIZE")
+. = ASSERT((_end - _text <= KERNEL_IMAGE_SIZE),
+           "kernel image bigger than KERNEL_IMAGE_SIZE");
 
 #ifdef CONFIG_SMP
-ASSERT((per_cpu__irq_stack_union == 0),
-        "irq_stack_union is not at start of per-cpu area");
+. = ASSERT((per_cpu__irq_stack_union == 0),
+           "irq_stack_union is not at start of per-cpu area");
 #endif
 
 #endif /* CONFIG_X86_32 */
@@ -427,7 +388,7 @@ ASSERT((per_cpu__irq_stack_union == 0),
 #ifdef CONFIG_KEXEC
 #include <asm/kexec.h>
 
-ASSERT(kexec_control_code_size <= KEXEC_CONTROL_CODE_MAX_SIZE,
-       "kexec control code size is too big")
+. = ASSERT(kexec_control_code_size <= KEXEC_CONTROL_CODE_MAX_SIZE,
+           "kexec control code size is too big");
 #endif