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Diffstat (limited to 'arch/x86/kernel/vmlinux_32.lds.S')
-rw-r--r--arch/x86/kernel/vmlinux_32.lds.S21
1 files changed, 18 insertions, 3 deletions
diff --git a/arch/x86/kernel/vmlinux_32.lds.S b/arch/x86/kernel/vmlinux_32.lds.S
index 0d860963f268..62ad500d55f3 100644
--- a/arch/x86/kernel/vmlinux_32.lds.S
+++ b/arch/x86/kernel/vmlinux_32.lds.S
@@ -189,15 +189,24 @@ SECTIONS
*(.bss)
. = ALIGN(4);
__bss_stop = .;
- _end = . ;
- /* This is where the kernel creates the early boot page tables */
+ }
+
+ .brk : AT(ADDR(.brk) - LOAD_OFFSET) {
. = ALIGN(PAGE_SIZE);
- pg0 = . ;
+ __brk_base = . ;
+ . += 64 * 1024 ; /* 64k alignment slop space */
+ *(.brk_reservation) /* areas brk users have reserved */
+ __brk_limit = . ;
+ }
+
+ .end : AT(ADDR(.end) - LOAD_OFFSET) {
+ _end = . ;
}
/* Sections to be discarded */
/DISCARD/ : {
*(.exitcall.exit)
+ *(.discard)
}
STABS_DEBUG
@@ -205,6 +214,12 @@ SECTIONS
DWARF_DEBUG
}
+/*
+ * Build-time check on the image size:
+ */
+ASSERT((_end - LOAD_OFFSET <= KERNEL_IMAGE_SIZE),
+ "kernel image bigger than KERNEL_IMAGE_SIZE")
+
#ifdef CONFIG_KEXEC
/* Link time checks */
#include <asm/kexec.h>