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authorLinus Torvalds <torvalds@linux-foundation.org>2009-06-12 09:26:32 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-06-12 09:26:32 -0700
commitdb8e7f10ed67933ca272f4030eb7057b7f13de07 (patch)
tree0e0ef8b5fc4357fc91d34b75ee4603468439d348
parent8ebf975608aaebd7feb33d77f07ba21a6380e086 (diff)
parent1260866a271abc84274345580f3d613d3bceff87 (diff)
Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86: Provide _sdata in the vmlinux.lds.S file x86: handle initrd that extends into unusable memory
-rw-r--r--arch/x86/kernel/setup.c15
-rw-r--r--arch/x86/kernel/vmlinux.lds.S2
2 files changed, 5 insertions, 12 deletions
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index d1c636bf31a7..be5ae80f897f 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -301,15 +301,13 @@ static void __init reserve_brk(void)
#ifdef CONFIG_BLK_DEV_INITRD
-#ifdef CONFIG_X86_32
-
#define MAX_MAP_CHUNK (NR_FIX_BTMAPS << PAGE_SHIFT)
static void __init relocate_initrd(void)
{
u64 ramdisk_image = boot_params.hdr.ramdisk_image;
u64 ramdisk_size = boot_params.hdr.ramdisk_size;
- u64 end_of_lowmem = max_low_pfn << PAGE_SHIFT;
+ u64 end_of_lowmem = max_low_pfn_mapped << PAGE_SHIFT;
u64 ramdisk_here;
unsigned long slop, clen, mapaddr;
char *p, *q;
@@ -365,14 +363,13 @@ static void __init relocate_initrd(void)
ramdisk_image, ramdisk_image + ramdisk_size - 1,
ramdisk_here, ramdisk_here + ramdisk_size - 1);
}
-#endif
static void __init reserve_initrd(void)
{
u64 ramdisk_image = boot_params.hdr.ramdisk_image;
u64 ramdisk_size = boot_params.hdr.ramdisk_size;
u64 ramdisk_end = ramdisk_image + ramdisk_size;
- u64 end_of_lowmem = max_low_pfn << PAGE_SHIFT;
+ u64 end_of_lowmem = max_low_pfn_mapped << PAGE_SHIFT;
if (!boot_params.hdr.type_of_loader ||
!ramdisk_image || !ramdisk_size)
@@ -402,14 +399,8 @@ static void __init reserve_initrd(void)
return;
}
-#ifdef CONFIG_X86_32
relocate_initrd();
-#else
- printk(KERN_ERR "initrd extends beyond end of memory "
- "(0x%08llx > 0x%08llx)\ndisabling initrd\n",
- ramdisk_end, end_of_lowmem);
- initrd_start = 0;
-#endif
+
free_early(ramdisk_image, ramdisk_end);
}
#else
diff --git a/arch/x86/kernel/vmlinux.lds.S b/arch/x86/kernel/vmlinux.lds.S
index 4c85b2e2bb65..367e87882041 100644
--- a/arch/x86/kernel/vmlinux.lds.S
+++ b/arch/x86/kernel/vmlinux.lds.S
@@ -108,6 +108,8 @@ SECTIONS
/* Data */
. = ALIGN(PAGE_SIZE);
.data : AT(ADDR(.data) - LOAD_OFFSET) {
+ /* Start of data section */
+ _sdata = .;
DATA_DATA
CONSTRUCTORS