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x86, mm: relocate initrd under all mem for 64bit

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instead of under 4g.

For 64bit, we can use any mapped mem instead of low mem.

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Link: http://lkml.kernel.org/r/1353123563-3103-17-git-send-email-yinghai@kernel.org
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
This commit is contained in:
Yinghai Lu 2012-11-16 19:38:53 -08:00 committed by H. Peter Anvin
parent 66520ebc2d
commit 74f27655dd
1 changed files with 3 additions and 4 deletions
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7
arch/x86/kernel/setup.c
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@ -324,7 +324,7 @@ static void __init relocate_initrd(void)
char *p, *q;
/* We need to move the initrd down into directly mapped mem */
ramdisk_here = memblock_find_in_range(0, PFN_PHYS(max_low_pfn_mapped),
ramdisk_here = memblock_find_in_range(0, PFN_PHYS(max_pfn_mapped),
area_size, PAGE_SIZE);
if (!ramdisk_here)
@ -392,7 +392,7 @@ static void __init reserve_initrd(void)
initrd_start = 0;
mapped_size = get_mem_size(max_low_pfn_mapped);
mapped_size = get_mem_size(max_pfn_mapped);
if (ramdisk_size >= (mapped_size>>1))
panic("initrd too large to handle, "
"disabling initrd (%lld needed, %lld available)\n",
@ -401,8 +401,7 @@ static void __init reserve_initrd(void)
printk(KERN_INFO "RAMDISK: [mem %#010llx-%#010llx]\n", ramdisk_image,
ramdisk_end - 1);
if (ramdisk_end <= (max_low_pfn_mapped<<PAGE_SHIFT) &&
pfn_range_is_mapped(PFN_DOWN(ramdisk_image),
if (pfn_range_is_mapped(PFN_DOWN(ramdisk_image),
PFN_DOWN(ramdisk_end))) {
/* All are mapped, easy case */
/*