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Subject[PATCH 16/46] x86, mm: relocate initrd under all mem for 64bit
Date
instead of under 4g.

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

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
---
arch/x86/kernel/setup.c | 7 +++----
1 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index 68dffec..94f922a 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -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 */
/*
--
1.7.7


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