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powerpc/mm: Fix check of multiple 16G pages from device tree 

The offset of hugepage block will not be 16G, if the expected
page is more than one. Calculate the totol size instead of the
hardcode value.

Fixes: 4792adbac9 ("powerpc: Don't use a 16G page if beyond mem= limits")
Signed-off-by: Rui Teng <rui.teng@linux.vnet.ibm.com>
Tested-by: Anshuman Khandual <khandual@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Rui Teng 2017-01-12 17:09:06 +08:00 committed by Michael Ellerman
parent 9227f04314
commit 23493c1219
1 changed files with 1 additions and 1 deletions
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2
arch/powerpc/mm/hash_utils_64.c
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@ -507,7 +507,7 @@ static int __init htab_dt_scan_hugepage_blocks(unsigned long node,
printk(KERN_INFO "Huge page(16GB) memory: "
"addr = 0x%lX size = 0x%lX pages = %d\n",
phys_addr, block_size, expected_pages);
if (phys_addr + (16 * GB) <= memblock_end_of_DRAM()) {
if (phys_addr + block_size * expected_pages <= memblock_end_of_DRAM()) {
memblock_reserve(phys_addr, block_size * expected_pages);
add_gpage(phys_addr, block_size, expected_pages);
}