[PATCH] powerpc/mm: fix a hardcode on memory boundary checking

From	Rui Teng <rui.teng@linux.vnet.ibm.com>
Newsgroups	linux.kernel
Subject	[PATCH] powerpc/mm: fix a hardcode on memory boundary checking
Date	2017-01-12 10:20 +0100
Message-ID	<sYJI5-2bd-3@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

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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.

Signed-off-by: Rui Teng <rui.teng@linux.vnet.ibm.com>
---
 arch/powerpc/mm/hash_utils_64.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c
index 8033493..b829f8e 100644
--- a/arch/powerpc/mm/hash_utils_64.c
+++ b/arch/powerpc/mm/hash_utils_64.c
@@ -506,7 +506,7 @@ 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);
 	}
-- 
2.9.0

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[PATCH] powerpc/mm: fix a hardcode on memory boundary checking Rui Teng <rui.teng@linux.vnet.ibm.com> - 2017-01-12 10:20 +0100

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