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x86: fix kernel_physical_mapping_init() for large x86 systems
author
Jack Steiner
<steiner@sgi.com>
Wed, 16 Jul 2008 16:11:59 +0000
(11:11 -0500)
committer
Ingo Molnar
<mingo@elte.hu>
Wed, 16 Jul 2008 16:27:36 +0000
(18:27 +0200)
Fix bug in kernel_physical_mapping_init() that causes kernel
page table to be built incorrectly for systems with greater
than 512GB of memory.
Signed-off-by: Jack Steiner <steiner@sgi.com>
Cc: linux-mm@kvack.org
Signed-off-by: Ingo Molnar <mingo@elte.hu>
arch/x86/mm/init_64.c
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diff --git
a/arch/x86/mm/init_64.c
b/arch/x86/mm/init_64.c
index 27de2435e0080f419e3c5ac7386f710b993a93cd..306049edd55322a3c5aec4c7acdf3e38e224eda6 100644
(file)
--- a/
arch/x86/mm/init_64.c
+++ b/
arch/x86/mm/init_64.c
@@
-644,7
+644,7
@@
static unsigned long __init kernel_physical_mapping_init(unsigned long start,
unsigned long pud_phys;
pud_t *pud;
- next =
start + PGDIR_SIZE
;
+ next =
(start + PGDIR_SIZE) & PGDIR_MASK
;
if (next > end)
next = end;