* [PATCH] - Fix kernel_physical_mapping_init() for large x86 systems
@ 2008-07-16 16:11 Jack Steiner
2008-07-16 16:28 ` Ingo Molnar
0 siblings, 1 reply; 2+ messages in thread
From: Jack Steiner @ 2008-07-16 16:11 UTC (permalink / raw)
To: mingo, tglx; +Cc: linux-mm, linux-kernel
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>
---
arch/x86/mm/init_64.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
Index: linux/arch/x86/mm/init_64.c
===================================================================
--- linux.orig/arch/x86/mm/init_64.c 2008-07-15 16:43:49.000000000 -0500
+++ linux/arch/x86/mm/init_64.c 2008-07-16 11:00:25.000000000 -0500
@@ -644,7 +644,7 @@ static unsigned long __init kernel_physi
unsigned long pud_phys;
pud_t *pud;
- next = start + PGDIR_SIZE;
+ next = (start + PGDIR_SIZE) & PGDIR_MASK;
if (next > end)
next = end;
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^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [PATCH] - Fix kernel_physical_mapping_init() for large x86 systems
2008-07-16 16:11 [PATCH] - Fix kernel_physical_mapping_init() for large x86 systems Jack Steiner
@ 2008-07-16 16:28 ` Ingo Molnar
0 siblings, 0 replies; 2+ messages in thread
From: Ingo Molnar @ 2008-07-16 16:28 UTC (permalink / raw)
To: Jack Steiner; +Cc: tglx, linux-mm, linux-kernel, H. Peter Anvin, Yinghai Lu
* Jack Steiner <steiner@sgi.com> wrote:
> 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>
applied to tip/x86/urgent - thanks Jack.
Ingo
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2008-07-16 16:11 [PATCH] - Fix kernel_physical_mapping_init() for large x86 systems Jack Steiner
2008-07-16 16:28 ` Ingo Molnar
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