At 10/23/2012 03:09 PM, wujianguo Wrote:
> On 2012-10-22 15:11, Wen Congyang wrote:
>> Hi, Wu
>>
>> Sorry for late reply.
>>
>> At 10/09/2012 04:26 PM, wujianguo Wrote:
>>> Hi Congyang,
>>> I think we should also free pages which are used by page tables after
>>> removing
>>> page tables of th
On 2012-10-22 15:11, Wen Congyang wrote:
> Hi, Wu
>
> Sorry for late reply.
>
> At 10/09/2012 04:26 PM, wujianguo Wrote:
>> Hi Congyang,
>> I think we should also free pages which are used by page tables after
>> removing
>> page tables of the memory.
>
> It is OK to do it.
>
>>
>> From:
Hi, Wu
Sorry for late reply.
At 10/09/2012 04:26 PM, wujianguo Wrote:
> Hi Congyang,
> I think we should also free pages which are used by page tables after
> removing
> page tables of the memory.
It is OK to do it.
>
> From: Jianguo Wu
>
> Signed-off-by: Jianguo Wu
> Signed-off-by:
On 10/08/2012 01:23 PM, Wen Congyang wrote:
At 10/08/2012 12:37 PM, Andi Kleen Wrote:
Yasuaki Ishimatsu writes:
+ }
+
+ /*
+* We use 2M page, but we need to remove part of them,
+* so split 2M page to 4
Hi Congyang,
I think we should also free pages which are used by page tables after
removing
page tables of the memory.
From: Jianguo Wu
Signed-off-by: Jianguo Wu
Signed-off-by: Jiang Liu
---
arch/x86/mm/init_64.c | 110 +++-
1 files change
At 10/08/2012 12:37 PM, Andi Kleen Wrote:
> Yasuaki Ishimatsu writes:
>> +}
>> +
>> +/*
>> + * We use 2M page, but we need to remove part of them,
>> + * so split 2M page to 4K page.
>> + */
>> +
Yasuaki Ishimatsu writes:
> + }
> +
> + /*
> + * We use 2M page, but we need to remove part of them,
> + * so split 2M page to 4K page.
> + */
> + pte = alloc_low_page(&pte_ph
From: Wen Congyang
For hot removing memory, we sholud remove page table about the memory.
So the patch searches a page table about the removed memory, and clear
page table.
CC: David Rientjes
CC: Jiang Liu
CC: Len Brown
CC: Christoph Lameter
Cc: Minchan Kim
CC: Andrew Morton
CC: KOSAKI Mot
