On Tue, Jan 08, 2013 at 02:03:25AM -0500, Rik van Riel wrote:
> On 01/08/2013 12:09 AM, H. Peter Anvin wrote:
> >On 01/07/2013 09:08 PM, Rik van Riel wrote:
> >>On 01/08/2013 12:03 AM, H. Peter Anvin wrote:
> >>>On 01/07/2013 08:55 PM, Shaohua Li wrote:
>
> I searched a little bit, the cha
On 01/08/2013 12:09 AM, H. Peter Anvin wrote:
On 01/07/2013 09:08 PM, Rik van Riel wrote:
On 01/08/2013 12:03 AM, H. Peter Anvin wrote:
On 01/07/2013 08:55 PM, Shaohua Li wrote:
I searched a little bit, the change (doing TLB flush to clear access
bit) is
made between 2.6.7 - 2.6.8, I can't fi
On 01/07/2013 09:08 PM, Rik van Riel wrote:
> On 01/08/2013 12:03 AM, H. Peter Anvin wrote:
>> On 01/07/2013 08:55 PM, Shaohua Li wrote:
>>>
>>> I searched a little bit, the change (doing TLB flush to clear access
>>> bit) is
>>> made between 2.6.7 - 2.6.8, I can't find the changelog, but I found a
On 01/08/2013 12:03 AM, H. Peter Anvin wrote:
On 01/07/2013 08:55 PM, Shaohua Li wrote:
I searched a little bit, the change (doing TLB flush to clear access bit) is
made between 2.6.7 - 2.6.8, I can't find the changelog, but I found a patch:
http://www.kernel.org/pub/linux/kernel/people/akpm/pa
On 01/07/2013 08:55 PM, Shaohua Li wrote:
>
> I searched a little bit, the change (doing TLB flush to clear access bit) is
> made between 2.6.7 - 2.6.8, I can't find the changelog, but I found a patch:
> http://www.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.7-rc2/2.6.7-rc2-mm2/broken-
On Mon, Jan 07, 2013 at 02:31:21PM -0800, H. Peter Anvin wrote:
> On 01/07/2013 07:14 AM, Rik van Riel wrote:
> > On 01/07/2013 03:12 AM, Shaohua Li wrote:
> >>
> >> We use access bit to age a page at page reclaim. When clearing pte
> >> access bit,
> >> we could skip tlb flush for the virtual addr
Hi Shaohua,
On Mon, 2013-01-07 at 16:12 +0800, Shaohua Li wrote:
> We use access bit to age a page at page reclaim. When clearing pte access bit,
Who sets this flag to pte? mmu? tlb?
> we could skip tlb flush for the virtual address. The side effect is if the pte
> is in tlb and pte access bit i
On 01/07/2013 07:14 AM, Rik van Riel wrote:
> On 01/07/2013 03:12 AM, Shaohua Li wrote:
>>
>> We use access bit to age a page at page reclaim. When clearing pte
>> access bit,
>> we could skip tlb flush for the virtual address. The side effect is if
>> the pte
>> is in tlb and pte access bit is uns
On 01/07/2013 03:12 AM, Shaohua Li wrote:
We use access bit to age a page at page reclaim. When clearing pte access bit,
we could skip tlb flush for the virtual address. The side effect is if the pte
is in tlb and pte access bit is unset, when cpu access the page again, cpu will
not set pte's ac
We use access bit to age a page at page reclaim. When clearing pte access bit,
we could skip tlb flush for the virtual address. The side effect is if the pte
is in tlb and pte access bit is unset, when cpu access the page again, cpu will
not set pte's access bit. So next time page reclaim can recl
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