Re: [Qemu-devel] qemu and transparent huge pages

[Michael Tokarev <mjt@tls.msk.ru>]

On 13.11.2012 18:30, Aurelien Jarno wrote:
> Isn't ad0b5321f1f797274603ebbe20108b0750baee94 enough?

Oh.  It has been applied.  I expected it will be ignored
just like my patch has been.

No, it is not enough: that patch alone does nothing for
the alignment on at least x86, which is necessary for
hugepages to work.  My patch _also_ fixes alignment issue.

Where to apply MADV_HUGEPAGE is a different question.
I don't know which layer it is best to apply it to.

Thanks,

/mjt

> On Mon, Nov 12, 2012 at 07:18:49PM +0400, Michael Tokarev wrote:
>> Ping^2 ?
>>
>> Thanks,
>>
>> /mjt
>>
>> 16.09.2012 15:19, Michael Tokarev wrote:
>>> So, is the patch okay?
>>>
>>> Thanks,
>>>
>>> /mjt
>>>
>>> On 15.08.2012 19:03, Michael Tokarev wrote:
>>>> On 15.08.2012 18:26, Avi Kivity wrote:
>>>>> On 08/15/2012 05:22 PM, Michael Tokarev wrote:
>>>>>
>>>>>>>
>>>>>>> Please provide extra info, like the setting of
>>>>>>> /sys/kernel/mm/transparent_hugepage/enabled.
>>>>>>
>>>>>> That was it - sort of.  Default value here is enabled=madvise.
>>>>>> When setting it to always the effect finally started appearing,
>>>>>> so it is actually working.
>>>>>>
>>>>>> But can't qemu set MADV_HUGEPAGE flag too, so it works automatically?
>>>>>
>>>>> It can and should.
>>>>
>>>> Something like the attached patch?
>>>>
>>>> Thanks,
>>>>
>>>> /mjt
>>>
>>
>>
>>
>