Re: x86: vmalloc and THP

Oren Twaig
2014-08-12T16:21:03Z

Hi Kirill,

I saw the thread has developed nicely :), still - wanted to answer your
question
below.

On 8/12/2014 9:07 AM, Kirill A. Shutemov wrote:
> On Tue, Aug 12, 2014 at 08:00:54AM +0300, Oren Twaig wrote:
>>
> plain/text, please.
Yes - noticed the html, sent again in plain text.
>> If not, is there any fast way to change this behavior ? Maybe by
>> changing the granularity/alignment of such allocations to allow such
>> mapping ?
> What's the point to use vmalloc() in this case?
I've noticed that some lock/s are using linear addresses which are
located at 0xffffc901922b4500 and from what I understand
from mm.txt (kernel 3.0.101):
*ffffc90000000000 - ffffe8ffffffffff (=45 bits) vmalloc/ioremap space

*So I'm not sure who/how/why this lock got allocated there, but obviously
it is using that linear set. No ?

>

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