From: Oren Twaig <oren@scalemp.com>
To: "Kirill A. Shutemov" <kirill@shutemov.name>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
linux-mm@kvack.org,
"Shai Fultheim (Shai@ScaleMP.com)" <Shai@scalemp.com>
Subject: Re: x86: vmalloc and THP
Date: Tue, 12 Aug 2014 19:20:52 +0300 [thread overview]
Message-ID: <53EA3EE4.6090100@scalemp.com> (raw)
In-Reply-To: <20140812060745.GA7987@node.dhcp.inet.fi>
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:
>> <html style="direction: ltr;">
> 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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WARNING: multiple messages have this Message-ID (diff)
From: Oren Twaig <oren@scalemp.com>
To: "Kirill A. Shutemov" <kirill@shutemov.name>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
linux-mm@kvack.org,
"Shai Fultheim (Shai@ScaleMP.com)" <Shai@scalemp.com>
Subject: Re: x86: vmalloc and THP
Date: Tue, 12 Aug 2014 19:20:52 +0300 [thread overview]
Message-ID: <53EA3EE4.6090100@scalemp.com> (raw)
In-Reply-To: <20140812060745.GA7987@node.dhcp.inet.fi>
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:
>> <html style="direction: ltr;">
> 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 ?
>
---
This email is free from viruses and malware because avast! Antivirus protection is active.
http://www.avast.com
next prev parent reply other threads:[~2014-08-12 16:20 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-08-12 5:00 x86: vmalloc and THP Oren Twaig
2014-08-12 6:07 ` Kirill A. Shutemov
2014-08-12 6:07 ` Kirill A. Shutemov
2014-08-12 12:28 ` Eric Dumazet
2014-08-12 12:28 ` Eric Dumazet
2014-08-12 15:01 ` Kirill A. Shutemov
2014-08-12 15:01 ` Kirill A. Shutemov
2014-08-12 16:20 ` Oren Twaig [this message]
2014-08-12 16:20 ` Oren Twaig
2014-08-12 21:40 ` Kirill A. Shutemov
2014-08-12 21:40 ` Kirill A. Shutemov
-- strict thread matches above, loose matches on Subject: below --
2014-08-12 5:01 Oren Twaig
2014-08-12 5:01 ` Oren Twaig
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