From: Jan Kiszka <jan.kiszka@siemens.com>
To: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>,
Henning Schild <henning.schild@siemens.com>
Cc: Xenomai <xenomai@xenomai.org>
Subject: Re: [Xenomai] [PATCH v3] ipipe x86 mm: handle huge pages in memory pinning
Date: Wed, 3 Feb 2016 15:31:10 +0100 [thread overview]
Message-ID: <56B20F2E.2020404@siemens.com> (raw)
In-Reply-To: <20160203142448.GB32138@hermes.click-hack.org>
On 2016-02-03 15:24, Gilles Chanteperdrix wrote:
> On Wed, Feb 03, 2016 at 01:59:25PM +0100, Henning Schild wrote:
>> In 4.1 huge page mapping of io memory was introduced, enable ipipe to
>> handle that when pinning kernel memory.
>>
>> change that introduced the feature
>> 0f616be120c632c818faaea9adcb8f05a7a8601f
>
> Could we have an assessment of whether avoiding the call to
> __ipipe_pin_range_mapping in upper layers makes the patch simpler?
For that, we first of all need to recapitulate how
__ipipe_pin_range_globally is/was supposed to work at all.
I tried to restore details but I'm specifically failing regarding that
"globally". To my understanding, the vmalloc_sync_one of x86 transfers
at best mappings from init_mm to the current mm one, but not to all mm
in the systems.
Jan
--
Siemens AG, Corporate Technology, CT RDA ITP SES-DE
Corporate Competence Center Embedded Linux
next prev parent reply other threads:[~2016-02-03 14:31 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-14 17:34 [Xenomai] ipipe x86_64 huge page ioremap Henning Schild
2016-01-15 8:32 ` Philippe Gerum
2016-01-15 12:34 ` Jan Kiszka
2016-02-02 17:43 ` Henning Schild
2016-02-03 15:07 ` Philippe Gerum
2016-02-03 15:48 ` Philippe Gerum
2016-02-04 11:43 ` Henning Schild
2016-01-26 15:20 ` [Xenomai] [PATCH] ipipe x86 mm: handle huge pages in memory pinning Henning Schild
2016-01-26 20:18 ` Jan Kiszka
2016-01-27 9:54 ` Henning Schild
2016-01-27 10:31 ` Jan Kiszka
2016-01-27 10:44 ` Philippe Gerum
2016-01-27 10:46 ` Philippe Gerum
2016-01-27 13:41 ` [Xenomai] [PATCH v2] " Henning Schild
2016-01-28 10:53 ` Philippe Gerum
2016-01-28 20:53 ` Henning Schild
2016-01-29 17:11 ` Philippe Gerum
2016-01-29 18:39 ` Gilles Chanteperdrix
2016-02-02 12:08 ` Henning Schild
2016-02-02 13:58 ` Philippe Gerum
2016-02-02 16:38 ` Henning Schild
2016-02-02 16:39 ` Jan Kiszka
2016-02-02 19:26 ` Gilles Chanteperdrix
2016-02-03 11:35 ` Henning Schild
2016-02-02 14:18 ` Philippe Gerum
2016-02-02 16:30 ` Henning Schild
2016-02-02 11:41 ` Henning Schild
2016-02-03 12:59 ` [Xenomai] [PATCH v3] " Henning Schild
2016-02-03 14:24 ` Gilles Chanteperdrix
2016-02-03 14:31 ` Jan Kiszka [this message]
2016-02-03 14:38 ` Gilles Chanteperdrix
2016-02-03 14:51 ` Jan Kiszka
2016-02-03 15:02 ` Gilles Chanteperdrix
2016-02-03 15:14 ` Jan Kiszka
2016-02-04 11:53 ` Henning Schild
2016-02-08 8:44 ` Henning Schild
2016-03-07 7:58 ` Henning Schild
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