public inbox for linux-kernel@vger.kernel.org
 help / color / mirror / Atom feed
From: Mihai Moldovan <ionic@ionic.de>
To: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: LKML <linux-kernel@vger.kernel.org>,
	David Woodhouse <dwmw2@infradead.org>,
	intel-gfx <intel-gfx@lists.freedesktop.org>,
	dri-devel <dri-devel@lists.freedesktop.org>
Subject: Re: i915-related and general system freezes with specific kernel config // IOMMU
Date: Sun, 20 Jan 2013 22:52:49 +0100	[thread overview]
Message-ID: <50FC6731.3020209@ionic.de> (raw)
In-Reply-To: <CAKMK7uExHc=PEBpn2vPrX+sQcv=U7VuvsJHRxc-SSOh=_G_1Dg@mail.gmail.com>

[-- Attachment #1: Type: text/plain, Size: 731 bytes --]

Hi Daniel,

the patch does work, i.e., it turns off DMAR for the graphics card and
alleviates the freezes when loading i915/kms.

However, still seeing random machine freezes with it (being consistent with the
behavior I've experienced with intel_iommu=igfx_off).

The patch + forcing RWBF is working, too. Interestingly, this version didn't
randomly freeze yet, after more than 5 hours of uptime! I'll leave the box
running until tomorrow to make sure I did stick around long enough.

All those tested kernels were able to handle USB and PCI(e) devices.

I still have to test turning off IOMMU in general and Intel IOMMU specifically.
Will probably do this tomorrow.

Thank you so far! :)



Mihai






[-- Attachment #2: S/MIME Cryptographic Signature --]
[-- Type: application/pkcs7-signature, Size: 4506 bytes --]

  parent reply	other threads:[~2013-01-20 21:52 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-01-18 23:48 i915-related and general system freezes with specific kernel config // IOMMU Mihai Moldovan
2013-01-18 23:59 ` Mihai Moldovan
2013-01-19 13:27 ` Daniel Vetter
2013-01-19 16:13   ` Mihai Moldovan
2013-01-19 16:25     ` Daniel Vetter
2013-01-19 16:26     ` Mihai Moldovan
2013-01-19 16:30       ` Daniel Vetter
2013-01-20 21:52   ` Mihai Moldovan [this message]
2013-01-20 22:49     ` Daniel Vetter
2013-01-21 18:11       ` Mihai Moldovan
2013-01-22 18:15         ` Mihai Moldovan
2013-01-22 18:52           ` Daniel Vetter

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=50FC6731.3020209@ionic.de \
    --to=ionic@ionic.de \
    --cc=daniel.vetter@ffwll.ch \
    --cc=dri-devel@lists.freedesktop.org \
    --cc=dwmw2@infradead.org \
    --cc=intel-gfx@lists.freedesktop.org \
    --cc=linux-kernel@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox