| 2010-01-14 10:55:15 |
Dave Martin |
bug |
|
|
added bug |
| 2010-01-14 10:55:30 |
Dave Martin |
visibility |
public |
private |
|
| 2010-01-14 10:57:45 |
Bryan Wu |
linux-fsl-imx51 (Ubuntu): assignee |
|
Bryan Wu (cooloney) |
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| 2010-01-15 12:28:48 |
Bryan Wu |
attachment added |
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0001-UBUNTU-SAUCE-IMX51-only-export-NEON-flag-to-userspac.patch http://launchpadlibrarian.net/37919906/0001-UBUNTU-SAUCE-IMX51-only-export-NEON-flag-to-userspac.patch |
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| 2010-01-15 16:07:14 |
Dave Martin |
attachment added |
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neon-check.tar.gz http://launchpadlibrarian.net/37927072/neon-check.tar.gz |
|
| 2010-01-21 10:45:14 |
Alexander Sack |
bug task added |
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uboot-imx (Ubuntu) |
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| 2010-01-22 08:41:29 |
Alexander Sack |
visibility |
private |
public |
|
| 2010-01-22 09:07:06 |
Zhang Lily |
attachment added |
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0069-ENGR00118739-Correct-the-board-version-of-MX51-EVK.patch http://launchpadlibrarian.net/38213403/0069-ENGR00118739-Correct-the-board-version-of-MX51-EVK.patch |
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| 2010-01-22 09:07:09 |
Zhang Lily |
attachment added |
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0069-ENGR00118739-Correct-the-board-version-of-MX51-EVK.patch http://launchpadlibrarian.net/38213404/0069-ENGR00118739-Correct-the-board-version-of-MX51-EVK.patch |
|
| 2010-01-22 10:35:24 |
Alexander Sack |
uboot-imx (Ubuntu): status |
New |
Triaged |
|
| 2010-01-22 10:35:29 |
Alexander Sack |
uboot-imx (Ubuntu): importance |
Undecided |
High |
|
| 2010-01-22 10:35:36 |
Alexander Sack |
linux-fsl-imx51 (Ubuntu): status |
New |
Triaged |
|
| 2010-01-22 10:35:40 |
Alexander Sack |
linux-fsl-imx51 (Ubuntu): importance |
Undecided |
High |
|
| 2010-01-23 14:18:06 |
Charlie_Smotherman |
removed subscriber Charlie_Smotherman (porthose) |
|
|
|
| 2010-01-27 10:14:31 |
Andy Whitcroft |
linux-fsl-imx51 (Ubuntu): status |
Triaged |
Fix Committed |
|
| 2010-01-27 12:45:22 |
Launchpad Janitor |
linux-fsl-imx51 (Ubuntu): status |
Fix Committed |
Fix Released |
|
| 2010-01-27 13:17:10 |
Launchpad Janitor |
branch linked |
|
lp:ubuntu/linux-fsl-imx51 |
|
| 2010-02-02 16:57:48 |
Dave Martin |
linux-fsl-imx51 (Ubuntu): status |
Fix Released |
Confirmed |
|
| 2010-02-11 20:31:17 |
Tim Gardner |
nominated for series |
|
Ubuntu Karmic |
|
| 2010-02-11 20:31:17 |
Tim Gardner |
bug task added |
|
linux-fsl-imx51 (Ubuntu Karmic) |
|
| 2010-02-11 20:31:17 |
Tim Gardner |
bug task added |
|
uboot-imx (Ubuntu Karmic) |
|
| 2010-02-11 20:31:17 |
Tim Gardner |
nominated for series |
|
Ubuntu Lucid |
|
| 2010-02-11 20:31:17 |
Tim Gardner |
bug task added |
|
linux-fsl-imx51 (Ubuntu Lucid) |
|
| 2010-02-11 20:31:17 |
Tim Gardner |
bug task added |
|
uboot-imx (Ubuntu Lucid) |
|
| 2010-02-11 20:39:52 |
Tim Gardner |
linux-fsl-imx51 (Ubuntu Karmic): importance |
Undecided |
Medium |
|
| 2010-02-11 20:39:52 |
Tim Gardner |
linux-fsl-imx51 (Ubuntu Karmic): status |
New |
In Progress |
|
| 2010-02-11 20:39:52 |
Tim Gardner |
linux-fsl-imx51 (Ubuntu Karmic): assignee |
|
Tim Gardner (timg-tpi) |
|
| 2010-02-11 21:31:08 |
Brian Murray |
tags |
armel |
armel patch |
|
| 2010-02-11 21:41:02 |
Brian Murray |
removed subscriber Ubuntu Review Team |
|
|
|
| 2010-02-12 04:46:10 |
Tim Gardner |
attachment added |
|
0001-UBUNTU-SAUCE-IMX51-only-export-NEON-flag-to-users.patch http://launchpadlibrarian.net/39086083/0001-UBUNTU-SAUCE-IMX51-only-export-NEON-flag-to-users.patch |
|
| 2010-02-12 16:13:40 |
Oliver Grawert |
uboot-imx (Ubuntu Karmic): status |
New |
Invalid |
|
| 2010-02-12 16:13:48 |
Oliver Grawert |
uboot-imx (Ubuntu Lucid): status |
Triaged |
Fix Released |
|
| 2010-02-17 15:48:41 |
Martin Pitt |
linux-fsl-imx51 (Ubuntu Karmic): status |
In Progress |
Fix Committed |
|
| 2010-02-17 15:48:49 |
Martin Pitt |
tags |
armel patch |
armel patch verification-needed |
|
| 2010-02-18 13:39:46 |
Launchpad Janitor |
branch linked |
|
lp:ubuntu/karmic-proposed/linux-fsl-imx51 |
|
| 2010-02-19 23:44:27 |
Brian Murray |
removed subscriber Ubuntu Review Team |
|
|
|
| 2010-02-23 06:13:23 |
Emmet Hikory |
description |
Observed for example running ffplay to decode H.264 video on Babbage 2.0
This needs to be worked around by a separate kernel image for the affected platforms, or the ability to enable or disable CONFIG_NEON at boot.
Note that the principal problem here is the reporting of neon in the auxv AT_HWCAP word and /proc/cpuinfo which may mislead userspace apps into using NEON.
The NEON context-switching code enabled by CONFIG_NEON should not itself cause problems. |
Observed for example running ffplay to decode H.264 video on Babbage 2.0
This needs to be worked around by a separate kernel image for the affected platforms, or the ability to enable or disable CONFIG_NEON at boot.
Note that the principal problem here is the reporting of neon in the auxv AT_HWCAP word and /proc/cpuinfo which may mislead userspace apps into using NEON.
The NEON context-switching code enabled by CONFIG_NEON should not itself cause problems.
TEST CASE
=======
1) Download the neon-checker.tar.gz attachment
2) Build this with the following:
$ gcc -g -march=armv7 -mfpu=neon -o neon-check neon-check.s
$ gcc -g -march=armv7 -mfpu=neon -o neon-probe neon-probe.s
3) Run each of neon-check and neon-probe
$ ./neon-check &
$ ./neon-probe &
Result if bug is present:
neon-check will exit immediately with SIGILL or print error messages
Result if bug is addressed:
both programs run without error endlessly
(this can be considered satisfied aftern an hour or so for SRU verification purposes)
|
|
| 2010-02-23 14:07:24 |
Bryan Wu |
linux-fsl-imx51 (Ubuntu Lucid): status |
Confirmed |
Fix Released |
|
| 2010-03-04 09:16:45 |
Martin Pitt |
linux-fsl-imx51 (Ubuntu Karmic): status |
Fix Committed |
Triaged |
|
| 2010-03-04 12:03:23 |
Martin Pitt |
linux-fsl-imx51 (Ubuntu Karmic): status |
Triaged |
Fix Committed |
|
| 2010-03-16 18:43:39 |
Paul Larson |
tags |
armel patch verification-needed |
armel patch verification-failed |
|
| 2010-03-27 22:30:44 |
Aron Griffis |
removed subscriber Aron Griffis |
|
|
|
| 2010-03-31 09:01:41 |
Dave Martin |
attachment added |
|
Ensure correct data alignment in NEON checker http://launchpadlibrarian.net/42635760/neon-check-alignment.diff |
|
| 2010-03-31 16:08:01 |
Paul Larson |
tags |
armel patch verification-failed |
armel patch verification-done |
|
| 2010-04-28 17:37:25 |
Launchpad Janitor |
linux-fsl-imx51 (Ubuntu Karmic): status |
Fix Committed |
Fix Released |
|
| 2011-10-05 22:10:51 |
Jeremy Foshee |
removed subscriber Jeremy Foshee |
|
|
|
