| 2016-07-25 08:17:47 |
Phidias |
bug |
|
|
added bug |
| 2016-07-25 08:30:13 |
Brad Figg |
linux (Ubuntu): status |
New |
Incomplete |
|
| 2016-07-25 08:33:12 |
Phidias |
description |
[Impact]
We've found a bug on some Apollo Lake system makes it runs very slow.
[Fix]
Upstream already provided a workaround[1] to fix this problem. This patches haven't been merged in latest(v4.7) release but already in linux-next.
To fix this issue in Xenial it also needs another commit introduces macros use in the workaround:
commit 970442c599b22ccd644ebfe94d1d303bf6f87c05
Author: Dave Hansen <dave@sr71.net>
Date: Thu Jun 2 17:19:27 2016 -0700
x86/cpu/intel: Introduce macros for Intel family numbers
This workaround checks CPU families and certain features, so no further regressions is expected
[1]: https://lkml.org/lkml/2016/7/6/469 |
[Impact]
We've found a bug on some Apollo Lake system makes it runs very slow. From upstream it is caused by following reason:
"Monitored cached line may not wake up from mwait on certain Goldmont based CPUs. This patch will avoid calling current_set_polling_and_test() and thereby not set the TIF_ flag. The result is that we'll always send IPIs for wakeups."
[Fix]
Upstream already provided a workaround[1] to fix this problem. This patches haven't been merged in latest(v4.7) release but already in linux-next.
To fix this issue in Xenial it also needs another commit introduces macros use in the workaround:
commit 970442c599b22ccd644ebfe94d1d303bf6f87c05
Author: Dave Hansen <dave@sr71.net>
Date: Thu Jun 2 17:19:27 2016 -0700
x86/cpu/intel: Introduce macros for Intel family numbers
This workaround checks CPU families and certain features, so no further regressions is expected
[1]: https://lkml.org/lkml/2016/7/6/469 |
|
| 2016-07-25 08:42:28 |
Phidias |
bug |
|
|
added subscriber Canonical Hardware Enablement Team |
| 2016-07-25 08:42:34 |
Phidias |
tags |
xenial |
originate-from-1582486 somerville xenial |
|
| 2016-07-25 12:18:25 |
Anthony Wong |
linux (Ubuntu): status |
Incomplete |
Confirmed |
|
| 2016-07-25 12:18:27 |
Anthony Wong |
hwe-next: status |
New |
Confirmed |
|
| 2016-07-26 08:42:54 |
Chih-Hsyuan Ho |
summary |
[APL][SAUCE] System works slowly due to a monitor bug |
[APL][SAUCE] Slow system response time due to a monitor bug |
|
| 2016-07-27 16:23:54 |
Seth Forshee |
nominated for series |
|
Ubuntu Xenial |
|
| 2016-07-27 16:23:54 |
Seth Forshee |
bug task added |
|
linux (Ubuntu Xenial) |
|
| 2016-07-27 16:24:23 |
Seth Forshee |
linux (Ubuntu Xenial): importance |
Undecided |
High |
|
| 2016-07-27 16:24:23 |
Seth Forshee |
linux (Ubuntu Xenial): status |
New |
Fix Committed |
|
| 2016-07-28 00:30:06 |
Alberto Salvia Novella |
linux (Ubuntu): importance |
Undecided |
High |
|
| 2016-07-28 00:31:04 |
Alberto Salvia Novella |
hwe-next: status |
Confirmed |
Fix Committed |
|
| 2016-07-28 00:31:09 |
Alberto Salvia Novella |
linux (Ubuntu): status |
Confirmed |
Fix Committed |
|
| 2016-07-28 00:31:11 |
Alberto Salvia Novella |
hwe-next: status |
Fix Committed |
Confirmed |
|
| 2016-07-28 00:31:36 |
Alberto Salvia Novella |
linux (Ubuntu): status |
Fix Committed |
Confirmed |
|
| 2016-07-28 15:34:45 |
Seth Forshee |
tags |
originate-from-1582486 somerville xenial |
originate-from-1582486 somerville verification-needed-xenial xenial |
|
| 2016-08-01 06:25:10 |
Phidias |
tags |
originate-from-1582486 somerville verification-needed-xenial xenial |
originate-from-1582486 somerville verification-done-xenial xenial |
|
| 2016-08-04 02:43:43 |
Anthony Wong |
hwe-next: status |
Confirmed |
Fix Committed |
|
| 2016-08-08 15:58:20 |
Launchpad Janitor |
linux (Ubuntu Xenial): status |
Fix Committed |
Fix Released |
|
| 2016-08-08 15:58:20 |
Launchpad Janitor |
cve linked |
|
2016-3135 |
|
| 2016-08-08 15:58:20 |
Launchpad Janitor |
cve linked |
|
2016-4440 |
|
| 2016-08-08 15:58:20 |
Launchpad Janitor |
cve linked |
|
2016-4470 |
|
| 2016-08-08 15:58:20 |
Launchpad Janitor |
cve linked |
|
2016-4794 |
|
| 2016-08-08 15:58:20 |
Launchpad Janitor |
cve linked |
|
2016-5243 |
|
| 2016-08-10 18:40:43 |
Launchpad Janitor |
linux (Ubuntu): status |
Confirmed |
Fix Released |
|
| 2017-03-06 04:13:55 |
Anthony Wong |
hwe-next: status |
Fix Committed |
Fix Released |
|
