| 2011-05-05 18:36:32 |
Thomas Schlichter |
bug |
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added bug |
| 2011-05-05 18:36:32 |
Thomas Schlichter |
attachment added |
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fix_vesafb_mtrr_module_param.patch https://bugs.launchpad.net/bugs/778043/+attachment/2115041/+files/fix_vesafb_mtrr_module_param.patch |
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| 2011-05-05 18:37:13 |
Thomas Schlichter |
attachment added |
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enable_vesafb_mtrr_by_default.patch https://bugs.launchpad.net/ubuntu/+source/linux/+bug/778043/+attachment/2115044/+files/enable_vesafb_mtrr_by_default.patch |
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| 2011-05-06 17:33:39 |
Brian Murray |
bug |
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added subscriber Jeremy Foshee |
| 2011-05-19 10:45:10 |
Andy Whitcroft |
linux (Ubuntu): status |
New |
Triaged |
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| 2011-05-19 10:45:11 |
Andy Whitcroft |
linux (Ubuntu): importance |
Undecided |
Low |
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| 2011-05-19 10:45:14 |
Andy Whitcroft |
linux (Ubuntu): assignee |
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Andy Whitcroft (apw) |
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| 2011-05-19 13:52:04 |
Andy Whitcroft |
nominated for series |
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Ubuntu Lucid |
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| 2011-05-19 13:52:04 |
Andy Whitcroft |
bug task added |
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linux (Ubuntu Lucid) |
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| 2011-05-19 13:52:04 |
Andy Whitcroft |
nominated for series |
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Ubuntu Maverick |
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| 2011-05-19 13:52:04 |
Andy Whitcroft |
bug task added |
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linux (Ubuntu Maverick) |
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| 2011-05-19 13:52:04 |
Andy Whitcroft |
nominated for series |
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Ubuntu Oneiric |
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| 2011-05-19 13:52:04 |
Andy Whitcroft |
bug task added |
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linux (Ubuntu Oneiric) |
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| 2011-05-19 13:52:04 |
Andy Whitcroft |
nominated for series |
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Ubuntu Natty |
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| 2011-05-19 13:52:04 |
Andy Whitcroft |
bug task added |
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linux (Ubuntu Natty) |
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| 2011-05-19 13:52:26 |
Andy Whitcroft |
linux (Ubuntu Natty): status |
New |
Triaged |
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| 2011-05-19 13:52:28 |
Andy Whitcroft |
linux (Ubuntu Maverick): status |
New |
Triaged |
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| 2011-05-19 13:52:32 |
Andy Whitcroft |
linux (Ubuntu Lucid): status |
New |
Triaged |
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| 2011-05-19 13:52:35 |
Andy Whitcroft |
linux (Ubuntu Natty): importance |
Undecided |
Low |
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| 2011-05-19 13:52:38 |
Andy Whitcroft |
linux (Ubuntu Maverick): importance |
Undecided |
Low |
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| 2011-05-19 13:52:40 |
Andy Whitcroft |
linux (Ubuntu Lucid): importance |
Undecided |
Low |
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| 2011-05-19 13:52:42 |
Andy Whitcroft |
linux (Ubuntu Natty): assignee |
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Andy Whitcroft (apw) |
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| 2011-05-19 13:52:44 |
Andy Whitcroft |
linux (Ubuntu Maverick): assignee |
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Andy Whitcroft (apw) |
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| 2011-05-19 13:52:46 |
Andy Whitcroft |
linux (Ubuntu Lucid): assignee |
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Andy Whitcroft (apw) |
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| 2011-05-19 13:53:35 |
Andy Whitcroft |
linux (Ubuntu Lucid): status |
Triaged |
In Progress |
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| 2011-05-19 13:53:37 |
Andy Whitcroft |
linux (Ubuntu Maverick): status |
Triaged |
In Progress |
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| 2011-05-19 13:53:39 |
Andy Whitcroft |
linux (Ubuntu Natty): status |
Triaged |
In Progress |
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| 2011-05-19 13:53:41 |
Andy Whitcroft |
linux (Ubuntu Oneiric): status |
Triaged |
In Progress |
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| 2011-05-19 16:22:15 |
Andy Whitcroft |
description |
The UBUNTU SAUCE patches that add module support to vesafb make the "mtrr" module parameter "bool". This only allows the values 0 and 1, thus no MTRR entries or "uncachable" MTRR entries. To enable write-combining (or write-back) MTRR entries, the "mtrr" module parameter should be "uint" (or "int").
I'll attach two patches, the first makes the described modification, the second one additionally makes write-combining MTRR entries the default. (Just as it already is for e.g. uvesafb.)
Kind regards,
Thomas |
SRU Justification:
Impact: users are unable to specify all possible memory combining modes for vesafb, leading to poor performance
Fix: minor change allowing a greater range of values for the mtrr parameter, from the maintainer of the driver, specific to ubuntu sauce patches
Testcase: use of the module parameter vesafb.mtrr=3 etc works and shows up in /proc/mtrr with the correct permissions
===
The UBUNTU SAUCE patches that add module support to vesafb make the "mtrr" module parameter "bool". This only allows the values 0 and 1, thus no MTRR entries or "uncachable" MTRR entries. To enable write-combining (or write-back) MTRR entries, the "mtrr" module parameter should be "uint" (or "int").
I'll attach two patches, the first makes the described modification, the second one additionally makes write-combining MTRR entries the default. (Just as it already is for e.g. uvesafb.)
Kind regards,
Thomas |
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| 2011-05-21 10:15:12 |
Launchpad Janitor |
linux (Ubuntu Oneiric): status |
In Progress |
Fix Released |
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| 2011-05-25 15:59:20 |
Tim Gardner |
bug |
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added subscriber Ubuntu Stable Release Updates Team |
| 2011-06-07 15:15:08 |
Herton R. Krzesinski |
tags |
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verification-needed-natty |
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| 2011-06-07 22:23:05 |
Thomas Schlichter |
tags |
verification-needed-natty |
verification-done-natty |
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| 2011-06-09 13:20:40 |
Launchpad Janitor |
branch linked |
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lp:ubuntu/lucid-proposed/linux-lts-backport-natty |
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| 2011-06-13 15:51:22 |
Herton R. Krzesinski |
tags |
verification-done-natty |
verification-done-natty verification-needed-lucid verification-needed-maverick |
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| 2011-06-14 07:29:27 |
Launchpad Janitor |
branch linked |
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lp:ubuntu/lucid-proposed/linux-mvl-dove |
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| 2011-06-14 16:04:00 |
Steve Conklin |
tags |
verification-done-natty verification-needed-lucid verification-needed-maverick |
verification-done-lucid verification-done-maverick verification-done-natty |
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| 2011-06-14 18:54:19 |
Launchpad Janitor |
branch linked |
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lp:ubuntu/maverick-proposed/linux-mvl-dove |
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| 2011-06-27 14:38:54 |
Launchpad Janitor |
linux (Ubuntu Maverick): status |
In Progress |
Fix Released |
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| 2011-06-27 14:38:54 |
Launchpad Janitor |
cve linked |
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2010-4529 |
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| 2011-06-27 14:38:54 |
Launchpad Janitor |
cve linked |
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2010-4565 |
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| 2011-06-27 14:38:54 |
Launchpad Janitor |
cve linked |
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2011-0463 |
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| 2011-06-27 14:38:54 |
Launchpad Janitor |
cve linked |
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2011-0711 |
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| 2011-06-27 14:38:54 |
Launchpad Janitor |
cve linked |
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2011-1016 |
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| 2011-06-27 14:38:54 |
Launchpad Janitor |
cve linked |
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2011-1017 |
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| 2011-06-27 14:38:54 |
Launchpad Janitor |
cve linked |
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2011-1169 |
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| 2011-06-27 14:38:54 |
Launchpad Janitor |
cve linked |
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2011-1494 |
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| 2011-06-27 14:38:54 |
Launchpad Janitor |
cve linked |
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2011-1748 |
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| 2011-07-13 05:58:40 |
Launchpad Janitor |
linux (Ubuntu Natty): status |
In Progress |
Fix Released |
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| 2011-07-14 23:52:37 |
Launchpad Janitor |
linux (Ubuntu Lucid): status |
In Progress |
Fix Released |
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| 2011-07-14 23:52:37 |
Launchpad Janitor |
cve linked |
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2010-3848 |
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