diff mbox

UBUNTU: [Config] Disable PAMU on Freescale kernels

Message ID 5CB2FC21-C6E3-430C-AEC0-D2A243C6F22C@servergy.com
State New
Headers show

Commit Message

Benjamin Collins April 23, 2014, 12:42 p.m. UTC
In Saucy/v3.11 kernel, we used the PAMU SAUCE patch from Freescale. The
current upstreamed PAMU code appears to break fsl-ehci by restricting 
proper access to memory locations associated with it.

PAMU is an IOMMU extension that protects and prevents access to portions
of memory that are known to be reserved for hardware use. This 
extension is not needed for normal runtime, so rather than allow broken
EHCI, let's disbale this until PAMU can be fixed.

This only affects Freescale PowerPC kernel variations.

Signed-off-by: Ben Collins <ben.c@servergy.com>


--
Benjamin M. Collins | Principal Architect
Servergy, Inc. | Save Energy. Work Smart. ®
m (757) 243-7557 | e ben.c@servergy.com
L LinkedIn | T twitter.com/Servergy
www.servergy.com

CONFIDENTIALITY NOTICE: This communication contains privileged and/or confidential information to be maintained with the strictest confidence. It is intended solely for the use of the person or entity in which it is addressed. If you are not the intended recipient, you are STRICTLY PROHIBITED from disclosing, copying, distributing or using any of this information. If you received this communication in error, please contact the sender immediately and destroy the material in its entirety, whether electronic or hard copy.  Email may contain forward looking comments that are based on managements best-faith estimates which are subject to change. For information only. Not an offer, or solicitation of any offer to buy or sell any security, investment or other product.

Comments

Tim Gardner April 23, 2014, 2:18 p.m. UTC | #1
Needs a debian.master/abi/3.13.0-24.46/powerpc/ignore.modules

P.S. When posting to a public list you really should get rid of that 
stupid and unenforceable CONFIDENTIALITY NOTICE.

rtg
Benjamin Collins April 23, 2014, 2:24 p.m. UTC | #2
On Apr 23, 2014, at 10:18 AM, Tim Gardner <tim.gardner@canonical.com> wrote:
> 
> Needs a debian.master/abi/3.13.0-24.46/powerpc/ignore.modules
> 
> P.S. When posting to a public list you really should get rid of that stupid and unenforceable CONFIDENTIALITY NOTICE.

Tim,

Sorry, silly company rules. I forget to switch to my "community" sig sometimes.

Do you need me to resend with ignore.modules entries?

--
Ben Collins - Principal Architect
Servergy, Inc. - www.servergy.com
Tim Gardner April 23, 2014, 2:32 p.m. UTC | #3
On 04/23/2014 08:24 AM, Ben Collins wrote:
> On Apr 23, 2014, at 10:18 AM, Tim Gardner <tim.gardner@canonical.com> wrote:
>>
>> Needs a debian.master/abi/3.13.0-24.46/powerpc/ignore.modules
>>
>> P.S. When posting to a public list you really should get rid of that stupid and unenforceable CONFIDENTIALITY NOTICE.
>
> Tim,
>
> Sorry, silly company rules. I forget to switch to my "community" sig sometimes.
>
> Do you need me to resend with ignore.modules entries?
>

Nah - I'll fix it up.
Tim Gardner April 23, 2014, 3:36 p.m. UTC | #4
BugLink: http://bugs.launchpad.net/bugs/1311738
diff mbox

Patch

diff --git a/debian.master/config/config.common.ubuntu b/debian.master/config/config.common.ubuntu
index a0bcc28..fa9c24e 100644
--- a/debian.master/config/config.common.ubuntu
+++ b/debian.master/config/config.common.ubuntu
@@ -2157,7 +2157,7 @@  CONFIG_FSL_EMB_PERF_EVENT_E500=y
 CONFIG_FSL_HV_MANAGER=m
 CONFIG_FSL_IFC=y
 CONFIG_FSL_LBC=y
-CONFIG_FSL_PAMU=y
+# CONFIG_FSL_PAMU is not set
 CONFIG_FSL_PCI=y
 CONFIG_FSL_PME2=y
 CONFIG_FSL_PME2_CTRL=y