When I run loadmodules.sh, I get kernel tainted message

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Posted by Juan Gonzales

on Jun 04 2008 12:31 PM

The following log is produced as a result of running loadmodules.sh on DM6446 EVM with DVSDK 1.20

root@192.168.1.41:/opt/dvevm# ./loadmodules.sh
cmemk: module license '(c) Texas Instruments' taints kernel.
cmem initialized 4 pools between 0x87800000 and 0x88000000
dsplinkk: no version for "struct_module" found: kernel tainted.
DDR_START 0x8fa00000 DDR_SIZE 0x400000

Please note you can safely disregard the 'taints kernel' and 'kernel' tainted messages; these messages appear when you load any non-GPL kernel module. It is Linux T. way of encouraging all kernel modules to conform to General Public License (GPL). Because cmem and dsplink modules loaded as a result of load modules have DSP dependencies, it could not readily comply with GPL (primarily ARM-Linux side of DM6446). TI is in the process of working with the industry to make these modules open source and potentially conform to GPL.

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Posted by Chris Ring

on Jun 04 2008 22:07 PM

Genius16230 points

Note that CMEM 2.00 and later are released under the GPL v2 (and LGPL v2) licenses.

Posted by Jianjun Zhang

on Mar 25 2013 04:15 AM

Prodigy190 points

Glad to find this information. DVSDK2.0:

CMEMK module: built on Mar 25 2013 at 16:55:11
Reference Linux version 2.6.18
File /home/davinci/dvsdk_2_00_00_22/linuxutils_2_23_01/packages/ti/sdo/linuxutils/cmem/src/module/cmemk.c
ioremap_nocache(0x87800000, 10485760)=0xc9000000
allocated heap buffer 0xc9000000 of size 0x2c000
cmem initialized 5 pools between 0x87800000 and 0x88200000
dsplinkk: no version for "struct_module" found: kernel tainted.
DSPLINK Module (1.61.03) created on Date: Apr 16 2009 Time: 18:22:23

CMEMK no such info now, DSPLINKK no change.