Adding a new function to C6Accel triggers CMEM error

Hi there,

I am in the process of evaluating the DSP performance on DM8168. I have tried to build C6accel on latest ezsdk 5.03, but failed. without better choice, I moved back 
to the older version (5.01.00.77) in which the C6accel seems to be working. I have been able to compile and run c6accel_dsplib_testapp without any problem.  
But when I tried to write my own DSP code and hook it up with C6accel, I run into cmem errors below.

CMEMK Error: get_phys: Unable to find phys addr for 0x40229c3c
CMEMK Error: get_phys: get_user_pages() failed: -14

CMEMK Error: GETPHYS: Failed to convert virtual 0x40229c3c to physical.
CMEMK Error: get_phys: Unable to find phys addr for 0x40229c3a

CMEMK Error: get_phys: get_user_pages() failed: -14
CMEMK Error: GETPHYS: Failed to convert virtual 0x40229c3a to physical.
 
CMEM Error: getPhys: Failed to get physical address of 0x40229c3c
CMEM Error: getPhys: Failed to get physical address of 0x40229c3a

I wrote an function -- image_diff( char * imgIn1, char *imgIn2, char * imgDiff, int pixelCnt) -- to be run in DSP to speed up things. I followed the doc below to create 
all the thing necessary to make this happen.

http://processors.wiki.ti.com/index.php/C6Accel_Advanced_Users_Guide#Adding_a_new_kernel_to_C6Accel_and_integrating_with_codec_server

The shared memory driver is install as below
 insmod cmemk.ko phys_start=0x94000000 phys_end=0x95400000 pools=20x4096

Another thing I don't quite understand is when using INBUF0 and INBUF1, I always got the cmem error.  When I use INBUF3 and INBUF4 instead, the cmem 
error go away, but DSP function call still returned error.

In  c2accelw.c

    inBufDesc.numBufs  = 2;
    outBufDesc.numBufs = 1;

    fp0->imgIn1_InArrID1   =  INBUF0; //3;
    fp0->imgIn2_InArrID2   =  INBUF1; //4; 
    fp0->imgDiff_OutArrID1 = OUTBUF0; 

Any info or advice will be highly appreciated.

-Perry