Does sharedregion0 must be cached?

In my MessageQ program, the msmcsram is as sharedregion0. When i disable the cache,the ipc_start() didn't return.

The cfg file is follow:

/* Shared Memory base address and length */
var SHAREDMEM           = 0x0c300000;
var SHAREDMEMSIZE       = 0x00100000;

SharedRegion0.translate = false;
SharedRegion0.setEntryMeta(0,
    { base: SHAREDMEM, 
      len:  SHAREDMEMSIZE,
      ownerProcId: 0,
      cacheLineSize: 0,
      cacheEnable: false,
      isValid: true,
      name: "MSMCSRAM_IPC",
    });

when i pause the core0, it shows that

But when i enable the cache,the program can work well,the .cfg file is that:

/* Shared Memory base address and length */
var SHAREDMEM           = 0x0c300000;
var SHAREDMEMSIZE       = 0x00100000;

SharedRegion0.translate = false;
SharedRegion0.setEntryMeta(0,
    { base: SHAREDMEM, 
      len:  SHAREDMEMSIZE,
      ownerProcId: 0,
      cacheLineSize: 128,
      cacheEnable: true,
      isValid: true,
      name: "MSMCSRAM_IPC",
    });

Does the sharedregion 0 must be cached?