*
* For user processes max context id is limited to MAX_USER_CONTEXT.
- * For kernel space, we use context ids 1-5 to map address as below:
+ * For kernel space, we use context ids 1-4 to map addresses as below:
* NOTE: each context only support 64TB now.
* 0x00001 - [ 0xc000000000000000 - 0xc0003fffffffffff ]
* 0x00002 - [ 0xd000000000000000 - 0xd0003fffffffffff ]