kmalloc function and protection (READ,WRITE,EXEC)

Question

I have a question regarding kmalloc function (found in the linux kernel) and protection:

1. What is the default protection (write/read/exec) for an allocated memory created by kmalloc?
2. How can I change the allocated region's protection? (from kernel mode)
3. How can I find all kernel allocated memory and its protection?

Thanks.

Answer 1

Kmalloc只是REAL内存管理器kmem 缓存分配器的接口 。