Exciting Facts About Kernel Driver/Module and Function Pointer Size

What are the sizes of an entire kernel driver/loadable module and a function pointer in different systems?

1. What is the size (in bytes) of an entire kernel driver/loadable module?

2. What is the size (in bytes) of a function pointer in a 32-bit system and in a 64-bit system?

Answers:

1. Size of an entire kernel driver/loadable module: The size of a kernel driver or module can vary depending on the functionality it provides.

2. Size of a function pointer: In a 32-bit system, a function pointer is typically 4 bytes in size, while in a 64-bit system, it is usually 8 bytes.

The size of a kernel driver or module can vary depending on the functionality it provides. In a typical operating system, a kernel driver or module can range from a few kilobytes to several megabytes. For example, the Linux kernel modules can be as small as a few kilobytes or as large as a few hundred kilobytes.

In a 32-bit system, a function pointer is typically 4 bytes in size, as it holds a 32-bit memory address. In a 64-bit system, a function pointer is usually 8 bytes in size, as it holds a 64-bit memory address.