10 More Discussions You Might Find Interesting
1. UNIX for Advanced & Expert Users
When accessing a user mode buffers from kernel space drivers what precautions must we take and how those precautions need to be implemented? (0 Replies)
Discussion started by: rupeshkp728
0 Replies
2. Programming
Suppose I have 3 gb of ram and 250 gb hard disk in my pc.
Now I wrote a simple C program having only one statement malloc() to allocate 4 gb of memory as 32 bit os can address 4gb address space then will the malloc succeed?
If yes then how it will get extra 1 gb of memory?
Does the process gets... (3 Replies)
Discussion started by: rupeshkp728
3 Replies
3. UNIX for Dummies Questions & Answers
Need some clarification on this....
1. how are kernel/ user spaces and high/low memory related?
2. What do they all mean when i have the kernel command line as:
"console=ttyS0,115200 root=/dev/sda2 rw mem=exactmap memmap=1M@0 memmap=96M@1M irqpoll"
or
2. what do mem and memmap mean in... (3 Replies)
Discussion started by: dragonpoint
3 Replies
4. Programming
Hi All,
From C++, I just want to find the address space size that a process is allowed to use. For ex, in 32 bit OS the allowed address space is 4GB and in 64 bit OS I guess this is 16GB or more.
I jsut want to find it in my C++ project. Is there any API calls that gives me such information.... (2 Replies)
Discussion started by: Sendil Kumar
2 Replies
5. UNIX for Advanced & Expert Users
Hello, I'm searching for a proper way to let the kernel space ISR(implemented in a kernel module) wake up a user space thread on a hardware interrupt.
Except for sending a real-time signal, is it possible to use a semaphore?
I've searched it on google, but it seems impossible to share a... (0 Replies)
Discussion started by: aaronwong
0 Replies
6. Programming
Hi,
I am looking to work on unix systems which include (hp-ux, ibm aix, solaris and linux). I want to get the total virtual address space of a process, the used virtual memory i am able to get without any problem. I have tried using getrlimit and getrlimit64, but that gives only ... (4 Replies)
Discussion started by: uiqbal
4 Replies
7. Programming
Hi,
I'm currently working on a project to help the analysis of malware from inside the kernel to avoid any kind of detection.
So I need to be able to read the process memory from my kernel module.
As of now, I'm stuck at converting a virtual memory address (for example 0x080483e8 found... (3 Replies)
Discussion started by: anonymoose
3 Replies
8. HP-UX
Hi,
Please any one can help me to know that how we can restrict a user group to access the kernel at all. (0 Replies)
Discussion started by: harishankar
0 Replies
9. Programming
Hi all,
I am trying to setup a program to use a device driver and am confusing buffer access between User and Kernel mode. I think all applications running in User space have to communicate with the device drivers using io control calls and then have some functions called back from the driver... (1 Reply)
Discussion started by: Brendan Kennedy
1 Replies
10. UNIX for Dummies Questions & Answers
Hello,
Please help me to know, How to find out the how much amount of process addres space is required/is used for/by a process.
Tnx & Regards
Vishwa. (1 Reply)
Discussion started by: S.Vishwanath
1 Replies