Very Very Good Video. Because from a long time i searched for learn the drivers in systems !! 👨‍💻👨‍💻👨‍💻 and after this i will complete the all videos of operating system (as i get interested). CHALLENGE ACCEPTED :- COMPLETE PLAYLIST OF O.S ❤❤ THANKS AGAIN DIIII 👨‍💻👨‍💻

Amazing lecture. To the point. Thank you ma'am 🎉

Thank you ma'am

GOAT, I wish I had found them earlier. Thanks

The Greatest Of All Time, Thank you so much!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Isn’t there a dead lock in the guest code with parent and child? What if the parent code runs before the child? It locks and waits for signal. But then child starts and tries to lock… then it can’t lock because parent has the lock, so it wait as well… parent and child are both sleeping, causing deadlock. Am I missing something?

Thanks you very much

Thank you so much, this is easier than what prof taught me in the class.

Singlehandedly contributing to my exam prep

The professionalism in your speech is out of this universe :) you're sooo good at explaining the toghest of things in the minimum words possible. The simplicity yet the elegance❤ ....These lectures are gems for anyone starting with OS. Thank you so much for these <3

This is explained very well! Watched this because a lot of things were unclear to me about trap handling. This video explained everything in detail and cleared all the doubts I had.

Truely Amazing playlist ma'am! It's a Gem on KZbin 💎 !!!

So when cpu is in kernel mode it might happen that a context switch occurs. Ofcourse it will leave it there and move to next task, but surly a system call will eventually return to the user process which actually invoked it.

Currently learning OS using OSTEP, i really liked this first video, looking forward to watching the rest! This playlist is a bit old (6+ years), does anyone know if there are any parts that are outdated and should be looked at elsewhere?

digitalsoftwarekey

mam its enough for gate os ?

How do you find duration of a process before running it

In what year should SC students study this, please someone answer 🙏🏻

Love your every explaination mam.

Gold

Mam, you have such a ultimate explanation, thank you soo much!

Thank you so much

I think I was getting this stuff until last video. I lost it in this video

But kernel stack of each process is fixed right? How are we making the address of old pointer point to stack where we pushed the updated information. Even we had pushed the information in the same stack, we didn't delete the stale information?

arrayyy thanks a lot mam 😍😍

23:10 Mam ,Can you please explain what the author means in book Operating Systems: Three Easy Pieces when he says " Note that there are two types of register saves/restores that happen during this protocol. The first is when the timer interrupt occurs; in this case, the user register state of the running process is implicitly saved by the hardware, using the kernel stack of that process. The second is when the OS decides to switch from A to B; in this case, the kernel register state is explicitly saved by the software (i.e., the OS), but this time into memory in the process structure of the process" My doubt is in this line -> "but this time into memory in the process structure of the process" , Here he has treated Process structure of process and per -process kernel stack differently.So mam what's the difference between them Thanks

Excellent explanation on the use of conditional variables

Thanks for the awesome video! May I ask which chapter of the book this video refers to? I couldn’t find the function call/syscall part in the mechanism chapter😢

3:35 -> SO_REUSEPORT can be used with both TCP and UDP sockets. With TCP sockets, it allows multiple listening sockets-normally each in a differet thread-to be bound to the same port.

Is this course enough for GATE preparation? Mam pls answer

Very useful explanation, thank you! Also I would like to know, in a context switch, at what point in the original xv6 code does the execution of instructions for the new process begin?

Why is the scheduler process needed? why cannot the sched function be used to determine which process to switch to? In order to switch from P1 to P2 why is xv6 switching from P1 to scheduler and then to P2?

thanks !!!

A very nice lecture madam. Thanks a lot 🙏

thanks for these lectures.

If I found your videos months ago I will be a dean of school by now, but I found them just hours before my finals😪

Also what is the struct for the threads created in the process?

When a pthread mutex init happens wrt to a process, does that also open up a file? What is the memory footprint of pthread mutex

Hello Ma'am, first of all many thanks for these wonderful lectures. These lecture are a gold mine for those wanting to gain mastery in OS and virtualization. One question - As mentioned, the CPU looks up IDT and finds the nth entry. But, since the eip is always set to point to start of alltraps code, what is the need of this lookup. Are there any other registers which get set using this lookup? And, how does C trap code get the value of n so that it can service corresponding trap? Thanks in advance!

Far better than my college's prof. can ever teach

This is real quality content. Real gems on the youtube are still undiscovered.

Thanks a lot Ma'am for these amazingly detailed and lucid lectures

缘分使我遇到了这个印度老师，这门课，很棒的课hhh

isse accha to mera college ka prof hai

When a program makes a system call, it suspends its own execution context and switches to the kernel's execution context. Then how is it possible for a process to get terminated while execution context being in the kernel mode or how is it possible for a process to make a blocking system call.

🎉🎉🎉🎉😊😊😊😊

Simply Brilliant!! One of the best OS playlist on KZbin. Thanks a lot Professor.

Does a context switch happens exclusively in kernel mode? or it can happen in user mode too?

1:20

Thank you for sharing your instructions!