Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
I was wondering how a system call is treated when used in a virtual machine. Does it send some kind of signal through the virtualizing kernel and then to the “real” kernel (of the physical machine)?
I googled the subject but I can’t seem to find anything. Thank you in advance.
In a virtual machine, where all hardware is virtualized, it works just like it would on real hardware. It goes through whatever syscall instructions the architecture has, which are read by the hypervisor, which executes the instructions on it’s virtual processor.
However, in a emulation layer like Wine, syscalls in the PE executables are mapped to syscalls on the Linux kernel APIs.