Does kernel have its own stack other than kernel thread stack?

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votes

In x86_64, Linux, does the kernel have its own stack, other than kernel threads' stacks?

And does it have something called kernel process like FreeBSD has?

1
linuxmultithreadinglinux-kernelkernelx86-64
What do you mean "kernel have its own stack other than kernel threads"? Roughly speaking a set of kernel threads and uspace processes in system mode is a kernel. So what is your question about? – Alex Hoppus

1 Answers

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As per my knowledge, kernel has a seperate stack for IRQ & per process/thread stack for handling system calls. I don't think there is any other stack needed. Kernel code is executed either in process context or interrupt context so there are seperate stacks for both.