OS support for virtual memory about riscv-linux

[sorear]

Linux uses the standard page table described in the privileged spec. How TLBs work is a question for your chip vendor.

[susi655]

So TLB filling is done by hardware. Is it?

[sorear]

It can be done by hardware or software. It is not done by Linux.

[susi655]

Few doubts regarding Page table
Is it optional to implement hardware page walker?
If it is can be done by software, up to what extent OS will do?
Means decision of which page to replace will done by OS?
Is OS looking for multi-level paging?

[sorear]

The bug tracker is not a forum and this isn't even a related repository.

Page table walker is not in the OS. If it's software, it's non-OS software (e.g. M-mode trap handled in a M-mode monitor program that runs above Linux). Why do you keep asking? What are you trying to achieve?

As far as any OS knows, page tables are walked automatically.

[palmer-dabbelt]

I'm closing this: like @sorear said this isn't the right place to ask this question. [email protected] might be a better place to do it.