Kernel.nw: start FAQ

Author: aryx

kernel/Kernel.nw

@@ -2691,6 +2691,24 @@ sysnop(ulong*)
 %  many concepts aggregated: device, filesystem, server
 
 
+\subsection{FAQ}
+
+% trace of syscall through the stack
+
+\subsection{NSFAQ}
+
+% HVector is specific address, but systab is another one, how
+% force systab to be HVector?
+% actually systab is not exception table but syscall table, different concepts
+
+% Why kernel vs user  virtual space divide? why can't have user-space to
+% be all of 4GB virtual address space and have kernel be different?
+% (I think xv6 RISCV actually does that)
+
+% can we have a page fault inside a page fault handler? Does kernel
+% rely on TLB and MMU to access its own data structure? Can kernel memory
+% be swapped?
+
 \section{Book structure}
 
 %claude: