Hi,

>From the page https://docs.sel4.systems/DebuggingGuide.html (section
Userspace debugging), I know we can debug userspace process by command
below:

---------------------------- cmd example start
----------------------------------------
gdb ./dynamic-2
Reading symbols from ./dynamic-2...done.
(gdb) target remote :1234
Remote debugging using :1234
0x000000000000fff0 in ?? ()
(gdb) break main
Breakpoint 1 at 0x402011: file sel4-tutorials-manifest/dynamic-2/main.c,
line 161.
(gdb) c
Continuing.

Breakpoint 1, main () at sel4-tutorials-manifest/dynamic-2/main.c:161
161
(gdb)
---------------------------- cmd example end
----------------------------------------

It works for normal userspace process (such as the example code in
tutorials:  https://docs.sel4.systems/Tutorials/dynamic-2.html ).

But when I want to debug the userspace process for the code in the
tutorials page https://docs.sel4.systems/Tutorials/camkes-vm-linux.html
(one virtual machine in seL4), I cannot catch the breakpoints.

So can you help me to explain why I cannot catch the breakpoint? and can we
debug the vmm create process with qemu/gdb?

Thanks.
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