​hi.
i'm recently worked on sel4 with camkes framework. when i compile rumprun_hello 
on x86_64 platform its compiled and build correctly but when run with qemu by 
./simulate script, program crashed with this errors:
simple_get_extended_bootinfo_length@simple.h:600 
simple_get_extended_bootinfo_length not implemented
FAULT HANDLER: data fault from hello.hello_0_control (ID 0x1) on address 0x8, 
pc = 0x402b7f, fsr = 0x6
FAULT HANDLER: Register dump:
FAULT HANDLER: rip :0x402b7f
,
.
.
so i found that this method not implemented yet so i return 0 in this method 
and resolved. 
for second problem that cause failure if trace program and i found that in 
"init rumprun" process the program failed in the 
/projects/sel4runtime/include/sel4_arch/x86_64/sel4runtime/thread_arch.h file 
and sel4runtime_set_tls_base method.
so i read git log and in recently commit your team use sel4runtime for thread 
TLS, so when we run rumprun_hello, the program failed in 
sel4runtime_set_tls_base method. can you help me fix this bug?
 thanks for your attention.

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