Hello
There is code in ptlhwdef.h

// PTLsim's internal memory related variables
extern W64 PTLSIM_RAM_PHYSADDR;

#define PTLSIM_RAM_SIZE 128*1024*1024

Is this code useful or obsolete? I don't find it is used elsewhere
meaningfully. Does PTLsim needs its own ram?

Further, can you give some pointers on things like  RIP and meanings of
symbols such as mfnlo:28, use64:1, kernel:1, padlo:2, mfnhi:28, df:1,
padhi:3



Thanks and Regards
Sparsh Mittal
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