RE: [patch] x86: ptrace and core-dump extensions for xstate

[Lu, Hongjiu]

> 
> > Gdb calls cpuid during startup time to find out the actual xstate_size
> > on the target machine. It has to be reliable. There is no need for
> > another ptrace option. But we should document it clearly in ABI.
> 
> As I said, I think that is an extremely poor API choice.  There is no such
> arcane requirement in the API now, so we do not have add one.
> 

That is how processor works.


H.J.
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