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

[Roland McGrath]

> > Suresh's patch puts this value in the xsave block, in what Suresh calls
> > "sw_usable_bytes".  See the asm/ptrace-abi.h comment in the patch you
> > signed off on.
> >
> > How is that not sufficient?  If it is indeed not sufficient to usefully
> > interpret the xsave block, then how could an xsave block in a core dump
> > file ever possibly be examined if it might not have been generated on the
> > same system and kernel where the debugger is doing the examination?  If
> > the NT_X86_XSTATE note as implemented in Suresh's patch is indeed not
> > entirely self-contained in this way, then NAK on that new note format.
> > 
> 
> I use it when reading core dump, which doesn't involve a system call.
> I can analyze it on a totally different machine.

You did not answer any of my questions.
Perhaps Suresh can be more helpful in explaining the situation.


Thanks,
Roland
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