[PATCH 02/31] x86, fpu: add placeholder for Processor Trace XSAVE state

From: Dave Hansen There is an XSAVE state component for Intel Processor Trace (PT). But, we do not currently use it. We add a placeholder in the code for it so it is not a mystery and also so we do not need an explicit enum initialization for Protection Keys in a moment. Why don't we use it?

[PATCH 02/31] x86, fpu: add placeholder for Processor Trace XSAVE state

From: Dave Hansen There is an XSAVE state component for Intel Processor Trace (PT). But, we do not currently use it. We add a placeholder in the code for it so it is not a mystery and also so we do not need an explicit enum initialization for Protection Keys in a moment. Why don't we use it?