Re: [PATCH 3/7] x86/fpu/xstate: Add supervisor PASID state for ENQCMD feature

Thomas Gleixner
2020-04-26T11:17:25Z

Fenghua Yu <fenghua.yu@intel.com> writes:
> From: Yu-cheng Yu <yu-cheng.yu@intel.com>
>
> The IA32_PASID MSR is used when a task submits work via the ENQCMD
> instruction.

Is used?

> The per task MSR is stored in the task's supervisor FPU

per task MSR? Lot's of MSRs ....

> PASID state and is context switched by XSAVES/XRSTORS.