Re: [RFC PATCH 23/23] x86/process: Reset hardware history in context switch

Ricardo Neri
2022-10-02T21:56:13Z

On Tue, Sep 27, 2022 at 02:53:29PM +0200, Peter Zijlstra wrote:
> On Fri, Sep 09, 2022 at 04:12:05PM -0700, Ricardo Neri wrote:
> > Reset the classification history of the current task when switching to
> > the next task. Hardware will start anew the classification of the next
> > running task.
>
> Please quantify the cost of this HRESET instruction.

Sure Peter. I will.

Thanks and BR,
Ricardo