Re: [PATCH v2 2/4] Add enabling of the R3 MWAIT during boot for KNL
From: Thomas Gleixner
Date: Wed Oct 12 2016 - 09:37:52 EST
On Wed, 12 Oct 2016, Grzegorz Andrejczuk wrote:
> + /*
> + * Setting ring 3 MONITOR/MWAIT for all threads
> + * when CPU is Xeon Phi Family x200
> + * This can be disabled with phir3mwait=disable cmdline switch.
> + * We preserve the reserved values and set only 2nd bit.
> + * Ref:
> + * https://software.intel.com/en-us/blogs/2016/10/06/intel-xeon-phi-product-family-x200-knl-user-mode-ring-3-monitor-and-mwait
Please don't put links like this into comments. They are stale before this
hits Linus tree.