On 17/08/2016 19:20, Punit Agrawal wrote:

quoted

quoted

Having the ability to monitor the usage of guest TLB invalidations in
the host can be useful to diagnose performance issues on such systems.

Are there hardware performance counters for these operations?

That would have been ideal! There are PMU events defined for TLB
accesses and refills but unhelpfully none of them track maintenance
operations.

I guess the patches do make sense then. :)

Paolo