Re: [tip:perf/urgent] perf/x86/mbm: Implement RMID recycling

From: Matt Fleming
Date: Wed Mar 23 2016 - 16:59:14 EST

On Mon, 21 Mar, at 11:27:55AM, Vikas Shivappa wrote:
> The init_mbm_sample calls the update_sample to read the MSR in IPI .. Since
> the count is also in IPI , they should not trash each other ?
> Basically all the MSR read/writes are in high irql , except for the mbm
> overflow timer and read calls which holds an irqsave spinlock.

Good point! This should be fine.