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Re: [PATCH 8/8] x86/intel_rdt: rmdir,umount and hotcpu updates for MBA

From Thomas Gleixner <tglx@linutronix.de>
Newsgroups linux.kernel
Subject Re: [PATCH 8/8] x86/intel_rdt: rmdir,umount and hotcpu updates for MBA
Date 2017-01-16 17:20 +0100
Message-ID <t0iaJ-2OC-13@gated-at.bofh.it> (permalink)
References <sYaqZ-5m6-3@gated-at.bofh.it> <sYar1-5m6-71@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On Tue, 10 Jan 2017, Vikas Shivappa wrote:

> During rmdir only reset the ctrl values for the rdtgroup's closid. This
> is done so that that next time when the closid is reused they dont
> reflect old values.

How on earth is that related to MBA?

> Remove the closid update during cpuonline in cqm as its
> already in the CAT code. Since both cqm and CAT want the rmid and closid
> to be zero when cpu is online, remove the PQR MSR write to zero during
> cpuonline because the MSRs are at zero after cpu reset and also during

Are you sure that the MSRs are zero when the cpu goes offline and then
online again? That's not a reset.

Thanks,

	tglx

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Thread

[PATCH 0/8 V1] x86/intel_rdt: Memory b/w Allocation support Vikas Shivappa <vikas.shivappa@linux.intel.com> - 2017-01-10 20:40 +0100
  [PATCH 7/8] x86/intel_rdt/mba: Add schemata file support for MBA Vikas Shivappa <vikas.shivappa@linux.intel.com> - 2017-01-10 20:40 +0100
    Re: [PATCH 7/8] x86/intel_rdt/mba: Add schemata file support for  MBA Thomas Gleixner <tglx@linutronix.de> - 2017-01-16 17:10 +0100
      Re: [PATCH 7/8] x86/intel_rdt/mba: Add schemata file support for  MBA Shivappa Vikas <vikas.shivappa@intel.com> - 2017-01-18 02:10 +0100
  [PATCH 5/8] x86/intel_rct/mba: Add MBA structures and initialize MBA Vikas Shivappa <vikas.shivappa@linux.intel.com> - 2017-01-10 20:40 +0100
    Re: [PATCH 5/8] x86/intel_rct/mba: Add MBA structures and initialize  MBA Thomas Gleixner <tglx@linutronix.de> - 2017-01-16 15:10 +0100
      Re: [PATCH 5/8] x86/intel_rct/mba: Add MBA structures and initialize  MBA Shivappa Vikas <vikas.shivappa@intel.com> - 2017-01-18 02:00 +0100
  [PATCH 8/8] x86/intel_rdt: rmdir,umount and hotcpu updates for MBA Vikas Shivappa <vikas.shivappa@linux.intel.com> - 2017-01-10 20:40 +0100
    Re: [PATCH 8/8] x86/intel_rdt: rmdir,umount and hotcpu updates for  MBA Thomas Gleixner <tglx@linutronix.de> - 2017-01-16 17:20 +0100
      Re: [PATCH 8/8] x86/intel_rdt: rmdir,umount and hotcpu updates for  MBA Shivappa Vikas <vikas.shivappa@intel.com> - 2017-01-23 21:20 +0100

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