Re: [RFC PATCH 0/7] Add support for monitoring guest TLB operations

From	Paolo Bonzini <pbonzini@redhat.com>
Newsgroups	linux.kernel
Subject	Re: [RFC PATCH 0/7] Add support for monitoring guest TLB operations
Date	2016-08-18 09:10 +0200
Message-ID	<s7pCG-4NL-17@gated-at.bofh.it> (permalink)
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On 17/08/2016 19:20, Punit Agrawal wrote:
> > > 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

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[RFC PATCH 0/7] Add support for monitoring guest TLB operations Punit Agrawal <punit.agrawal@arm.com> - 2016-08-16 12:50 +0200
  [RFC PATCH 2/7] KVM: Track the pid of the VM process Punit Agrawal <punit.agrawal@arm.com> - 2016-08-16 12:50 +0200
  [RFC PATCH 1/7] perf/trace: Add notification for perf trace events Punit Agrawal <punit.agrawal@arm.com> - 2016-08-16 12:50 +0200
  [RFC PATCH 6/7] arm64: KVM: Handle trappable TLB instructions Punit Agrawal <punit.agrawal@arm.com> - 2016-08-16 12:50 +0200
    Re: [RFC PATCH 6/7] arm64: KVM: Handle trappable TLB instructions Will Deacon <will.deacon@arm.com> - 2016-08-19 17:20 +0200
      Re: [RFC PATCH 6/7] arm64: KVM: Handle trappable TLB instructions Punit Agrawal <punit.agrawal@arm.com> - 2016-08-24 12:50 +0200
  [RFC PATCH 3/7] KVM: arm/arm64: Register perf trace event notifier Punit Agrawal <punit.agrawal@arm.com> - 2016-08-16 12:50 +0200
  Re: [RFC PATCH 0/7] Add support for monitoring guest TLB operations Paolo Bonzini <pbonzini@redhat.com> - 2016-08-17 18:00 +0200
    Re: [RFC PATCH 0/7] Add support for monitoring guest TLB operations Punit Agrawal <punit.agrawal@arm.com> - 2016-08-17 19:10 +0200
      Re: [RFC PATCH 0/7] Add support for monitoring guest TLB operations Paolo Bonzini <pbonzini@redhat.com> - 2016-08-17 19:10 +0200
        Re: [RFC PATCH 0/7] Add support for monitoring guest TLB operations Punit Agrawal <punit.agrawal@arm.com> - 2016-08-17 19:30 +0200
          Re: [RFC PATCH 0/7] Add support for monitoring guest TLB operations Paolo Bonzini <pbonzini@redhat.com> - 2016-08-18 09:10 +0200

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