From: Joerg Roedel <joro@8bytes.org>
To: Jan Kiszka <jan.kiszka@siemens.com>
Cc: Avi Kivity <avi@redhat.com>,
linux-kernel@vger.kernel.org, kvm@vger.kernel.org,
Ingo Molnar <mingo@elte.hu>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Subject: Re: [PATCH v1 0/5] KVM in-guest performance monitoring
Date: Thu, 12 May 2011 15:11:30 +0200 [thread overview]
Message-ID: <20110512131130.GG8707@8bytes.org> (raw)
In-Reply-To: <4DCBACC7.8080000@siemens.com>
On Thu, May 12, 2011 at 11:47:51AM +0200, Jan Kiszka wrote:
> On 2011-05-12 11:33, Joerg Roedel wrote:
> > Anyway, I thought about a paravirt-approach instead of implementing a
> > real PMU... But there are certainly good reasons for both.
>
> Paravirt is taking away the pressure from CPU vendors to do their virt
> extensions properly - and doesn't help with unmodifiable OSes.
Seriously, I think such decisions should be technical only and not
political like that. The losers of such political decisions are always
the users because they don't get useful features that are technical
possible.
Regards,
Joerg
next prev parent reply other threads:[~2011-05-12 13:11 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-11 15:55 [PATCH v1 0/5] KVM in-guest performance monitoring Avi Kivity
2011-05-11 15:55 ` [PATCH v1 1/5] perf: add context parameter to perf_event overflow handler Avi Kivity
2011-06-03 14:41 ` Peter Zijlstra
2011-06-05 8:07 ` Avi Kivity
2011-05-11 15:55 ` [PATCH v1 2/5] x86, perf: add constraints for architectural PMU v1 Avi Kivity
2011-05-11 15:55 ` [PATCH v1 3/5] perf: export perf_event_refresh() to modules Avi Kivity
2011-05-11 15:55 ` [PATCH v1 4/5] KVM: Expose kvm_lapic_local_deliver() Avi Kivity
2011-05-11 15:55 ` [PATCH v1 5/5] KVM: Expose a version 1 architectural PMU to guests Avi Kivity
2011-05-17 19:41 ` Ingo Molnar
2011-05-18 9:03 ` Avi Kivity
2011-05-18 11:07 ` Ingo Molnar
2011-05-18 11:29 ` Peter Zijlstra
2011-05-18 11:57 ` Ingo Molnar
2011-05-18 11:32 ` Peter Zijlstra
2011-05-18 11:37 ` Avi Kivity
2011-05-18 12:35 ` Peter Zijlstra
2011-05-18 12:49 ` Avi Kivity
2011-06-03 14:41 ` Peter Zijlstra
2011-06-05 8:12 ` Avi Kivity
2011-06-03 14:41 ` Peter Zijlstra
2011-06-05 8:12 ` Avi Kivity
2011-05-12 9:33 ` [PATCH v1 0/5] KVM in-guest performance monitoring Joerg Roedel
2011-05-12 9:47 ` Jan Kiszka
2011-05-12 9:53 ` Avi Kivity
2011-05-12 13:11 ` Joerg Roedel [this message]
2011-05-12 13:23 ` Jan Kiszka
2011-05-12 13:43 ` Joerg Roedel
2011-05-12 13:31 ` Avi Kivity
2011-05-12 14:24 ` Joerg Roedel
2011-05-12 14:37 ` Avi Kivity
2011-05-12 14:45 ` Avi Kivity
2011-05-13 12:34 ` Joerg Roedel
2011-05-12 9:51 ` Avi Kivity
2011-05-12 13:06 ` Joerg Roedel
2011-05-12 13:38 ` Avi Kivity
2011-05-12 14:29 ` Joerg Roedel
2011-05-17 9:52 ` Avi Kivity
2011-06-01 9:45 ` Avi Kivity
2011-06-01 10:26 ` Peter Zijlstra
2011-06-01 11:26 ` Avi Kivity
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