From: Boris Ostrovsky <boris.ostrovsky@oracle.com>
To: Jan Beulich <JBeulich@suse.com>
Cc: kevin.tian@intel.com, keir@xen.org,
suravee.suthikulpanit@amd.com, andrew.cooper3@citrix.com,
tim@xen.org, dietmar.hahn@ts.fujitsu.com,
xen-devel@lists.xen.org, Aravind.Gopalakrishnan@amd.com,
jun.nakajima@intel.com, dgdegra@tycho.nsa.gov
Subject: Re: [PATCH v12 for-xen-4.5 16/20] x86/VPMU: Handle PMU interrupts for PV guests
Date: Thu, 02 Oct 2014 09:53:09 -0400 [thread overview]
Message-ID: <542D58C5.8030707@oracle.com> (raw)
In-Reply-To: <542D1327020000780003BCA9@mail.emea.novell.com>
On 10/02/2014 02:56 AM, Jan Beulich wrote:
>
> And in the end, considering that a model where there's both a
> local and a global profiler active, one sample referring to
> hypervisor context could easily result in two events: One
> (with the hypervisor register state) to the global profiled, and
> a second (with the surrounding guest register state) to the
> guest one. But iiuc your current implementation doesn't allow
> that (yet).
Right, it doesn't.
And I don't think this will work since PMU registers need to be
controlled by one domain only (either dom0 or the guest) for each
profiling session. If we send the interrupt to both one of them will
likely get confused about why it is getting the interrupt that it didn't
request.
-boris
next prev parent reply other threads:[~2014-10-02 13:53 UTC|newest]
Thread overview: 92+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-25 19:28 [PATCH v12 for-xen-4.5 00/20] x86/PMU: Xen PMU PV(H) support Boris Ostrovsky
2014-09-25 19:28 ` [PATCH v12 for-xen-4.5 01/20] common/symbols: Export hypervisor symbols to privileged guest Boris Ostrovsky
2014-09-26 14:58 ` Konrad Rzeszutek Wilk
2014-09-26 15:10 ` Jan Beulich
2014-09-26 16:49 ` Konrad Rzeszutek Wilk
2014-09-29 6:43 ` Jan Beulich
2014-09-29 13:29 ` Boris Ostrovsky
2014-09-29 13:47 ` Jan Beulich
2014-09-29 14:16 ` Boris Ostrovsky
2014-09-29 14:33 ` Jan Beulich
2014-09-26 21:43 ` Daniel De Graaf
2014-09-26 22:12 ` Boris Ostrovsky
2014-09-25 19:28 ` [PATCH v12 for-xen-4.5 02/20] x86/VPMU: Manage VPMU_CONTEXT_SAVE flag in vpmu_save_force() Boris Ostrovsky
2014-09-26 14:49 ` Konrad Rzeszutek Wilk
2014-09-25 19:28 ` [PATCH v12 for-xen-4.5 03/20] x86/VPMU: Set MSR bitmaps only for HVM/PVH guests Boris Ostrovsky
2014-09-26 14:59 ` Konrad Rzeszutek Wilk
2014-09-25 19:28 ` [PATCH v12 for-xen-4.5 04/20] x86/VPMU: Make vpmu macros a bit more efficient Boris Ostrovsky
2014-09-25 19:28 ` [PATCH v12 for-xen-4.5 05/20] intel/VPMU: Clean up Intel VPMU code Boris Ostrovsky
2014-09-25 19:28 ` [PATCH v12 for-xen-4.5 06/20] vmx: Merge MSR management routines Boris Ostrovsky
2014-09-26 20:48 ` Tian, Kevin
2014-09-25 19:28 ` [PATCH v12 for-xen-4.5 07/20] x86/VPMU: Handle APIC_LVTPC accesses Boris Ostrovsky
2014-09-25 19:28 ` [PATCH v12 for-xen-4.5 08/20] intel/VPMU: MSR_CORE_PERF_GLOBAL_CTRL should be initialized to zero Boris Ostrovsky
2014-09-25 19:28 ` [PATCH v12 for-xen-4.5 09/20] x86/VPMU: Add public xenpmu.h Boris Ostrovsky
2014-09-26 20:49 ` Tian, Kevin
2014-09-29 14:17 ` Jan Beulich
2014-09-29 14:30 ` Jan Beulich
2014-09-29 15:19 ` Boris Ostrovsky
2014-09-29 15:41 ` Jan Beulich
2014-09-29 15:48 ` Boris Ostrovsky
2014-09-29 14:57 ` Boris Ostrovsky
2014-09-29 15:40 ` Jan Beulich
2014-09-29 15:56 ` Boris Ostrovsky
2014-09-25 19:28 ` [PATCH v12 for-xen-4.5 10/20] x86/VPMU: Make vpmu not HVM-specific Boris Ostrovsky
2014-09-25 19:28 ` [PATCH v12 for-xen-4.5 11/20] x86/VPMU: Interface for setting PMU mode and flags Boris Ostrovsky
2014-09-26 21:04 ` Tian, Kevin
2014-09-26 21:24 ` Boris Ostrovsky
2014-09-26 22:00 ` Daniel De Graaf
2014-09-26 22:26 ` Boris Ostrovsky
2014-09-29 13:25 ` Dietmar Hahn
2014-09-29 13:56 ` Boris Ostrovsky
2014-09-29 14:03 ` Dietmar Hahn
2014-09-29 13:59 ` Jan Beulich
2014-09-29 14:05 ` Dietmar Hahn
2014-09-29 15:14 ` Jan Beulich
2014-09-29 15:34 ` Boris Ostrovsky
2014-10-01 0:48 ` Tian, Kevin
2014-10-01 0:56 ` Boris Ostrovsky
2014-09-25 19:28 ` [PATCH v12 for-xen-4.5 12/20] x86/VPMU: Initialize PMU for PV(H) guests Boris Ostrovsky
2014-09-26 22:16 ` Daniel De Graaf
2014-09-26 22:23 ` Boris Ostrovsky
2014-09-29 15:25 ` Jan Beulich
2014-09-29 15:41 ` Boris Ostrovsky
2014-09-29 15:42 ` Jan Beulich
2014-09-29 16:04 ` Boris Ostrovsky
2014-09-29 16:10 ` Jan Beulich
2014-10-01 0:16 ` Tian, Kevin
2014-09-25 19:28 ` [PATCH v12 for-xen-4.5 13/20] x86/VPMU: Save VPMU state for PV guests during context switch Boris Ostrovsky
2014-09-29 15:52 ` Jan Beulich
2014-09-25 19:28 ` [PATCH v12 for-xen-4.5 14/20] x86/VPMU: When handling MSR accesses, leave fault injection to callers Boris Ostrovsky
2014-09-25 19:28 ` [PATCH v12 for-xen-4.5 15/20] x86/VPMU: Add support for PMU register handling on PV guests Boris Ostrovsky
2014-09-26 16:34 ` Konrad Rzeszutek Wilk
2014-09-26 16:44 ` Boris Ostrovsky
2014-09-26 16:49 ` Konrad Rzeszutek Wilk
2014-09-29 16:04 ` Jan Beulich
2014-10-01 0:17 ` Tian, Kevin
2014-09-25 19:28 ` [PATCH v12 for-xen-4.5 16/20] x86/VPMU: Handle PMU interrupts for " Boris Ostrovsky
2014-09-26 22:09 ` Daniel De Graaf
2014-09-30 8:11 ` Jan Beulich
2014-09-30 15:07 ` Boris Ostrovsky
2014-09-30 15:44 ` Jan Beulich
2014-09-30 16:37 ` Boris Ostrovsky
2014-10-01 6:49 ` Jan Beulich
2014-10-01 12:53 ` Boris Ostrovsky
2014-10-01 13:18 ` Jan Beulich
2014-10-01 14:08 ` Boris Ostrovsky
2014-10-01 14:26 ` Jan Beulich
2014-10-01 18:06 ` Boris Ostrovsky
2014-10-02 6:56 ` Jan Beulich
2014-10-02 13:53 ` Boris Ostrovsky [this message]
2014-09-25 19:28 ` [PATCH v12 for-xen-4.5 17/20] x86/VPMU: Merge vpmu_rdmsr and vpmu_wrmsr Boris Ostrovsky
2014-09-30 8:13 ` Jan Beulich
2014-09-25 19:28 ` [PATCH v12 for-xen-4.5 18/20] x86/VPMU: Add privileged PMU mode Boris Ostrovsky
2014-09-30 8:18 ` Jan Beulich
2014-09-30 15:16 ` Boris Ostrovsky
2014-09-25 19:28 ` [PATCH v12 for-xen-4.5 19/20] x86/VPMU: NMI-based VPMU support Boris Ostrovsky
2014-09-30 8:37 ` Jan Beulich
2014-10-01 0:18 ` Boris Ostrovsky
2014-10-01 7:32 ` Jan Beulich
2014-09-25 19:28 ` [PATCH v12 for-xen-4.5 20/20] x86/VPMU: Move VPMU files up from hvm/ directory Boris Ostrovsky
2014-09-30 8:40 ` Jan Beulich
2014-09-26 17:03 ` [PATCH v12 for-xen-4.5 00/20] x86/PMU: Xen PMU PV(H) support Konrad Rzeszutek Wilk
2014-09-29 13:28 ` Dietmar Hahn
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