From: "Liang, Kan" <kan.liang@linux.intel.com>
To: Liuxiangdong <liuxiangdong5@huawei.com>,
lingshan.zhu@intel.com, like.xu.linux@gmail.com
Cc: ak@linux.intel.com, boris.ostrvsky@oracle.com, bp@alien8.de,
eranian@google.com, jmattson@google.com, joro@8bytes.org,
kvm@vger.kernel.org, linux-kernel@vger.kernel.org,
pbonzini@redhat.com, peterz@infradead.org, seanjc@google.com,
vkuznets@redhat.com, wanpengli@tencent.com, wei.w.wang@intel.com,
x86@kernel.org, Xiexiangyou <xiexiangyou@huawei.com>,
"Fangyi (Eric)" <eric.fangyi@huawei.com>
Subject: Re: [PATCH V8 00/18] KVM: x86/pmu: Add *basic* support to enable guest PEBS via DS
Date: Thu, 22 Jul 2021 09:08:12 -0400 [thread overview]
Message-ID: <4e990190-069e-4769-b0be-7db7d721f8a6@linux.intel.com> (raw)
In-Reply-To: <60F96A3F.3030703@huawei.com>
On 7/22/2021 8:53 AM, Liuxiangdong wrote:
> Hi，like and lingshan.
>
> We can use pebs on the Icelake by using "perf record -e $event:pp", but
> how can we get all the supported $event for the Icelake?
> Because it seems like that all the hardware event/software event/kernel
> pmu event listed by "perf list" can use ":pp" without error.
>
>
> By quering events list for Icelake("https://perfmon-events.intel.com/),
> we can use "perf record -e cpu/event=0xXX,unask=0xXX/pp"
> to enable sampling. There are some events with "PEBS：
> [PreciseEventingIP]" in "Additional Info" column. Are they the only
> supported
> precise events? Do those events which have "PEBS:[NonPreciseEventingIP]"
> in last column support PEBS?
>
Starts from Ice Lake, the extended PEBS feature is supported, which
extend the PEBS for all counters and all performance monitoring events
(both precise event and non-precise). You can sample any events with PEBS.
For details, please refer to the 18.9.1 extended PEBS in the latest SDM
vol3.
Thanks,
Kan
prev parent reply other threads:[~2021-07-22 13:08 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-16 8:53 [PATCH V8 00/18] KVM: x86/pmu: Add *basic* support to enable guest PEBS via DS Zhu Lingshan
2021-07-16 8:53 ` [PATCH V8 01/18] perf/core: Use static_call to optimize perf_guest_info_callbacks Zhu Lingshan
2021-07-21 11:57 ` Like Xu
2021-07-22 2:38 ` Zhu, Lingshan
2021-07-22 3:03 ` Zhu, Lingshan
2021-07-16 8:53 ` [PATCH V8 02/18] perf/x86/intel: Add EPT-Friendly PEBS for Ice Lake Server Zhu Lingshan
2021-07-16 8:53 ` [PATCH V8 03/18] perf/x86/intel: Handle guest PEBS overflow PMI for KVM guest Zhu Lingshan
2021-07-16 8:53 ` [PATCH V8 04/18] perf/x86/core: Pass "struct kvm_pmu *" to determine the guest values Zhu Lingshan
2021-07-16 8:53 ` [PATCH V8 05/18] KVM: x86/pmu: Set MSR_IA32_MISC_ENABLE_EMON bit when vPMU is enabled Zhu Lingshan
2021-07-16 8:53 ` [PATCH V8 06/18] KVM: x86/pmu: Introduce the ctrl_mask value for fixed counter Zhu Lingshan
2021-07-16 8:53 ` [PATCH V8 07/18] x86/perf/core: Add pebs_capable to store valid PEBS_COUNTER_MASK value Zhu Lingshan
2021-07-16 8:53 ` [PATCH V8 08/18] KVM: x86/pmu: Add IA32_PEBS_ENABLE MSR emulation for extended PEBS Zhu Lingshan
2021-07-16 8:53 ` [PATCH V8 09/18] KVM: x86/pmu: Reprogram PEBS event to emulate guest PEBS counter Zhu Lingshan
2021-07-16 8:53 ` [PATCH V8 10/18] KVM: x86/pmu: Adjust precise_ip to emulate Ice Lake guest PDIR counter Zhu Lingshan
2021-07-16 8:53 ` [PATCH V8 11/18] KVM: x86/pmu: Add IA32_DS_AREA MSR emulation to support guest DS Zhu Lingshan
2021-07-16 8:53 ` [PATCH V8 12/18] KVM: x86/pmu: Add PEBS_DATA_CFG MSR emulation to support adaptive PEBS Zhu Lingshan
2021-07-16 8:53 ` [PATCH V8 13/18] KVM: x86: Set PEBS_UNAVAIL in IA32_MISC_ENABLE when PEBS is enabled Zhu Lingshan
2021-07-16 8:53 ` [PATCH V8 14/18] KVM: x86/pmu: Move pmc_speculative_in_use() to arch/x86/kvm/pmu.h Zhu Lingshan
2021-07-16 8:53 ` [PATCH V8 15/18] KVM: x86/pmu: Disable guest PEBS temporarily in two rare situations Zhu Lingshan
2021-07-16 8:53 ` [PATCH V8 16/18] KVM: x86/pmu: Add kvm_pmu_cap to optimize perf_get_x86_pmu_capability Zhu Lingshan
2021-07-16 8:53 ` [PATCH V8 17/18] KVM: x86/cpuid: Refactor host/guest CPU model consistency check Zhu Lingshan
2021-07-16 8:53 ` [PATCH V8 18/18] KVM: x86/pmu: Expose CPUIDs feature bits PDCM, DS, DTES64 Zhu Lingshan
2021-07-16 17:02 ` [PATCH V8 00/18] KVM: x86/pmu: Add *basic* support to enable guest PEBS via DS Jim Mattson
2021-07-16 19:00 ` Liang, Kan
2021-07-16 21:07 ` Jim Mattson
2021-07-19 0:41 ` Liang, Kan
2021-07-21 12:10 ` Like Xu
2021-07-22 12:53 ` Liuxiangdong
2021-07-22 13:08 ` Liang, Kan [this message]
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