From: Like Xu <like.xu.linux@gmail.com>
To: Liuxiangdong <liuxiangdong5@huawei.com>, lingshan.zhu@intel.com
Cc: ak@linux.intel.com, bp@alien8.de, eranian@google.com,
jmattson@google.com, joro@8bytes.org, kan.liang@linux.intel.com,
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,
weijiang.yang@intel.com, x86@kernel.org,
"Fangyi (Eric)" <eric.fangyi@huawei.com>,
Xiexiangyou <xiexiangyou@huawei.com>
Subject: Re: [PATCH V7 00/18] KVM: x86/pmu: Add *basic* support to enable guest PEBS via DS
Date: Mon, 12 Jul 2021 18:34:17 +0800 [thread overview]
Message-ID: <19b7db9e-ccde-ca1f-3e17-09e718a1f3a4@gmail.com> (raw)
In-Reply-To: <60EB9CD8.6080608@huawei.com>
On 12/7/2021 9:37 am, Liuxiangdong wrote:
> Hi， Lingshan.
>
> We can use basic pebs for KVM Guest on ICX by this patches set. Will we
> consider supporting "perf mem" for KVM Guest?
>
I suggest we can enable more advanced PEBS features
after the basic support hits the mainline.
> AFAIK, the load latency facility requires processor supporting PEBS.
> Besides, it needs MSR_PEBS_LD_LAT_THRESHOLD
> msr (3F6H) to specify the desired latency threshold. How about
> passthrough this msr to Guest?
>
> Thanks!
> Xiangdong Liu
>
>
prev parent reply other threads:[~2021-07-12 10:34 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-22 9:42 [PATCH V7 00/18] KVM: x86/pmu: Add *basic* support to enable guest PEBS via DS Zhu Lingshan
2021-06-22 9:42 ` [PATCH V7 01/18] perf/core: Use static_call to optimize perf_guest_info_callbacks Zhu Lingshan
2021-07-02 11:22 ` Peter Zijlstra
2021-07-02 16:00 ` Joe Perches
2021-07-02 16:19 ` Peter Zijlstra
2021-07-02 16:42 ` Joe Perches
2021-07-02 16:38 ` Mark Rutland
2021-07-02 16:56 ` Joe Perches
2021-07-08 8:53 ` Zhu Lingshan
2021-06-22 9:42 ` [PATCH V7 02/18] perf/x86/intel: Add EPT-Friendly PEBS for Ice Lake Server Zhu Lingshan
2021-06-22 9:42 ` [PATCH V7 03/18] perf/x86/intel: Handle guest PEBS overflow PMI for KVM guest Zhu Lingshan
2021-07-02 11:28 ` Peter Zijlstra
2021-07-08 13:39 ` Zhu, Lingshan
2021-06-22 9:42 ` [PATCH V7 04/18] perf/x86/core: Pass "struct kvm_pmu *" to determine the guest values Zhu Lingshan
2021-06-22 9:42 ` [PATCH V7 05/18] KVM: x86/pmu: Set MSR_IA32_MISC_ENABLE_EMON bit when vPMU is enabled Zhu Lingshan
2021-06-22 9:42 ` [PATCH V7 06/18] KVM: x86/pmu: Introduce the ctrl_mask value for fixed counter Zhu Lingshan
2021-06-22 9:42 ` [PATCH V7 07/18] x86/perf/core: Add pebs_capable to store valid PEBS_COUNTER_MASK value Zhu Lingshan
2021-06-22 9:42 ` [PATCH V7 08/18] KVM: x86/pmu: Add IA32_PEBS_ENABLE MSR emulation for extended PEBS Zhu Lingshan
2021-06-22 9:42 ` [PATCH V7 09/18] KVM: x86/pmu: Reprogram PEBS event to emulate guest PEBS counter Zhu Lingshan
2021-06-22 9:42 ` [PATCH V7 10/18] KVM: x86/pmu: Adjust precise_ip to emulate Ice Lake guest PDIR counter Zhu Lingshan
2021-06-22 9:42 ` [PATCH V7 11/18] KVM: x86/pmu: Add IA32_DS_AREA MSR emulation to support guest DS Zhu Lingshan
2021-07-02 11:52 ` Peter Zijlstra
2021-07-08 8:52 ` Zhu, Lingshan
2021-06-22 9:43 ` [PATCH V7 12/18] KVM: x86/pmu: Add PEBS_DATA_CFG MSR emulation to support adaptive PEBS Zhu Lingshan
2021-06-22 9:43 ` [PATCH V7 13/18] KVM: x86: Set PEBS_UNAVAIL in IA32_MISC_ENABLE when PEBS is enabled Zhu Lingshan
2021-06-22 9:43 ` [PATCH V7 14/18] KVM: x86/pmu: Move pmc_speculative_in_use() to arch/x86/kvm/pmu.h Zhu Lingshan
2021-06-22 9:43 ` [PATCH V7 15/18] KVM: x86/pmu: Disable guest PEBS temporarily in two rare situations Zhu Lingshan
2021-07-02 12:46 ` Peter Zijlstra
2021-07-08 8:52 ` Zhu, Lingshan
2021-06-22 9:43 ` [PATCH V7 16/18] KVM: x86/pmu: Add kvm_pmu_cap to optimize perf_get_x86_pmu_capability Zhu Lingshan
2021-06-22 9:43 ` [PATCH V7 17/18] KVM: x86/cpuid: Refactor host/guest CPU model consistency check Zhu Lingshan
2021-06-22 9:43 ` [PATCH V7 18/18] KVM: x86/pmu: Expose CPUIDs feature bits PDCM, DS, DTES64 Zhu Lingshan
2021-06-25 9:40 ` [PATCH V7 00/18] KVM: x86/pmu: Add *basic* support to enable guest PEBS via DS Liuxiangdong
2021-06-25 9:46 ` Zhu, Lingshan
2021-06-28 7:49 ` Wang, Wei W
2021-06-28 7:53 ` Zhu, Lingshan
2021-07-02 12:49 ` Peter Zijlstra
2021-07-12 1:37 ` Liuxiangdong
2021-07-12 10:34 ` Like Xu [this message]
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