From: Luwei Kang <luwei.kang@intel.com>
To: kvm@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: pbonzini@redhat.com, rkrcmar@redhat.com,
sean.j.christopherson@intel.com, vkuznets@redhat.com,
wanpengli@tencent.com, jmattson@google.com, joro@8bytes.org,
tglx@linutronix.de, mingo@redhat.com, bp@alien8.de,
hpa@zytor.com, x86@kernel.org, ak@linux.intel.com,
thomas.lendacky@amd.com, peterz@infradead.org, acme@kernel.org,
mark.rutland@arm.com, alexander.shishkin@linux.intel.com,
jolsa@redhat.com, namhyung@kernel.org,
Luwei Kang <luwei.kang@intel.com>
Subject: [PATCH v1 0/8] PEBS enabling in KVM guest
Date: Sun, 27 Oct 2019 19:11:09 -0400 [thread overview]
Message-ID: <1572217877-26484-1-git-send-email-luwei.kang@intel.com> (raw)
Intel new hardware introduces some Precise Event-Based Sampling(PEBS)
extensions that output the PEBS record to Intel PT stream instead of
DS area. The PEBS record will be packaged in a specific format when
outputting to Intel PT. This patch set will enable PEBS functionality
in KVM Guest by PEBS output to Intel PT.
The patch 1 introduce a MSRs "base" parameter that use for get the
kvm_pmc structure by New MSR_RELOAD_FIXED_CTRx like get_gp_pmc()
function. The patch 2 implement the PEBS MSRs read/write emulation.
Patch 5/6/7 expose some capabilities(CPUID, MSRs) to KVM guest which
relate with PEBS feature. Patch 3 introduces "pebs" parameter to
allocate a perf event counter from host perf event framework.
The counter using for PEBS event should be disabled before VM-entry
in the previous platform, patch 4 skip this operation when PEBS is
enabled in KVM guest. Patch 8 has some code changes in native that to
make the aux_event only be needed for a non-kernel event(the couner
allocate by KVM is kernel event).
Luwei Kang (8):
KVM: x86: Add base address parameter for get_fixed_pmc function
KVM: x86: PEBS output to Intel PT MSRs emulation
KVM: x86: Allocate performance counter for PEBS event
KVM: x86: Aviod clear the PEBS counter when PEBS enabled in guest
KVM: X86: Expose PDCM cpuid to guest
KVM: X86: MSR_IA32_PERF_CAPABILITIES MSR emulation
KVM: x86: Expose PEBS feature to guest
perf/x86: Add event owner check when PEBS output to Intel PT
arch/x86/events/core.c | 3 +-
arch/x86/events/intel/core.c | 19 ++++++----
arch/x86/events/perf_event.h | 2 +-
arch/x86/include/asm/kvm_host.h | 7 ++++
arch/x86/include/asm/msr-index.h | 9 +++++
arch/x86/include/asm/perf_event.h | 5 ++-
arch/x86/kvm/cpuid.c | 3 +-
arch/x86/kvm/pmu.c | 23 ++++++++----
arch/x86/kvm/pmu.h | 10 ++---
arch/x86/kvm/pmu_amd.c | 2 +-
arch/x86/kvm/svm.c | 12 ++++++
arch/x86/kvm/vmx/capabilities.h | 25 +++++++++++++
arch/x86/kvm/vmx/pmu_intel.c | 79 +++++++++++++++++++++++++++++++++++----
arch/x86/kvm/vmx/vmx.c | 19 +++++++++-
arch/x86/kvm/x86.c | 22 ++++++++---
include/linux/perf_event.h | 1 +
kernel/events/core.c | 2 +-
17 files changed, 201 insertions(+), 42 deletions(-)
--
1.8.3.1
next reply other threads:[~2019-10-27 11:12 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-27 23:11 Luwei Kang [this message]
2019-10-27 23:11 ` [PATCH v1 1/8] KVM: x86: Add base address parameter for get_fixed_pmc function Luwei Kang
2019-10-27 23:11 ` [PATCH v1 2/8] KVM: x86: PEBS output to Intel PT MSRs emulation Luwei Kang
2019-10-29 15:02 ` Peter Zijlstra
2019-10-30 4:06 ` Kang, Luwei
2019-10-27 23:11 ` [PATCH v1 3/8] KVM: x86: Allocate performance counter for PEBS event Luwei Kang
2019-10-29 14:46 ` Peter Zijlstra
2019-10-30 4:06 ` Kang, Luwei
2019-10-30 6:42 ` Alexander Shishkin
2019-10-30 6:49 ` Kang, Luwei
2019-10-30 9:51 ` Peter Zijlstra
2019-10-30 9:50 ` Peter Zijlstra
2019-10-30 9:49 ` Peter Zijlstra
2019-10-30 13:41 ` Alexander Shishkin
2019-10-31 11:10 ` Kang, Luwei
2019-11-06 7:44 ` Kang, Luwei
2019-10-27 23:11 ` [PATCH v1 4/8] KVM: x86: Aviod clear the PEBS counter when PEBS enabled in guest Luwei Kang
2019-10-29 14:55 ` Peter Zijlstra
2019-10-30 4:06 ` Kang, Luwei
2019-10-27 23:11 ` [PATCH v1 5/8] KVM: X86: Expose PDCM cpuid to guest Luwei Kang
2019-10-27 23:11 ` [PATCH v1 6/8] KVM: X86: MSR_IA32_PERF_CAPABILITIES MSR emulation Luwei Kang
2019-10-27 23:11 ` [PATCH v1 7/8] KVM: x86: Expose PEBS feature to guest Luwei Kang
2019-10-29 15:05 ` Peter Zijlstra
2019-10-30 4:07 ` Kang, Luwei
2019-10-30 9:52 ` Peter Zijlstra
2019-10-31 4:21 ` Kang, Luwei
2019-10-27 23:11 ` [PATCH v1 8/8] perf/x86: Add event owner check when PEBS output to Intel PT Luwei Kang
2019-10-29 15:13 ` Peter Zijlstra
2019-10-30 4:07 ` Kang, Luwei
2019-10-30 9:54 ` Peter Zijlstra
2019-10-31 6:55 ` Kang, Luwei
2019-10-31 7:39 ` Alexander Shishkin
2019-10-31 10:31 ` Kang, Luwei
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