From mboxrd@z Thu Jan 1 00:00:00 1970 From: Wei Huang Subject: [PATCH V3 0/4] KVM vPMU support for AMD CPUs Date: Sat, 18 Apr 2015 02:23:48 -0400 Message-ID: <1429338232-11938-1-git-send-email-wei@redhat.com> Cc: gleb@kernel.org, pbonzini@redhat.com, rkrcmar@redhat.com, joro@8bytes.org To: kvm@vger.kernel.org Return-path: Received: from mx1.redhat.com ([209.132.183.28]:52580 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750818AbbDRGX4 (ORCPT ); Sat, 18 Apr 2015 02:23:56 -0400 Sender: kvm-owner@vger.kernel.org List-ID: Currently KVM only supports vPMU for Intel CPUs. This patchset enables KVM vPMU support for AMD platform by creating a common PMU interface for x86. By refractoring, PMU related MSR accesses from guest VMs are dispatched to corresponding functions defined in arch specific files. V3: * Rebase the code to the latest of KVM tree (queue branch); * Branch out the Intel specific code from pmu.c to pmu_intel.c, in order to reflect the change history more accurately; * Name the parameters/variables more consistently (use msr, idx, pmc_idx) across files; * Fix issues (whitespaces, macro names, ...) based on Radim's V2 comments; * Fix the MSR_K7_PERFCTRn and MSR_K7_EVNTSELn access code (in patch 4); V2: * Create a generic pmu.c file which is shared by Intel and AMD CPUs; * pmu.c code becomes part of kvm.ko module. Similarly pmu_intel.c and pmu_amd.c are linked to kvm-intel.ko and kvm-amd.ko respectively; * Re-define kvm_pmu_ops function pointers. Per Radim Krcmar's comments, a large portion of Intel vPMU code are now consolidated and moved to pmu.c; * Polish pmu_amd.c code to comply with new definition of kvm_pmu_ops; V1: * Adopt the file layout suggested by Radim Krcmar * Link arch module with its specific PMU file RFC: * Initial version for RFC Wei Huang (4): KVM: x86/vPMU: Define kvm_pmu_ops to support vPMU function dispatch KVM: x86/vPMU: Create vPMU interface for VMX and SVM KVM: x86/vPMU: Implement AMD vPMU code for KVM KVM: x86/vPMU: Enable PMU handling for AMD PERFCTRn and EVNTSELn MSRs arch/x86/include/asm/kvm_host.h | 37 ++- arch/x86/kvm/Makefile | 4 +- arch/x86/kvm/cpuid.c | 3 +- arch/x86/kvm/pmu.c | 557 +++++++++++----------------------------- arch/x86/kvm/pmu.h | 98 +++++++ arch/x86/kvm/pmu_amd.c | 207 +++++++++++++++ arch/x86/kvm/pmu_intel.c | 359 ++++++++++++++++++++++++++ arch/x86/kvm/svm.c | 8 + arch/x86/kvm/vmx.c | 8 + arch/x86/kvm/x86.c | 47 ++-- 10 files changed, 891 insertions(+), 437 deletions(-) create mode 100644 arch/x86/kvm/pmu.h create mode 100644 arch/x86/kvm/pmu_amd.c create mode 100644 arch/x86/kvm/pmu_intel.c -- 1.8.3.1