From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-26.3 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT,USER_IN_DEF_DKIM_WL autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1F739C433EF for ; Wed, 22 Sep 2021 00:07:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0DEA061153 for ; Wed, 22 Sep 2021 00:07:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231494AbhIVAIc (ORCPT ); Tue, 21 Sep 2021 20:08:32 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56816 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231896AbhIVAIL (ORCPT ); Tue, 21 Sep 2021 20:08:11 -0400 Received: from mail-qk1-x74a.google.com (mail-qk1-x74a.google.com [IPv6:2607:f8b0:4864:20::74a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CB5A3C061798 for ; Tue, 21 Sep 2021 17:06:12 -0700 (PDT) Received: by mail-qk1-x74a.google.com with SMTP id bi14-20020a05620a318e00b00432f0915dd6so5966883qkb.6 for ; Tue, 21 Sep 2021 17:06:12 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=reply-to:date:in-reply-to:message-id:mime-version:references :subject:from:to:cc; bh=y8OYsYpDs1HLDvFjdurM0d7KqhhKHNQa2gUw1mVnDLE=; b=VgUrfICBEU208O8puU1yf0798dMNWQPdVEv1umOOfyY7+MLL+nmtJuMQRYhGk6ACPB kV7DCUw8x7TThTD9JohJr12iNp9IVCl2gpkkOQsZfWo7I0JLG16fmuO2MGI3z76Slotc tAS3raY0P7YO93IW++jVoxXSx7bgW6LXHh9Lg2GYrEnit4mDk0PviAE/NTWZXLAHL0sx tQX8bpmjgklBcXInIIRO8BoGyPy1BMCOolkyTRz+cls0PNm7fOz8/SKH73cd2RwpkSM5 C8zyjgBkrIzTe2Xfi0y9KCgCoaxdmORS5u5QyM9nNkpibluFvb/Koa8wFffrHGQL3WIt pSLg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:reply-to:date:in-reply-to:message-id :mime-version:references:subject:from:to:cc; bh=y8OYsYpDs1HLDvFjdurM0d7KqhhKHNQa2gUw1mVnDLE=; b=BKcNdosGzJb3TYHstBwwEKZ/w8jyVoUqQwzop4u7vrrYANOgg5flJhhQmAazOR8pxb DBgC9r7ZNJJuDp0aXjSQ45svIM7IqhjXCmauBZpDCuAwpnEyfpeZGQPSmiwk9EKy9Jof NSOiiPpfyXuMK8RHvo3nTy7uV5ojIuwg80jD/D12Oh/Hmsd5PJjwLx6Vu24u0/s2INWe 46gvQCCQcX5f3s5p9sb69N8jzGxBd/T7gwSSRTzjlFq3cFbxSqfccnQmittNnAuQbo4X rCeLp+flpHoy7gaAAeKMTA8EQ4/PnxEKYDlW0ANm+nCWQ9ifpblZlyRtd1yhSPH6IxWx SF9w== X-Gm-Message-State: AOAM531OEUFlYLS8hMNuTeedxs8r6vL5/PMX5LgJDKAeH2Y+AD5skS0R RMUwJDUH9EmllZyOztOvIQnd6XTgAJs= X-Google-Smtp-Source: ABdhPJyHtapTp0OfNUKTfdvcX6WW6HZmgDH9RXeTSlkheaqjZb44gygT11cJLtQ1bPei5p+RUE6ibKLU+f0= X-Received: from seanjc798194.pdx.corp.google.com ([2620:15c:90:200:b022:92d6:d37b:686c]) (user=seanjc job=sendgmr) by 2002:a25:d9cc:: with SMTP id q195mr41667087ybg.15.1632269171910; Tue, 21 Sep 2021 17:06:11 -0700 (PDT) Reply-To: Sean Christopherson Date: Tue, 21 Sep 2021 17:05:30 -0700 In-Reply-To: <20210922000533.713300-1-seanjc@google.com> Message-Id: <20210922000533.713300-14-seanjc@google.com> Mime-Version: 1.0 References: <20210922000533.713300-1-seanjc@google.com> X-Mailer: git-send-email 2.33.0.464.g1972c5931b-goog Subject: [PATCH v3 13/16] KVM: x86: Move Intel Processor Trace interrupt handler to vmx.c From: Sean Christopherson To: Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Will Deacon , Mark Rutland , Marc Zyngier , Guo Ren , Nick Hu , Greentime Hu , Vincent Chen , Paul Walmsley , Palmer Dabbelt , Albert Ou , Paolo Bonzini , Boris Ostrovsky , Juergen Gross Cc: Alexander Shishkin , Jiri Olsa , Namhyung Kim , James Morse , Alexandru Elisei , Suzuki K Poulose , Sean Christopherson , Vitaly Kuznetsov , Wanpeng Li , Jim Mattson , Joerg Roedel , Stefano Stabellini , linux-arm-kernel@lists.infradead.org, linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org, kvmarm@lists.cs.columbia.edu, linux-csky@vger.kernel.org, linux-riscv@lists.infradead.org, kvm@vger.kernel.org, xen-devel@lists.xenproject.org, Artem Kashkanov , Like Xu , Zhu Lingshan Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Now that all state needed for VMX's PT interrupt handler is exposed to vmx.c (specifically the currently running vCPU), move the handler into vmx.c where it belongs. Signed-off-by: Sean Christopherson --- arch/x86/include/asm/kvm_host.h | 2 +- arch/x86/kvm/vmx/vmx.c | 22 +++++++++++++++++++++- arch/x86/kvm/x86.c | 20 +------------------- 3 files changed, 23 insertions(+), 21 deletions(-) diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index 6efe4e03a6d2..d40814b57ae8 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -1495,7 +1495,7 @@ struct kvm_x86_init_ops { int (*disabled_by_bios)(void); int (*check_processor_compatibility)(void); int (*hardware_setup)(void); - bool (*intel_pt_intr_in_guest)(void); + unsigned int (*handle_intel_pt_intr)(void); struct kvm_x86_ops *runtime_ops; }; diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c index 61a4f5ff2acd..33f92febe3ce 100644 --- a/arch/x86/kvm/vmx/vmx.c +++ b/arch/x86/kvm/vmx/vmx.c @@ -7687,6 +7687,20 @@ static struct kvm_x86_ops vmx_x86_ops __initdata = { .vcpu_deliver_sipi_vector = kvm_vcpu_deliver_sipi_vector, }; +static unsigned int vmx_handle_intel_pt_intr(void) +{ + struct kvm_vcpu *vcpu = kvm_get_running_vcpu(); + + /* '0' on failure so that the !PT case can use a RET0 static call. */ + if (!kvm_arch_pmi_in_guest(vcpu)) + return 0; + + kvm_make_request(KVM_REQ_PMI, vcpu); + __set_bit(MSR_CORE_PERF_GLOBAL_OVF_CTRL_TRACE_TOPA_PMI_BIT, + (unsigned long *)&vcpu->arch.pmu.global_status); + return 1; +} + static __init void vmx_setup_user_return_msrs(void) { @@ -7713,6 +7727,8 @@ static __init void vmx_setup_user_return_msrs(void) kvm_add_user_return_msr(vmx_uret_msrs_list[i]); } +static struct kvm_x86_init_ops vmx_init_ops __initdata; + static __init int hardware_setup(void) { unsigned long host_bndcfgs; @@ -7873,6 +7889,10 @@ static __init int hardware_setup(void) return -EINVAL; if (!enable_ept || !cpu_has_vmx_intel_pt()) pt_mode = PT_MODE_SYSTEM; + if (pt_mode == PT_MODE_HOST_GUEST) + vmx_init_ops.handle_intel_pt_intr = vmx_handle_intel_pt_intr; + else + vmx_init_ops.handle_intel_pt_intr = NULL; setup_default_sgx_lepubkeyhash(); @@ -7898,7 +7918,7 @@ static struct kvm_x86_init_ops vmx_init_ops __initdata = { .disabled_by_bios = vmx_disabled_by_bios, .check_processor_compatibility = vmx_check_processor_compat, .hardware_setup = hardware_setup, - .intel_pt_intr_in_guest = vmx_pt_mode_is_host_guest, + .handle_intel_pt_intr = NULL, .runtime_ops = &vmx_x86_ops, }; diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 1bea616402e6..b79b2d29260d 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -8264,20 +8264,6 @@ static void kvm_timer_init(void) kvmclock_cpu_online, kvmclock_cpu_down_prep); } -static unsigned int kvm_handle_intel_pt_intr(void) -{ - struct kvm_vcpu *vcpu = kvm_get_running_vcpu(); - - /* '0' on failure so that the !PT case can use a RET0 static call. */ - if (!kvm_arch_pmi_in_guest(vcpu)) - return 0; - - kvm_make_request(KVM_REQ_PMI, vcpu); - __set_bit(MSR_CORE_PERF_GLOBAL_OVF_CTRL_TRACE_TOPA_PMI_BIT, - (unsigned long *)&vcpu->arch.pmu.global_status); - return 1; -} - #ifdef CONFIG_X86_64 static void pvclock_gtod_update_fn(struct work_struct *work) { @@ -11031,11 +11017,7 @@ int kvm_arch_hardware_setup(void *opaque) memcpy(&kvm_x86_ops, ops->runtime_ops, sizeof(kvm_x86_ops)); kvm_ops_static_call_update(); - /* Temporary ugliness. */ - if (ops->intel_pt_intr_in_guest && ops->intel_pt_intr_in_guest()) - kvm_register_perf_callbacks(kvm_handle_intel_pt_intr); - else - kvm_register_perf_callbacks(NULL); + kvm_register_perf_callbacks(ops->handle_intel_pt_intr); if (!kvm_cpu_cap_has(X86_FEATURE_XSAVES)) supported_xss = 0; -- 2.33.0.464.g1972c5931b-goog