From patchwork Thu Aug 5 15:13:12 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zeng Guang X-Patchwork-Id: 12421539 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham 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 85E50C432BE for ; Thu, 5 Aug 2021 15:38:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6ABB86113C for ; Thu, 5 Aug 2021 15:38:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242122AbhHEPie (ORCPT ); Thu, 5 Aug 2021 11:38:34 -0400 Received: from mga11.intel.com ([192.55.52.93]:36579 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S242116AbhHEPi2 (ORCPT ); Thu, 5 Aug 2021 11:38:28 -0400 X-IronPort-AV: E=McAfee;i="6200,9189,10067"; a="211078968" X-IronPort-AV: E=Sophos;i="5.84,296,1620716400"; d="scan'208";a="211078968" Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Aug 2021 08:38:14 -0700 X-IronPort-AV: E=Sophos;i="5.84,296,1620716400"; d="scan'208";a="512734055" Received: from arthur-vostro-3668.sh.intel.com ([10.239.13.1]) by fmsmga003-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Aug 2021 08:38:09 -0700 From: Zeng Guang To: Paolo Bonzini , Sean Christopherson , Vitaly Kuznetsov , Wanpeng Li , Jim Mattson , Joerg Roedel , kvm@vger.kernel.org, Dave Hansen , Tony Luck , Kan Liang , Thomas Gleixner , Ingo Molnar , Borislav Petkov , "H. Peter Anvin" , Kim Phillips , Jarkko Sakkinen , Jethro Beekman , Kai Huang Cc: x86@kernel.org, linux-kernel@vger.kernel.org, Robert Hu , Gao Chao , Zeng Guang , Robert Hoo Subject: [PATCH v3 1/6] x86/feat_ctl: Add new VMX feature, Tertiary VM-Execution control Date: Thu, 5 Aug 2021 23:13:12 +0800 Message-Id: <20210805151317.19054-2-guang.zeng@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210805151317.19054-1-guang.zeng@intel.com> References: <20210805151317.19054-1-guang.zeng@intel.com> Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org From: Robert Hoo New VMX capability MSR IA32_VMX_PROCBASED_CTLS3 conresponse to this new VM-Execution control field. And it is 64bit allow-1 semantics, not like previous capability MSRs 32bit allow-0 and 32bit allow-1. So with Tertiary VM-Execution control field introduced, 2 vmx_feature leaves are introduced, TERTIARY_CTLS_LOW and TERTIARY_CTLS_HIGH. Signed-off-by: Robert Hoo Signed-off-by: Zeng Guang --- arch/x86/include/asm/msr-index.h | 1 + arch/x86/include/asm/vmxfeatures.h | 3 ++- arch/x86/kernel/cpu/feat_ctl.c | 11 ++++++++++- 3 files changed, 13 insertions(+), 2 deletions(-) diff --git a/arch/x86/include/asm/msr-index.h b/arch/x86/include/asm/msr-index.h index a7c413432b33..3df26e27b554 100644 --- a/arch/x86/include/asm/msr-index.h +++ b/arch/x86/include/asm/msr-index.h @@ -919,6 +919,7 @@ #define MSR_IA32_VMX_TRUE_EXIT_CTLS 0x0000048f #define MSR_IA32_VMX_TRUE_ENTRY_CTLS 0x00000490 #define MSR_IA32_VMX_VMFUNC 0x00000491 +#define MSR_IA32_VMX_PROCBASED_CTLS3 0x00000492 /* VMX_BASIC bits and bitmasks */ #define VMX_BASIC_VMCS_SIZE_SHIFT 32 diff --git a/arch/x86/include/asm/vmxfeatures.h b/arch/x86/include/asm/vmxfeatures.h index d9a74681a77d..b264f5c43b5f 100644 --- a/arch/x86/include/asm/vmxfeatures.h +++ b/arch/x86/include/asm/vmxfeatures.h @@ -5,7 +5,7 @@ /* * Defines VMX CPU feature bits */ -#define NVMXINTS 3 /* N 32-bit words worth of info */ +#define NVMXINTS 5 /* N 32-bit words worth of info */ /* * Note: If the comment begins with a quoted string, that string is used @@ -43,6 +43,7 @@ #define VMX_FEATURE_RDTSC_EXITING ( 1*32+ 12) /* "" VM-Exit on RDTSC */ #define VMX_FEATURE_CR3_LOAD_EXITING ( 1*32+ 15) /* "" VM-Exit on writes to CR3 */ #define VMX_FEATURE_CR3_STORE_EXITING ( 1*32+ 16) /* "" VM-Exit on reads from CR3 */ +#define VMX_FEATURE_TERTIARY_CONTROLS (1*32 + 17) /* "" Enable Tertiary VM-Execution Controls */ #define VMX_FEATURE_CR8_LOAD_EXITING ( 1*32+ 19) /* "" VM-Exit on writes to CR8 */ #define VMX_FEATURE_CR8_STORE_EXITING ( 1*32+ 20) /* "" VM-Exit on reads from CR8 */ #define VMX_FEATURE_VIRTUAL_TPR ( 1*32+ 21) /* "vtpr" TPR virtualization, a.k.a. TPR shadow */ diff --git a/arch/x86/kernel/cpu/feat_ctl.c b/arch/x86/kernel/cpu/feat_ctl.c index da696eb4821a..4aab4def5000 100644 --- a/arch/x86/kernel/cpu/feat_ctl.c +++ b/arch/x86/kernel/cpu/feat_ctl.c @@ -15,6 +15,8 @@ enum vmx_feature_leafs { MISC_FEATURES = 0, PRIMARY_CTLS, SECONDARY_CTLS, + TERTIARY_CTLS_LOW, + TERTIARY_CTLS_HIGH, NR_VMX_FEATURE_WORDS, }; @@ -22,7 +24,7 @@ enum vmx_feature_leafs { static void init_vmx_capabilities(struct cpuinfo_x86 *c) { - u32 supported, funcs, ept, vpid, ign; + u32 supported, funcs, ept, vpid, ign, low, high; BUILD_BUG_ON(NVMXINTS != NR_VMX_FEATURE_WORDS); @@ -42,6 +44,13 @@ static void init_vmx_capabilities(struct cpuinfo_x86 *c) rdmsr_safe(MSR_IA32_VMX_PROCBASED_CTLS2, &ign, &supported); c->vmx_capability[SECONDARY_CTLS] = supported; + /* + * For tertiary execution controls MSR, it's actually a 64bit allowed-1. + */ + rdmsr_safe(MSR_IA32_VMX_PROCBASED_CTLS3, &low, &high); + c->vmx_capability[TERTIARY_CTLS_LOW] = low; + c->vmx_capability[TERTIARY_CTLS_HIGH] = high; + rdmsr(MSR_IA32_VMX_PINBASED_CTLS, ign, supported); rdmsr_safe(MSR_IA32_VMX_VMFUNC, &ign, &funcs); From patchwork Thu Aug 5 15:13:13 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zeng Guang X-Patchwork-Id: 12421541 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=-13.9 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNWANTED_LANGUAGE_BODY, URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 B984DC432BE for ; Thu, 5 Aug 2021 15:38:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A4CCE6113C for ; Thu, 5 Aug 2021 15:38:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242168AbhHEPih (ORCPT ); Thu, 5 Aug 2021 11:38:37 -0400 Received: from mga11.intel.com ([192.55.52.93]:36579 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233549AbhHEPid (ORCPT ); Thu, 5 Aug 2021 11:38:33 -0400 X-IronPort-AV: E=McAfee;i="6200,9189,10067"; a="211079038" X-IronPort-AV: E=Sophos;i="5.84,296,1620716400"; d="scan'208";a="211079038" Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Aug 2021 08:38:19 -0700 X-IronPort-AV: E=Sophos;i="5.84,296,1620716400"; d="scan'208";a="512734144" Received: from arthur-vostro-3668.sh.intel.com ([10.239.13.1]) by fmsmga003-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Aug 2021 08:38:14 -0700 From: Zeng Guang To: Paolo Bonzini , Sean Christopherson , Vitaly Kuznetsov , Wanpeng Li , Jim Mattson , Joerg Roedel , kvm@vger.kernel.org, Dave Hansen , Tony Luck , Kan Liang , Thomas Gleixner , Ingo Molnar , Borislav Petkov , "H. Peter Anvin" , Kim Phillips , Jarkko Sakkinen , Jethro Beekman , Kai Huang Cc: x86@kernel.org, linux-kernel@vger.kernel.org, Robert Hu , Gao Chao , Zeng Guang , Robert Hoo Subject: [PATCH v3 2/6] KVM: VMX: Extend BUILD_CONTROLS_SHADOW macro to support 64-bit variation Date: Thu, 5 Aug 2021 23:13:13 +0800 Message-Id: <20210805151317.19054-3-guang.zeng@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210805151317.19054-1-guang.zeng@intel.com> References: <20210805151317.19054-1-guang.zeng@intel.com> Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org From: Robert Hoo The Tertiary VM-Exec Control, different from previous control fields, is 64 bit. So extend BUILD_CONTROLS_SHADOW() by adding a 'bit' parameter, to support both 32 bit and 64 bit fields' auxiliary functions building. Also, define the auxiliary functions for Tertiary control field here, using the new BUILD_CONTROLS_SHADOW(). Suggested-by: Sean Christopherson Signed-off-by: Robert Hoo --- arch/x86/kvm/vmx/vmx.h | 23 ++++++++++++----------- 1 file changed, 12 insertions(+), 11 deletions(-) diff --git a/arch/x86/kvm/vmx/vmx.h b/arch/x86/kvm/vmx/vmx.h index 3979a947933a..945c6639ce24 100644 --- a/arch/x86/kvm/vmx/vmx.h +++ b/arch/x86/kvm/vmx/vmx.h @@ -413,31 +413,32 @@ static inline u8 vmx_get_rvi(void) return vmcs_read16(GUEST_INTR_STATUS) & 0xff; } -#define BUILD_CONTROLS_SHADOW(lname, uname) \ -static inline void lname##_controls_set(struct vcpu_vmx *vmx, u32 val) \ +#define BUILD_CONTROLS_SHADOW(lname, uname, bits) \ +static inline void lname##_controls_set(struct vcpu_vmx *vmx, u##bits val) \ { \ if (vmx->loaded_vmcs->controls_shadow.lname != val) { \ - vmcs_write32(uname, val); \ + vmcs_write##bits(uname, val); \ vmx->loaded_vmcs->controls_shadow.lname = val; \ } \ } \ -static inline u32 lname##_controls_get(struct vcpu_vmx *vmx) \ +static inline u##bits lname##_controls_get(struct vcpu_vmx *vmx) \ { \ return vmx->loaded_vmcs->controls_shadow.lname; \ } \ -static inline void lname##_controls_setbit(struct vcpu_vmx *vmx, u32 val) \ +static inline void lname##_controls_setbit(struct vcpu_vmx *vmx, u##bits val) \ { \ lname##_controls_set(vmx, lname##_controls_get(vmx) | val); \ } \ -static inline void lname##_controls_clearbit(struct vcpu_vmx *vmx, u32 val) \ +static inline void lname##_controls_clearbit(struct vcpu_vmx *vmx, u##bits val) \ { \ lname##_controls_set(vmx, lname##_controls_get(vmx) & ~val); \ } -BUILD_CONTROLS_SHADOW(vm_entry, VM_ENTRY_CONTROLS) -BUILD_CONTROLS_SHADOW(vm_exit, VM_EXIT_CONTROLS) -BUILD_CONTROLS_SHADOW(pin, PIN_BASED_VM_EXEC_CONTROL) -BUILD_CONTROLS_SHADOW(exec, CPU_BASED_VM_EXEC_CONTROL) -BUILD_CONTROLS_SHADOW(secondary_exec, SECONDARY_VM_EXEC_CONTROL) +BUILD_CONTROLS_SHADOW(vm_entry, VM_ENTRY_CONTROLS, 32) +BUILD_CONTROLS_SHADOW(vm_exit, VM_EXIT_CONTROLS, 32) +BUILD_CONTROLS_SHADOW(pin, PIN_BASED_VM_EXEC_CONTROL, 32) +BUILD_CONTROLS_SHADOW(exec, CPU_BASED_VM_EXEC_CONTROL, 32) +BUILD_CONTROLS_SHADOW(secondary_exec, SECONDARY_VM_EXEC_CONTROL, 32) +BUILD_CONTROLS_SHADOW(tertiary_exec, TERTIARY_VM_EXEC_CONTROL, 64) static inline void vmx_register_cache_reset(struct kvm_vcpu *vcpu) { From patchwork Thu Aug 5 15:13:14 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zeng Guang X-Patchwork-Id: 12421543 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham 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 81F2DC432BE for ; Thu, 5 Aug 2021 15:38:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6DE8D6115B for ; Thu, 5 Aug 2021 15:38:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242158AbhHEPit (ORCPT ); Thu, 5 Aug 2021 11:38:49 -0400 Received: from mga11.intel.com ([192.55.52.93]:36579 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S242170AbhHEPii (ORCPT ); Thu, 5 Aug 2021 11:38:38 -0400 X-IronPort-AV: E=McAfee;i="6200,9189,10067"; a="211079053" X-IronPort-AV: E=Sophos;i="5.84,296,1620716400"; d="scan'208";a="211079053" Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Aug 2021 08:38:23 -0700 X-IronPort-AV: E=Sophos;i="5.84,296,1620716400"; d="scan'208";a="512734235" Received: from arthur-vostro-3668.sh.intel.com ([10.239.13.1]) by fmsmga003-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Aug 2021 08:38:19 -0700 From: Zeng Guang To: Paolo Bonzini , Sean Christopherson , Vitaly Kuznetsov , Wanpeng Li , Jim Mattson , Joerg Roedel , kvm@vger.kernel.org, Dave Hansen , Tony Luck , Kan Liang , Thomas Gleixner , Ingo Molnar , Borislav Petkov , "H. Peter Anvin" , Kim Phillips , Jarkko Sakkinen , Jethro Beekman , Kai Huang Cc: x86@kernel.org, linux-kernel@vger.kernel.org, Robert Hu , Gao Chao , Zeng Guang , Robert Hoo Subject: [PATCH v3 3/6] KVM: VMX: Detect Tertiary VM-Execution control when setup VMCS config Date: Thu, 5 Aug 2021 23:13:14 +0800 Message-Id: <20210805151317.19054-4-guang.zeng@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210805151317.19054-1-guang.zeng@intel.com> References: <20210805151317.19054-1-guang.zeng@intel.com> Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org From: Robert Hoo Check VMX feature on tertiary execution control in VMCS config setup. Currently it's not supported for hyper-v and disabled for now. Signed-off-by: Robert Hoo Signed-off-by: Zeng Guang --- arch/x86/include/asm/vmx.h | 3 +++ arch/x86/kvm/vmx/capabilities.h | 7 ++++++ arch/x86/kvm/vmx/evmcs.c | 2 ++ arch/x86/kvm/vmx/evmcs.h | 1 + arch/x86/kvm/vmx/vmcs.h | 1 + arch/x86/kvm/vmx/vmx.c | 40 ++++++++++++++++++++++++++++++++- arch/x86/kvm/vmx/vmx.h | 1 + 7 files changed, 54 insertions(+), 1 deletion(-) diff --git a/arch/x86/include/asm/vmx.h b/arch/x86/include/asm/vmx.h index 0ffaa3156a4e..8c929596a299 100644 --- a/arch/x86/include/asm/vmx.h +++ b/arch/x86/include/asm/vmx.h @@ -31,6 +31,7 @@ #define CPU_BASED_RDTSC_EXITING VMCS_CONTROL_BIT(RDTSC_EXITING) #define CPU_BASED_CR3_LOAD_EXITING VMCS_CONTROL_BIT(CR3_LOAD_EXITING) #define CPU_BASED_CR3_STORE_EXITING VMCS_CONTROL_BIT(CR3_STORE_EXITING) +#define CPU_BASED_ACTIVATE_TERTIARY_CONTROLS VMCS_CONTROL_BIT(TERTIARY_CONTROLS) #define CPU_BASED_CR8_LOAD_EXITING VMCS_CONTROL_BIT(CR8_LOAD_EXITING) #define CPU_BASED_CR8_STORE_EXITING VMCS_CONTROL_BIT(CR8_STORE_EXITING) #define CPU_BASED_TPR_SHADOW VMCS_CONTROL_BIT(VIRTUAL_TPR) @@ -221,6 +222,8 @@ enum vmcs_field { ENCLS_EXITING_BITMAP_HIGH = 0x0000202F, TSC_MULTIPLIER = 0x00002032, TSC_MULTIPLIER_HIGH = 0x00002033, + TERTIARY_VM_EXEC_CONTROL = 0x00002034, + TERTIARY_VM_EXEC_CONTROL_HIGH = 0x00002035, GUEST_PHYSICAL_ADDRESS = 0x00002400, GUEST_PHYSICAL_ADDRESS_HIGH = 0x00002401, VMCS_LINK_POINTER = 0x00002800, diff --git a/arch/x86/kvm/vmx/capabilities.h b/arch/x86/kvm/vmx/capabilities.h index 4705ad55abb5..38d414f64e61 100644 --- a/arch/x86/kvm/vmx/capabilities.h +++ b/arch/x86/kvm/vmx/capabilities.h @@ -59,6 +59,7 @@ struct vmcs_config { u32 pin_based_exec_ctrl; u32 cpu_based_exec_ctrl; u32 cpu_based_2nd_exec_ctrl; + u64 cpu_based_3rd_exec_ctrl; u32 vmexit_ctrl; u32 vmentry_ctrl; struct nested_vmx_msrs nested; @@ -131,6 +132,12 @@ static inline bool cpu_has_secondary_exec_ctrls(void) CPU_BASED_ACTIVATE_SECONDARY_CONTROLS; } +static inline bool cpu_has_tertiary_exec_ctrls(void) +{ + return vmcs_config.cpu_based_exec_ctrl & + CPU_BASED_ACTIVATE_TERTIARY_CONTROLS; +} + static inline bool cpu_has_vmx_virtualize_apic_accesses(void) { return vmcs_config.cpu_based_2nd_exec_ctrl & diff --git a/arch/x86/kvm/vmx/evmcs.c b/arch/x86/kvm/vmx/evmcs.c index 896b2a50b4aa..03c15e1e5807 100644 --- a/arch/x86/kvm/vmx/evmcs.c +++ b/arch/x86/kvm/vmx/evmcs.c @@ -299,8 +299,10 @@ const unsigned int nr_evmcs_1_fields = ARRAY_SIZE(vmcs_field_to_evmcs_1); __init void evmcs_sanitize_exec_ctrls(struct vmcs_config *vmcs_conf) { + vmcs_conf->cpu_based_exec_ctrl &= ~EVMCS1_UNSUPPORTED_EXEC_CTRL; vmcs_conf->pin_based_exec_ctrl &= ~EVMCS1_UNSUPPORTED_PINCTRL; vmcs_conf->cpu_based_2nd_exec_ctrl &= ~EVMCS1_UNSUPPORTED_2NDEXEC; + vmcs_conf->cpu_based_3rd_exec_ctrl = 0; vmcs_conf->vmexit_ctrl &= ~EVMCS1_UNSUPPORTED_VMEXIT_CTRL; vmcs_conf->vmentry_ctrl &= ~EVMCS1_UNSUPPORTED_VMENTRY_CTRL; diff --git a/arch/x86/kvm/vmx/evmcs.h b/arch/x86/kvm/vmx/evmcs.h index 2ec9b46f0d0c..8a20295f4f0f 100644 --- a/arch/x86/kvm/vmx/evmcs.h +++ b/arch/x86/kvm/vmx/evmcs.h @@ -50,6 +50,7 @@ DECLARE_STATIC_KEY_FALSE(enable_evmcs); */ #define EVMCS1_UNSUPPORTED_PINCTRL (PIN_BASED_POSTED_INTR | \ PIN_BASED_VMX_PREEMPTION_TIMER) +#define EVMCS1_UNSUPPORTED_EXEC_CTRL (CPU_BASED_ACTIVATE_TERTIARY_CONTROLS) #define EVMCS1_UNSUPPORTED_2NDEXEC \ (SECONDARY_EXEC_VIRTUAL_INTR_DELIVERY | \ SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES | \ diff --git a/arch/x86/kvm/vmx/vmcs.h b/arch/x86/kvm/vmx/vmcs.h index 4b9957e2bf5b..83e2065a955d 100644 --- a/arch/x86/kvm/vmx/vmcs.h +++ b/arch/x86/kvm/vmx/vmcs.h @@ -48,6 +48,7 @@ struct vmcs_controls_shadow { u32 pin; u32 exec; u32 secondary_exec; + u64 tertiary_exec; }; /* diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c index 927a552393b9..53de999054d1 100644 --- a/arch/x86/kvm/vmx/vmx.c +++ b/arch/x86/kvm/vmx/vmx.c @@ -2391,6 +2391,23 @@ static __init int adjust_vmx_controls(u32 ctl_min, u32 ctl_opt, return 0; } +static __init int adjust_vmx_controls_64(u64 ctl_min, u64 ctl_opt, + u32 msr, u64 *result) +{ + u64 vmx_msr; + u64 ctl = ctl_min | ctl_opt; + + rdmsrl(msr, vmx_msr); + ctl &= vmx_msr; /* bit == 1 means it can be set */ + + /* Ensure minimum (required) set of control bits are supported. */ + if (ctl_min & ~ctl) + return -EIO; + + *result = ctl; + return 0; +} + static __init int setup_vmcs_config(struct vmcs_config *vmcs_conf, struct vmx_capability *vmx_cap) { @@ -2399,6 +2416,7 @@ static __init int setup_vmcs_config(struct vmcs_config *vmcs_conf, u32 _pin_based_exec_control = 0; u32 _cpu_based_exec_control = 0; u32 _cpu_based_2nd_exec_control = 0; + u64 _cpu_based_3rd_exec_control = 0; u32 _vmexit_control = 0; u32 _vmentry_control = 0; @@ -2420,7 +2438,8 @@ static __init int setup_vmcs_config(struct vmcs_config *vmcs_conf, opt = CPU_BASED_TPR_SHADOW | CPU_BASED_USE_MSR_BITMAPS | - CPU_BASED_ACTIVATE_SECONDARY_CONTROLS; + CPU_BASED_ACTIVATE_SECONDARY_CONTROLS | + CPU_BASED_ACTIVATE_TERTIARY_CONTROLS; if (adjust_vmx_controls(min, opt, MSR_IA32_VMX_PROCBASED_CTLS, &_cpu_based_exec_control) < 0) return -EIO; @@ -2494,6 +2513,16 @@ static __init int setup_vmcs_config(struct vmcs_config *vmcs_conf, "1-setting enable VPID VM-execution control\n"); } + if (_cpu_based_exec_control & CPU_BASED_ACTIVATE_TERTIARY_CONTROLS) { + u64 opt3 = 0; + u64 min3 = 0; + + if (adjust_vmx_controls_64(min3, opt3, + MSR_IA32_VMX_PROCBASED_CTLS3, + &_cpu_based_3rd_exec_control)) + return -EIO; + } + min = VM_EXIT_SAVE_DEBUG_CONTROLS | VM_EXIT_ACK_INTR_ON_EXIT; #ifdef CONFIG_X86_64 min |= VM_EXIT_HOST_ADDR_SPACE_SIZE; @@ -2581,6 +2610,7 @@ static __init int setup_vmcs_config(struct vmcs_config *vmcs_conf, vmcs_conf->pin_based_exec_ctrl = _pin_based_exec_control; vmcs_conf->cpu_based_exec_ctrl = _cpu_based_exec_control; vmcs_conf->cpu_based_2nd_exec_ctrl = _cpu_based_2nd_exec_control; + vmcs_conf->cpu_based_3rd_exec_ctrl = _cpu_based_3rd_exec_control; vmcs_conf->vmexit_ctrl = _vmexit_control; vmcs_conf->vmentry_ctrl = _vmentry_control; @@ -4148,6 +4178,11 @@ u32 vmx_exec_control(struct vcpu_vmx *vmx) return exec_control; } +u64 vmx_tertiary_exec_control(struct vcpu_vmx *vmx) +{ + return vmcs_config.cpu_based_3rd_exec_ctrl; +} + /* * Adjust a single secondary execution control bit to intercept/allow an * instruction in the guest. This is usually done based on whether or not a @@ -4319,6 +4354,9 @@ static void init_vmcs(struct vcpu_vmx *vmx) secondary_exec_controls_set(vmx, vmx->secondary_exec_control); } + if (cpu_has_tertiary_exec_ctrls()) + tertiary_exec_controls_set(vmx, vmx_tertiary_exec_control(vmx)); + if (kvm_vcpu_apicv_active(&vmx->vcpu)) { vmcs_write64(EOI_EXIT_BITMAP0, 0); vmcs_write64(EOI_EXIT_BITMAP1, 0); diff --git a/arch/x86/kvm/vmx/vmx.h b/arch/x86/kvm/vmx/vmx.h index 945c6639ce24..448006bd8fa7 100644 --- a/arch/x86/kvm/vmx/vmx.h +++ b/arch/x86/kvm/vmx/vmx.h @@ -478,6 +478,7 @@ static inline u32 vmx_vmexit_ctrl(void) u32 vmx_exec_control(struct vcpu_vmx *vmx); u32 vmx_pin_based_exec_ctrl(struct vcpu_vmx *vmx); +u64 vmx_tertiary_exec_control(struct vcpu_vmx *vmx); static inline struct kvm_vmx *to_kvm_vmx(struct kvm *kvm) { From patchwork Thu Aug 5 15:13:15 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zeng Guang X-Patchwork-Id: 12421545 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham 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 2580FC4338F for ; Thu, 5 Aug 2021 15:38:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0DE5860E8D for ; Thu, 5 Aug 2021 15:38:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242224AbhHEPix (ORCPT ); Thu, 5 Aug 2021 11:38:53 -0400 Received: from mga11.intel.com ([192.55.52.93]:36611 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S242211AbhHEPin (ORCPT ); Thu, 5 Aug 2021 11:38:43 -0400 X-IronPort-AV: E=McAfee;i="6200,9189,10067"; a="211079073" X-IronPort-AV: E=Sophos;i="5.84,296,1620716400"; d="scan'208";a="211079073" Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Aug 2021 08:38:28 -0700 X-IronPort-AV: E=Sophos;i="5.84,296,1620716400"; d="scan'208";a="512734337" Received: from arthur-vostro-3668.sh.intel.com ([10.239.13.1]) by fmsmga003-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Aug 2021 08:38:23 -0700 From: Zeng Guang To: Paolo Bonzini , Sean Christopherson , Vitaly Kuznetsov , Wanpeng Li , Jim Mattson , Joerg Roedel , kvm@vger.kernel.org, Dave Hansen , Tony Luck , Kan Liang , Thomas Gleixner , Ingo Molnar , Borislav Petkov , "H. Peter Anvin" , Kim Phillips , Jarkko Sakkinen , Jethro Beekman , Kai Huang Cc: x86@kernel.org, linux-kernel@vger.kernel.org, Robert Hu , Gao Chao , Zeng Guang , Robert Hoo Subject: [PATCH v3 4/6] KVM: VMX: dump_vmcs() reports tertiary_exec_control field as well Date: Thu, 5 Aug 2021 23:13:15 +0800 Message-Id: <20210805151317.19054-5-guang.zeng@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210805151317.19054-1-guang.zeng@intel.com> References: <20210805151317.19054-1-guang.zeng@intel.com> Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org From: Robert Hoo Add tertiary_exec_control field report in dump_vmcs() Signed-off-by: Robert Hoo Signed-off-by: Zeng Guang --- arch/x86/kvm/vmx/vmx.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c index 53de999054d1..0f7aecd1e2d1 100644 --- a/arch/x86/kvm/vmx/vmx.c +++ b/arch/x86/kvm/vmx/vmx.c @@ -5745,6 +5745,7 @@ void dump_vmcs(struct kvm_vcpu *vcpu) struct vcpu_vmx *vmx = to_vmx(vcpu); u32 vmentry_ctl, vmexit_ctl; u32 cpu_based_exec_ctrl, pin_based_exec_ctrl, secondary_exec_control; + u64 tertiary_exec_control = 0; unsigned long cr4; int efer_slot; @@ -5762,6 +5763,9 @@ void dump_vmcs(struct kvm_vcpu *vcpu) if (cpu_has_secondary_exec_ctrls()) secondary_exec_control = vmcs_read32(SECONDARY_VM_EXEC_CONTROL); + if (cpu_has_tertiary_exec_ctrls()) + tertiary_exec_control = vmcs_read64(TERTIARY_VM_EXEC_CONTROL); + pr_err("VMCS %p, last attempted VM-entry on CPU %d\n", vmx->loaded_vmcs->vmcs, vcpu->arch.last_vmentry_cpu); pr_err("*** Guest State ***\n"); @@ -5860,8 +5864,9 @@ void dump_vmcs(struct kvm_vcpu *vcpu) vmx_dump_msrs("host autoload", &vmx->msr_autoload.host); pr_err("*** Control State ***\n"); - pr_err("PinBased=%08x CPUBased=%08x SecondaryExec=%08x\n", - pin_based_exec_ctrl, cpu_based_exec_ctrl, secondary_exec_control); + pr_err("PinBased=0x%08x CPUBased=0x%08x SecondaryExec=0x%08x TertiaryExec=0x%016llx\n", + pin_based_exec_ctrl, cpu_based_exec_ctrl, secondary_exec_control, + tertiary_exec_control); pr_err("EntryControls=%08x ExitControls=%08x\n", vmentry_ctl, vmexit_ctl); pr_err("ExceptionBitmap=%08x PFECmask=%08x PFECmatch=%08x\n", vmcs_read32(EXCEPTION_BITMAP), From patchwork Thu Aug 5 15:13:16 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zeng Guang X-Patchwork-Id: 12421549 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 41D56C4338F for ; Thu, 5 Aug 2021 15:39:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2A1D461151 for ; Thu, 5 Aug 2021 15:39:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242056AbhHEPkK (ORCPT ); Thu, 5 Aug 2021 11:40:10 -0400 Received: from mga18.intel.com ([134.134.136.126]:50700 "EHLO mga18.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S242170AbhHEPjF (ORCPT ); Thu, 5 Aug 2021 11:39:05 -0400 X-IronPort-AV: E=McAfee;i="6200,9189,10067"; a="201369443" X-IronPort-AV: E=Sophos;i="5.84,296,1620716400"; d="scan'208";a="201369443" Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by orsmga106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Aug 2021 08:38:34 -0700 X-IronPort-AV: E=Sophos;i="5.84,296,1620716400"; d="scan'208";a="512734393" Received: from arthur-vostro-3668.sh.intel.com ([10.239.13.1]) by fmsmga003-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Aug 2021 08:38:28 -0700 From: Zeng Guang To: Paolo Bonzini , Sean Christopherson , Vitaly Kuznetsov , Wanpeng Li , Jim Mattson , Joerg Roedel , kvm@vger.kernel.org, Dave Hansen , Tony Luck , Kan Liang , Thomas Gleixner , Ingo Molnar , Borislav Petkov , "H. Peter Anvin" , Kim Phillips , Jarkko Sakkinen , Jethro Beekman , Kai Huang Cc: x86@kernel.org, linux-kernel@vger.kernel.org, Robert Hu , Gao Chao , Zeng Guang Subject: [PATCH v3 5/6] KVM: x86: Support interrupt dispatch in x2APIC mode with APIC-write VM exit Date: Thu, 5 Aug 2021 23:13:16 +0800 Message-Id: <20210805151317.19054-6-guang.zeng@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210805151317.19054-1-guang.zeng@intel.com> References: <20210805151317.19054-1-guang.zeng@intel.com> Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org Since IA x86 platform introduce features of IPI virtualization and User Interrupts, new behavior applies to the execution of WRMSR ICR register that causes APIC-write VM exit instead of MSR-write VM exit in x2APIC mode. This requires KVM to emulate writing 64-bit value to offset 300H on the virtual-APIC page(VICR) for guest running in x2APIC mode when APIC-wrtie VM exit occurs. Prevoisely KVM doesn't consider this situation as CPU never produce APIC-write VM exit in x2APIC mode before. Signed-off-by: Zeng Guang --- arch/x86/kvm/lapic.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c index ba5a27879f1d..0b0f0ce96679 100644 --- a/arch/x86/kvm/lapic.c +++ b/arch/x86/kvm/lapic.c @@ -2188,7 +2188,14 @@ void kvm_apic_write_nodecode(struct kvm_vcpu *vcpu, u32 offset) /* hw has done the conditional check and inst decode */ offset &= 0xff0; - kvm_lapic_reg_read(vcpu->arch.apic, offset, 4, &val); + if (apic_x2apic_mode(vcpu->arch.apic) && (offset == APIC_ICR)) { + u64 icr_val = *((u64 *)(vcpu->arch.apic->regs + offset)); + + kvm_lapic_reg_write(vcpu->arch.apic, APIC_ICR2, (u32)(icr_val>>32)); + val = (u32)icr_val; + } else { + kvm_lapic_reg_read(vcpu->arch.apic, offset, 4, &val); + } /* TODO: optimize to just emulate side effect w/o one more write */ kvm_lapic_reg_write(vcpu->arch.apic, offset, val); From patchwork Thu Aug 5 15:13:17 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zeng Guang X-Patchwork-Id: 12421547 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 2F102C4338F for ; Thu, 5 Aug 2021 15:39:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1AE5361151 for ; Thu, 5 Aug 2021 15:39:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242291AbhHEPjF (ORCPT ); Thu, 5 Aug 2021 11:39:05 -0400 Received: from mga03.intel.com ([134.134.136.65]:63642 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S242260AbhHEPiy (ORCPT ); Thu, 5 Aug 2021 11:38:54 -0400 X-IronPort-AV: E=McAfee;i="6200,9189,10067"; a="214209814" X-IronPort-AV: E=Sophos;i="5.84,296,1620716400"; d="scan'208";a="214209814" Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by orsmga103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Aug 2021 08:38:39 -0700 X-IronPort-AV: E=Sophos;i="5.84,296,1620716400"; d="scan'208";a="512734476" Received: from arthur-vostro-3668.sh.intel.com ([10.239.13.1]) by fmsmga003-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Aug 2021 08:38:34 -0700 From: Zeng Guang To: Paolo Bonzini , Sean Christopherson , Vitaly Kuznetsov , Wanpeng Li , Jim Mattson , Joerg Roedel , kvm@vger.kernel.org, Dave Hansen , Tony Luck , Kan Liang , Thomas Gleixner , Ingo Molnar , Borislav Petkov , "H. Peter Anvin" , Kim Phillips , Jarkko Sakkinen , Jethro Beekman , Kai Huang Cc: x86@kernel.org, linux-kernel@vger.kernel.org, Robert Hu , Gao Chao , Zeng Guang Subject: [PATCH v3 6/6] KVM: VMX: enable IPI virtualization Date: Thu, 5 Aug 2021 23:13:17 +0800 Message-Id: <20210805151317.19054-7-guang.zeng@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210805151317.19054-1-guang.zeng@intel.com> References: <20210805151317.19054-1-guang.zeng@intel.com> Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org From: Gao Chao With IPI virtualization enabled, the processor emulates writes to APIC registers that would send IPIs. The processor sets the bit corresponding to the vector in target vCPU's PIR and may send a notification (IPI) specified by NDST and NV fields in target vCPU's PID. It is similar to what IOMMU engine does when dealing with posted interrupt from devices. A PID-pointer table is used by the processor to locate the PID of a vCPU with the vCPU's APIC ID. Like VT-d PI, if a vCPU goes to blocked state, VMM needs to switch its notification vector to wakeup vector. This can ensure that when an IPI for blocked vCPUs arrives, VMM can get control and wake up blocked vCPUs. And if a VCPU is preempted, its posted interrupt notification is suppressed. Note that IPI virtualization can only virualize physical-addressing, flat mode, unicast IPIs. Sending other IPIs would still cause a VM exit and need to be handled by VMM. Signed-off-by: Gao Chao Signed-off-by: Zeng Guang --- arch/x86/include/asm/vmx.h | 8 ++++ arch/x86/include/asm/vmxfeatures.h | 2 + arch/x86/kvm/vmx/capabilities.h | 7 +++ arch/x86/kvm/vmx/posted_intr.c | 22 +++++++--- arch/x86/kvm/vmx/vmx.c | 69 ++++++++++++++++++++++++++++-- arch/x86/kvm/vmx/vmx.h | 3 ++ 6 files changed, 101 insertions(+), 10 deletions(-) diff --git a/arch/x86/include/asm/vmx.h b/arch/x86/include/asm/vmx.h index 8c929596a299..b79b6438acaa 100644 --- a/arch/x86/include/asm/vmx.h +++ b/arch/x86/include/asm/vmx.h @@ -76,6 +76,11 @@ #define SECONDARY_EXEC_ENABLE_USR_WAIT_PAUSE VMCS_CONTROL_BIT(USR_WAIT_PAUSE) #define SECONDARY_EXEC_BUS_LOCK_DETECTION VMCS_CONTROL_BIT(BUS_LOCK_DETECTION) +/* + * Definitions of Tertiary Processor-Based VM-Execution Controls. + */ +#define TERTIARY_EXEC_IPI_VIRT VMCS_CONTROL_BIT(IPI_VIRT) + #define PIN_BASED_EXT_INTR_MASK VMCS_CONTROL_BIT(INTR_EXITING) #define PIN_BASED_NMI_EXITING VMCS_CONTROL_BIT(NMI_EXITING) #define PIN_BASED_VIRTUAL_NMIS VMCS_CONTROL_BIT(VIRTUAL_NMIS) @@ -159,6 +164,7 @@ static inline int vmx_misc_mseg_revid(u64 vmx_misc) enum vmcs_field { VIRTUAL_PROCESSOR_ID = 0x00000000, POSTED_INTR_NV = 0x00000002, + LAST_PID_POINTER_INDEX = 0x00000008, GUEST_ES_SELECTOR = 0x00000800, GUEST_CS_SELECTOR = 0x00000802, GUEST_SS_SELECTOR = 0x00000804, @@ -224,6 +230,8 @@ enum vmcs_field { TSC_MULTIPLIER_HIGH = 0x00002033, TERTIARY_VM_EXEC_CONTROL = 0x00002034, TERTIARY_VM_EXEC_CONTROL_HIGH = 0x00002035, + PID_POINTER_TABLE = 0x00002042, + PID_POINTER_TABLE_HIGH = 0x00002043, GUEST_PHYSICAL_ADDRESS = 0x00002400, GUEST_PHYSICAL_ADDRESS_HIGH = 0x00002401, VMCS_LINK_POINTER = 0x00002800, diff --git a/arch/x86/include/asm/vmxfeatures.h b/arch/x86/include/asm/vmxfeatures.h index b264f5c43b5f..e7b368a68c7c 100644 --- a/arch/x86/include/asm/vmxfeatures.h +++ b/arch/x86/include/asm/vmxfeatures.h @@ -86,4 +86,6 @@ #define VMX_FEATURE_ENCLV_EXITING ( 2*32+ 28) /* "" VM-Exit on ENCLV (leaf dependent) */ #define VMX_FEATURE_BUS_LOCK_DETECTION ( 2*32+ 30) /* "" VM-Exit when bus lock caused */ +/* Tertiary Processor-Based VM-Execution Controls, word 3 */ +#define VMX_FEATURE_IPI_VIRT ( 3*32 + 4) /* "" Enable IPI virtualization */ #endif /* _ASM_X86_VMXFEATURES_H */ diff --git a/arch/x86/kvm/vmx/capabilities.h b/arch/x86/kvm/vmx/capabilities.h index 38d414f64e61..78b0525dd991 100644 --- a/arch/x86/kvm/vmx/capabilities.h +++ b/arch/x86/kvm/vmx/capabilities.h @@ -12,6 +12,7 @@ extern bool __read_mostly enable_ept; extern bool __read_mostly enable_unrestricted_guest; extern bool __read_mostly enable_ept_ad_bits; extern bool __read_mostly enable_pml; +extern bool __read_mostly enable_ipiv; extern int __read_mostly pt_mode; #define PT_MODE_SYSTEM 0 @@ -283,6 +284,12 @@ static inline bool cpu_has_vmx_apicv(void) cpu_has_vmx_posted_intr(); } +static inline bool cpu_has_vmx_ipiv(void) +{ + return vmcs_config.cpu_based_3rd_exec_ctrl & + TERTIARY_EXEC_IPI_VIRT; +} + static inline bool cpu_has_vmx_flexpriority(void) { return cpu_has_vmx_tpr_shadow() && diff --git a/arch/x86/kvm/vmx/posted_intr.c b/arch/x86/kvm/vmx/posted_intr.c index 5f81ef092bd4..8c1400aaa1e7 100644 --- a/arch/x86/kvm/vmx/posted_intr.c +++ b/arch/x86/kvm/vmx/posted_intr.c @@ -81,9 +81,12 @@ void vmx_vcpu_pi_put(struct kvm_vcpu *vcpu) { struct pi_desc *pi_desc = vcpu_to_pi_desc(vcpu); - if (!kvm_arch_has_assigned_device(vcpu->kvm) || - !irq_remapping_cap(IRQ_POSTING_CAP) || - !kvm_vcpu_apicv_active(vcpu)) + if (!kvm_vcpu_apicv_active(vcpu)) + return; + + if ((!kvm_arch_has_assigned_device(vcpu->kvm) || + !irq_remapping_cap(IRQ_POSTING_CAP)) && + !enable_ipiv) return; /* Set SN when the vCPU is preempted */ @@ -141,9 +144,16 @@ int pi_pre_block(struct kvm_vcpu *vcpu) struct pi_desc old, new; struct pi_desc *pi_desc = vcpu_to_pi_desc(vcpu); - if (!kvm_arch_has_assigned_device(vcpu->kvm) || - !irq_remapping_cap(IRQ_POSTING_CAP) || - !kvm_vcpu_apicv_active(vcpu)) + if (!kvm_vcpu_apicv_active(vcpu)) + return 0; + + /* Put vCPU into a list and set NV to wakeup vector if it is + * one of the following cases: + * 1. any assigned device is in use. + * 2. IPI virtualization is enabled. + */ + if ((!kvm_arch_has_assigned_device(vcpu->kvm) || + !irq_remapping_cap(IRQ_POSTING_CAP)) && !enable_ipiv) return 0; WARN_ON(irqs_disabled()); diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c index 0f7aecd1e2d1..2f24ac65c48f 100644 --- a/arch/x86/kvm/vmx/vmx.c +++ b/arch/x86/kvm/vmx/vmx.c @@ -104,6 +104,9 @@ module_param(fasteoi, bool, S_IRUGO); module_param(enable_apicv, bool, S_IRUGO); +bool __read_mostly enable_ipiv = 1; +module_param(enable_ipiv, bool, S_IRUGO); + /* * If nested=1, nested virtualization is supported, i.e., guests may use * VMX and be a hypervisor for its own guests. If nested=0, guests may not @@ -225,6 +228,7 @@ static const struct { }; #define L1D_CACHE_ORDER 4 +#define PID_TABLE_ORDER get_order(KVM_MAX_VCPU_ID << 3) static void *vmx_l1d_flush_pages; static int vmx_setup_l1d_flush(enum vmx_l1d_flush_state l1tf) @@ -2514,7 +2518,7 @@ static __init int setup_vmcs_config(struct vmcs_config *vmcs_conf, } if (_cpu_based_exec_control & CPU_BASED_ACTIVATE_TERTIARY_CONTROLS) { - u64 opt3 = 0; + u64 opt3 = enable_ipiv ? TERTIARY_EXEC_IPI_VIRT : 0; u64 min3 = 0; if (adjust_vmx_controls_64(min3, opt3, @@ -3870,6 +3874,8 @@ static void vmx_update_msr_bitmap_x2apic(struct kvm_vcpu *vcpu, u8 mode) vmx_enable_intercept_for_msr(vcpu, X2APIC_MSR(APIC_TMCCT), MSR_TYPE_RW); vmx_disable_intercept_for_msr(vcpu, X2APIC_MSR(APIC_EOI), MSR_TYPE_W); vmx_disable_intercept_for_msr(vcpu, X2APIC_MSR(APIC_SELF_IPI), MSR_TYPE_W); + vmx_set_intercept_for_msr(vcpu, X2APIC_MSR(APIC_ICR), + MSR_TYPE_RW, !enable_ipiv); } } @@ -4138,14 +4144,21 @@ static void vmx_refresh_apicv_exec_ctrl(struct kvm_vcpu *vcpu) pin_controls_set(vmx, vmx_pin_based_exec_ctrl(vmx)); if (cpu_has_secondary_exec_ctrls()) { - if (kvm_vcpu_apicv_active(vcpu)) + if (kvm_vcpu_apicv_active(vcpu)) { secondary_exec_controls_setbit(vmx, SECONDARY_EXEC_APIC_REGISTER_VIRT | SECONDARY_EXEC_VIRTUAL_INTR_DELIVERY); - else + if (cpu_has_tertiary_exec_ctrls() && enable_ipiv) + tertiary_exec_controls_setbit(vmx, + TERTIARY_EXEC_IPI_VIRT); + } else { secondary_exec_controls_clearbit(vmx, SECONDARY_EXEC_APIC_REGISTER_VIRT | SECONDARY_EXEC_VIRTUAL_INTR_DELIVERY); + if (cpu_has_tertiary_exec_ctrls()) + tertiary_exec_controls_clearbit(vmx, + TERTIARY_EXEC_IPI_VIRT); + } } if (cpu_has_vmx_msr_bitmap()) @@ -4180,7 +4193,13 @@ u32 vmx_exec_control(struct vcpu_vmx *vmx) u64 vmx_tertiary_exec_control(struct vcpu_vmx *vmx) { - return vmcs_config.cpu_based_3rd_exec_ctrl; + struct kvm_vcpu *vcpu = &vmx->vcpu; + u64 exec_control = vmcs_config.cpu_based_3rd_exec_ctrl; + + if (!kvm_vcpu_apicv_active(vcpu)) + exec_control &= ~TERTIARY_EXEC_IPI_VIRT; + + return exec_control; } /* @@ -4330,6 +4349,17 @@ static void vmx_compute_secondary_exec_control(struct vcpu_vmx *vmx) #define VMX_XSS_EXIT_BITMAP 0 +static void install_pid(struct vcpu_vmx *vmx) +{ + struct kvm_vmx *kvm_vmx = to_kvm_vmx(vmx->vcpu.kvm); + + BUG_ON(vmx->vcpu.vcpu_id > kvm_vmx->pid_last_index); + /* Bit 0 is the valid bit */ + kvm_vmx->pid_table[vmx->vcpu.vcpu_id] = __pa(&vmx->pi_desc) | 1; + vmcs_write64(PID_POINTER_TABLE, __pa(kvm_vmx->pid_table)); + vmcs_write16(LAST_PID_POINTER_INDEX, kvm_vmx->pid_last_index); +} + /* * Noting that the initialization of Guest-state Area of VMCS is in * vmx_vcpu_reset(). @@ -4367,6 +4397,9 @@ static void init_vmcs(struct vcpu_vmx *vmx) vmcs_write16(POSTED_INTR_NV, POSTED_INTR_VECTOR); vmcs_write64(POSTED_INTR_DESC_ADDR, __pa((&vmx->pi_desc))); + + if (enable_ipiv) + install_pid(vmx); } if (!kvm_pause_in_guest(vmx->vcpu.kvm)) { @@ -6965,6 +6998,22 @@ static int vmx_vm_init(struct kvm *kvm) break; } } + + if (enable_ipiv) { + struct page *pages; + + /* Allocate pages for PID table in order of PID_TABLE_ORDER + * depending on KVM_MAX_VCPU_ID. Each PID entry is 8 bytes. + */ + pages = alloc_pages(GFP_KERNEL | __GFP_ZERO, PID_TABLE_ORDER); + + if (!pages) + return -ENOMEM; + + to_kvm_vmx(kvm)->pid_table = (void *)page_address(pages); + to_kvm_vmx(kvm)->pid_last_index = KVM_MAX_VCPU_ID; + } + return 0; } @@ -7575,6 +7624,14 @@ static bool vmx_check_apicv_inhibit_reasons(ulong bit) return supported & BIT(bit); } +static void vmx_vm_destroy(struct kvm *kvm) +{ + struct kvm_vmx *kvm_vmx = to_kvm_vmx(kvm); + + if (kvm_vmx->pid_table) + free_pages((unsigned long)kvm_vmx->pid_table, PID_TABLE_ORDER); +} + static struct kvm_x86_ops vmx_x86_ops __initdata = { .hardware_unsetup = hardware_unsetup, @@ -7585,6 +7642,7 @@ static struct kvm_x86_ops vmx_x86_ops __initdata = { .vm_size = sizeof(struct kvm_vmx), .vm_init = vmx_vm_init, + .vm_destroy = vmx_vm_destroy, .vcpu_create = vmx_create_vcpu, .vcpu_free = vmx_free_vcpu, @@ -7824,6 +7882,9 @@ static __init int hardware_setup(void) vmx_x86_ops.sync_pir_to_irr = NULL; } + if (!enable_apicv || !cpu_has_vmx_ipiv()) + enable_ipiv = 0; + if (cpu_has_vmx_tsc_scaling()) { kvm_has_tsc_control = true; kvm_max_tsc_scaling_ratio = KVM_VMX_TSC_MULTIPLIER_MAX; diff --git a/arch/x86/kvm/vmx/vmx.h b/arch/x86/kvm/vmx/vmx.h index 448006bd8fa7..80e854707725 100644 --- a/arch/x86/kvm/vmx/vmx.h +++ b/arch/x86/kvm/vmx/vmx.h @@ -351,6 +351,9 @@ struct kvm_vmx { unsigned int tss_addr; bool ept_identity_pagetable_done; gpa_t ept_identity_map_addr; + /* PID table for IPI virtualization */ + u64 *pid_table; + u16 pid_last_index; }; bool nested_vmx_allowed(struct kvm_vcpu *vcpu);