From patchwork Wed Dec 18 21:54:55 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sean Christopherson X-Patchwork-Id: 11302207 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id EB4AA17EF for ; Wed, 18 Dec 2019 21:58:53 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 525B02467B for ; Wed, 18 Dec 2019 21:58:53 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="uKKBP280" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 525B02467B Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=Xh+ojDzSHKvj4pG0OftjOVeN3UJBEynbT8LzTs5nNy4=; b=uKKBP280dCSQgJ vI3I69BZ1xOVAHtGErjmtwKsjqO3ExzbQEKtL01bv4g4IxWN30/++J3ssAvae1e47FWSZXpfTPwz2 zjmYzflMZdGt5ZLD+D2DQOOqDa2YpqY/ltIFmYEn5iAHOhuawcTOgeWGaj/IqM7RHCjddoTzcPlb9 pIsIRCiB2sanKgQz/NJ2QnGnBKsPYQyhbnm9S5o9FOuRXjnsElvOw+1huX6SCcN4+ouv1hMF8f01a FE/mrtxd9wy/c00o6t7+XTqj7f7m5paXZz+rhF5rrCAvEEyrNr0DSZFsJjj/PzEgiRbk8Y4qp+59K sn7Dx/ut9E31ffskMZrA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1ihhLG-0007a6-0s; Wed, 18 Dec 2019 21:58:50 +0000 Received: from mga11.intel.com ([192.55.52.93]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1ihhIG-0004yN-0X for linux-arm-kernel@lists.infradead.org; Wed, 18 Dec 2019 21:55:46 +0000 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga102.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 18 Dec 2019 13:55:36 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.69,330,1571727600"; d="scan'208";a="222108049" Received: from sjchrist-coffee.jf.intel.com ([10.54.74.202]) by fmsmga001.fm.intel.com with ESMTP; 18 Dec 2019 13:55:36 -0800 From: Sean Christopherson To: Marc Zyngier , James Hogan , Paul Mackerras , Christian Borntraeger , Janosch Frank , Paolo Bonzini Subject: [PATCH v2 10/45] KVM: x86: Move kvm_vcpu_init() invocation to common code Date: Wed, 18 Dec 2019 13:54:55 -0800 Message-Id: <20191218215530.2280-11-sean.j.christopherson@intel.com> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20191218215530.2280-1-sean.j.christopherson@intel.com> References: <20191218215530.2280-1-sean.j.christopherson@intel.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191218_135544_340082_4B6C0797 X-CRM114-Status: GOOD ( 15.67 ) X-Spam-Score: -5.0 (-----) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (-5.0 points) pts rule name description ---- ---------------------- -------------------------------------------------- -5.0 RCVD_IN_DNSWL_HI RBL: Sender listed at https://www.dnswl.org/, high trust [192.55.52.93 listed in list.dnswl.org] -0.0 RCVD_IN_MSPIKE_H2 RBL: Average reputation (+2) [192.55.52.93 listed in wl.mailspike.net] 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kvm-ppc@vger.kernel.org, Wanpeng Li , kvm@vger.kernel.org, David Hildenbrand , Joerg Roedel , Cornelia Huck , linux-mips@vger.kernel.org, Sean Christopherson , linux-kernel@vger.kernel.org, Greg Kurz , James Morse , linux-arm-kernel@lists.infradead.org, Vitaly Kuznetsov , Suzuki K Poulose , kvmarm@lists.cs.columbia.edu, Julien Thierry , Jim Mattson Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org Move the kvm_cpu_{un}init() calls to common x86 code as an intermediate step to removing kvm_cpu_{un}init() altogether. Note, VMX'x alloc_apic_access_page() and init_rmode_identity_map() are per-VM allocations and are intentionally kept if vCPU creation fails. They are freed by kvm_arch_destroy_vm(). No functional change intended. Signed-off-by: Sean Christopherson --- arch/x86/include/asm/kvm_host.h | 2 +- arch/x86/kvm/svm.c | 13 +++---------- arch/x86/kvm/vmx/vmx.c | 19 ++++++------------- arch/x86/kvm/x86.c | 20 +++++++++++++++----- 4 files changed, 25 insertions(+), 29 deletions(-) diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index dbc2aa055942..deddd6fb198c 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -1045,7 +1045,7 @@ struct kvm_x86_ops { void (*vm_destroy)(struct kvm *kvm); /* Create, but do not attach this VCPU */ - int (*vcpu_create)(struct kvm *kvm, struct kvm_vcpu *vcpu, unsigned id); + int (*vcpu_create)(struct kvm_vcpu *vcpu); void (*vcpu_free)(struct kvm_vcpu *vcpu); void (*vcpu_reset)(struct kvm_vcpu *vcpu, bool init_event); diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index 1a5ead23e84b..84d1a28e99d6 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -2144,8 +2144,7 @@ static int avic_init_vcpu(struct vcpu_svm *svm) return ret; } -static int svm_create_vcpu(struct kvm *kvm, struct kvm_vcpu *vcpu, - unsigned int id) +static int svm_create_vcpu(struct kvm_vcpu *vcpu) { struct vcpu_svm *svm; struct page *page; @@ -2157,14 +2156,10 @@ static int svm_create_vcpu(struct kvm *kvm, struct kvm_vcpu *vcpu, BUILD_BUG_ON(offsetof(struct vcpu_svm, vcpu) != 0); svm = to_svm(vcpu); - err = kvm_vcpu_init(vcpu, kvm, id); - if (err) - return err; - err = -ENOMEM; page = alloc_page(GFP_KERNEL_ACCOUNT); if (!page) - goto uninit; + goto out; msrpm_pages = alloc_pages(GFP_KERNEL_ACCOUNT, MSRPM_ALLOC_ORDER); if (!msrpm_pages) @@ -2213,8 +2208,7 @@ static int svm_create_vcpu(struct kvm *kvm, struct kvm_vcpu *vcpu, __free_pages(msrpm_pages, MSRPM_ALLOC_ORDER); free_page1: __free_page(page); -uninit: - kvm_vcpu_uninit(vcpu); +out: return err; } @@ -2241,7 +2235,6 @@ static void svm_free_vcpu(struct kvm_vcpu *vcpu) __free_pages(virt_to_page(svm->msrpm), MSRPM_ALLOC_ORDER); __free_page(virt_to_page(svm->nested.hsave)); __free_pages(virt_to_page(svm->nested.msrpm), MSRPM_ALLOC_ORDER); - kvm_vcpu_uninit(vcpu); } static void svm_vcpu_load(struct kvm_vcpu *vcpu, int cpu) diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c index fd688b16e688..eea940330dd3 100644 --- a/arch/x86/kvm/vmx/vmx.c +++ b/arch/x86/kvm/vmx/vmx.c @@ -6672,11 +6672,9 @@ static void vmx_free_vcpu(struct kvm_vcpu *vcpu) free_vpid(vmx->vpid); nested_vmx_free_vcpu(vcpu); free_loaded_vmcs(vmx->loaded_vmcs); - kvm_vcpu_uninit(vcpu); } -static int vmx_create_vcpu(struct kvm *kvm, struct kvm_vcpu *vcpu, - unsigned int id) +static int vmx_create_vcpu(struct kvm_vcpu *vcpu) { struct vcpu_vmx *vmx; unsigned long *msr_bitmap; @@ -6685,10 +6683,6 @@ static int vmx_create_vcpu(struct kvm *kvm, struct kvm_vcpu *vcpu, BUILD_BUG_ON(offsetof(struct vcpu_vmx, vcpu) != 0); vmx = to_vmx(vcpu); - err = kvm_vcpu_init(vcpu, kvm, id); - if (err) - return err; - err = -ENOMEM; vmx->vpid = allocate_vpid(); @@ -6702,7 +6696,7 @@ static int vmx_create_vcpu(struct kvm *kvm, struct kvm_vcpu *vcpu, if (enable_pml) { vmx->pml_pg = alloc_page(GFP_KERNEL_ACCOUNT | __GFP_ZERO); if (!vmx->pml_pg) - goto uninit_vcpu; + goto free_vpid; } BUILD_BUG_ON(ARRAY_SIZE(vmx_msr_index) != NR_SHARED_MSRS); @@ -6747,7 +6741,7 @@ static int vmx_create_vcpu(struct kvm *kvm, struct kvm_vcpu *vcpu, vmx_disable_intercept_for_msr(msr_bitmap, MSR_IA32_SYSENTER_CS, MSR_TYPE_RW); vmx_disable_intercept_for_msr(msr_bitmap, MSR_IA32_SYSENTER_ESP, MSR_TYPE_RW); vmx_disable_intercept_for_msr(msr_bitmap, MSR_IA32_SYSENTER_EIP, MSR_TYPE_RW); - if (kvm_cstate_in_guest(kvm)) { + if (kvm_cstate_in_guest(vcpu->kvm)) { vmx_disable_intercept_for_msr(msr_bitmap, MSR_CORE_C1_RES, MSR_TYPE_R); vmx_disable_intercept_for_msr(msr_bitmap, MSR_CORE_C3_RESIDENCY, MSR_TYPE_R); vmx_disable_intercept_for_msr(msr_bitmap, MSR_CORE_C6_RESIDENCY, MSR_TYPE_R); @@ -6763,13 +6757,13 @@ static int vmx_create_vcpu(struct kvm *kvm, struct kvm_vcpu *vcpu, vmx_vcpu_put(vcpu); put_cpu(); if (cpu_need_virtualize_apic_accesses(vcpu)) { - err = alloc_apic_access_page(kvm); + err = alloc_apic_access_page(vcpu->kvm); if (err) goto free_vmcs; } if (enable_ept && !enable_unrestricted_guest) { - err = init_rmode_identity_map(kvm); + err = init_rmode_identity_map(vcpu->kvm); if (err) goto free_vmcs; } @@ -6801,8 +6795,7 @@ static int vmx_create_vcpu(struct kvm *kvm, struct kvm_vcpu *vcpu, free_loaded_vmcs(vmx->loaded_vmcs); free_pml: vmx_destroy_pml_buffer(vmx); -uninit_vcpu: - kvm_vcpu_uninit(vcpu); +free_vpid: free_vpid(vmx->vpid); return err; } diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index b3e367963b08..8973037eb2fa 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -9095,6 +9095,8 @@ void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu) kvm_x86_ops->vcpu_free(vcpu); + kvm_vcpu_uninit(vcpu); + free_cpumask_var(vcpu->arch.wbinvd_dirty_mask); kmem_cache_free(x86_fpu_cache, vcpu->arch.user_fpu); kmem_cache_free(x86_fpu_cache, vcpu->arch.guest_fpu); @@ -9116,12 +9118,20 @@ struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, if (!vcpu) return ERR_PTR(-ENOMEM); - r = kvm_x86_ops->vcpu_create(kvm, vcpu, id); - if (r) { - kmem_cache_free(kvm_vcpu_cache, vcpu); - return ERR_PTR(r); - } + r = kvm_vcpu_init(vcpu, kvm, id); + if (r) + goto free_vcpu; + + r = kvm_x86_ops->vcpu_create(vcpu); + if (r) + goto uninit_vcpu; return vcpu; + +uninit_vcpu: + kvm_vcpu_uninit(vcpu); +free_vcpu: + kmem_cache_free(kvm_vcpu_cache, vcpu); + return ERR_PTR(r); } int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu)