From: Sean Christopherson <sean.j.christopherson@intel.com>
To: Marc Zyngier <maz@kernel.org>, James Hogan <jhogan@kernel.org>,
Paul Mackerras <paulus@ozlabs.org>,
Christian Borntraeger <borntraeger@de.ibm.com>,
Janosch Frank <frankja@linux.ibm.com>,
Paolo Bonzini <pbonzini@redhat.com>
Cc: James Morse <james.morse@arm.com>,
Julien Thierry <julien.thierry.kdev@gmail.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
David Hildenbrand <david@redhat.com>,
Cornelia Huck <cohuck@redhat.com>,
Sean Christopherson <sean.j.christopherson@intel.com>,
Vitaly Kuznetsov <vkuznets@redhat.com>,
Wanpeng Li <wanpengli@tencent.com>,
Jim Mattson <jmattson@google.com>, Joerg Roedel <joro@8bytes.org>,
linux-arm-kernel@lists.infradead.org,
kvmarm@lists.cs.columbia.edu, linux-mips@vger.kernel.org,
kvm-ppc@vger.kernel.org, kvm@vger.kernel.org,
linux-kernel@vger.kernel.org, Greg Kurz <groug@kaod.org>
Subject: [PATCH v2 10/45] KVM: x86: Move kvm_vcpu_init() invocation to common code
Date: Wed, 18 Dec 2019 13:54:55 -0800 [thread overview]
Message-ID: <20191218215530.2280-11-sean.j.christopherson@intel.com> (raw)
In-Reply-To: <20191218215530.2280-1-sean.j.christopherson@intel.com>
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 <sean.j.christopherson@intel.com>
---
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)
--
2.24.1
next prev parent reply other threads:[~2019-12-18 21:58 UTC|newest]
Thread overview: 75+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-18 21:54 [PATCH v2 00/45] KVM: Refactor vCPU creation Sean Christopherson
2019-12-18 21:54 ` [PATCH v2 01/45] KVM: PPC: Book3S HV: Uninit vCPU if vcore creation fails Sean Christopherson
2020-01-20 2:57 ` Paul Mackerras
2019-12-18 21:54 ` [PATCH v2 02/45] KVM: PPC: Book3S PR: Free shared page if mmu initialization fails Sean Christopherson
2020-01-20 3:00 ` Paul Mackerras
2019-12-18 21:54 ` [PATCH v2 03/45] KVM: x86: Free wbinvd_dirty_mask if vCPU creation fails Sean Christopherson
2019-12-18 21:54 ` [PATCH v2 04/45] KVM: VMX: Allocate VPID after initializing VCPU Sean Christopherson
2019-12-18 21:54 ` [PATCH v2 05/45] KVM: VMX: Use direct vcpu pointer during vCPU create/free Sean Christopherson
2019-12-18 21:54 ` [PATCH v2 06/45] KVM: SVM: " Sean Christopherson
2019-12-18 21:54 ` [PATCH v2 07/45] KVM: x86: Allocate vcpu struct in common x86 code Sean Christopherson
2019-12-18 21:54 ` [PATCH v2 08/45] KVM: x86: Move FPU allocation to " Sean Christopherson
2019-12-18 21:54 ` [PATCH v2 09/45] KVM: x86: Move allocation of pio_data page down a few lines Sean Christopherson
2019-12-18 21:54 ` Sean Christopherson [this message]
2019-12-18 21:54 ` [PATCH v2 11/45] KVM: PPC: e500mc: Add build-time assert that vcpu is at offset 0 Sean Christopherson
2019-12-18 21:54 ` [PATCH v2 12/45] KVM: PPC: Allocate vcpu struct in common PPC code Sean Christopherson
2020-01-20 4:04 ` Paul Mackerras
2020-01-21 11:05 ` Paolo Bonzini
2020-01-21 23:18 ` Sean Christopherson
2019-12-18 21:54 ` [PATCH v2 13/45] KVM: PPC: Book3S PR: Allocate book3s and shadow vcpu after common init Sean Christopherson
2019-12-18 21:54 ` [PATCH v2 14/45] KVM: PPC: e500mc: Move reset of oldpir below call to kvm_vcpu_init() Sean Christopherson
2019-12-18 21:55 ` [PATCH v2 15/45] KVM: PPC: Move kvm_vcpu_init() invocation to common code Sean Christopherson
2020-01-20 3:34 ` Paul Mackerras
2020-01-21 11:08 ` Paolo Bonzini
2020-01-20 3:56 ` Paul Mackerras
2019-12-18 21:55 ` [PATCH v2 16/45] KVM: MIPS: Use kvm_vcpu_cache to allocate vCPUs Sean Christopherson
2019-12-18 21:55 ` [PATCH v2 17/45] KVM: MIPS: Drop kvm_arch_vcpu_free() Sean Christopherson
2019-12-18 21:55 ` [PATCH v2 18/45] KVM: PPC: " Sean Christopherson
2019-12-18 21:55 ` [PATCH v2 19/45] KVM: arm: " Sean Christopherson
2019-12-18 21:55 ` [PATCH v2 20/45] KVM: x86: Remove spurious kvm_mmu_unload() from vcpu destruction path Sean Christopherson
2019-12-18 21:55 ` [PATCH v2 21/45] KVM: x86: Remove spurious clearing of async #PF MSR Sean Christopherson
2019-12-18 21:55 ` [PATCH v2 22/45] KVM: x86: Drop kvm_arch_vcpu_free() Sean Christopherson
2019-12-18 21:55 ` [PATCH v2 23/45] KVM: Remove kvm_arch_vcpu_free() declaration Sean Christopherson
2019-12-18 21:55 ` [PATCH v2 24/45] KVM: Add kvm_arch_vcpu_precreate() to handle pre-allocation issues Sean Christopherson
2019-12-19 19:28 ` Cornelia Huck
2019-12-18 21:55 ` [PATCH v2 25/45] KVM: s390: Move guts of kvm_arch_vcpu_init() into kvm_arch_vcpu_create() Sean Christopherson
2019-12-19 19:39 ` Cornelia Huck
2019-12-18 21:55 ` [PATCH v2 26/45] KVM: s390: Invoke kvm_vcpu_init() before allocating sie_page Sean Christopherson
2019-12-19 19:47 ` Cornelia Huck
2019-12-18 21:55 ` [PATCH v2 27/45] KVM: MIPS: Invoke kvm_vcpu_uninit() immediately prior to freeing vcpu Sean Christopherson
2019-12-18 21:55 ` [PATCH v2 28/45] KVM: x86: " Sean Christopherson
2019-12-18 21:55 ` [PATCH v2 29/45] KVM: Introduce kvm_vcpu_destroy() Sean Christopherson
2019-12-19 19:51 ` Cornelia Huck
2019-12-18 21:55 ` [PATCH v2 30/45] KVM: Move vcpu alloc and init invocation to common code Sean Christopherson
2019-12-20 9:33 ` Cornelia Huck
2019-12-20 15:53 ` Sean Christopherson
2019-12-20 16:00 ` Cornelia Huck
2020-01-26 3:02 ` Guenter Roeck
2019-12-18 21:55 ` [PATCH v2 31/45] KVM: Unexport kvm_vcpu_cache and kvm_vcpu_{un}init() Sean Christopherson
2019-12-20 9:39 ` Cornelia Huck
2019-12-18 21:55 ` [PATCH v2 32/45] KVM: Move initialization of preempt notifier to kvm_vcpu_init() Sean Christopherson
2019-12-20 9:50 ` Cornelia Huck
2019-12-18 21:55 ` [PATCH v2 33/45] KVM: x86: Move guts of kvm_arch_vcpu_setup() into kvm_arch_vcpu_create() Sean Christopherson
2019-12-18 21:55 ` [PATCH v2 34/45] KVM: MIPS: Move .vcpu_setup() call to kvm_arch_vcpu_create() Sean Christopherson
2019-12-18 21:55 ` [PATCH v2 35/45] KVM: s390: Manually invoke vcpu setup during kvm_arch_vcpu_create() Sean Christopherson
2019-12-20 10:04 ` Cornelia Huck
2019-12-20 15:56 ` Sean Christopherson
2019-12-20 16:02 ` Cornelia Huck
2019-12-20 16:22 ` Sean Christopherson
2019-12-18 21:55 ` [PATCH v2 36/45] KVM: PPC: BookE: Setup vcpu during kvmppc_core_vcpu_create() Sean Christopherson
2019-12-18 21:55 ` [PATCH v2 37/45] KVM: Drop kvm_arch_vcpu_setup() Sean Christopherson
2019-12-20 10:06 ` Cornelia Huck
2019-12-18 21:55 ` [PATCH v2 38/45] KVM: x86: Move all vcpu init code into kvm_arch_vcpu_create() Sean Christopherson
2019-12-18 21:55 ` [PATCH v2 39/45] KVM: MIPS: " Sean Christopherson
2019-12-18 21:55 ` [PATCH v2 40/45] KVM: ARM: " Sean Christopherson
2019-12-18 21:55 ` [PATCH v2 41/45] KVM: PPC: " Sean Christopherson
2020-01-20 3:46 ` Paul Mackerras
2020-01-21 11:12 ` Paolo Bonzini
2019-12-18 21:55 ` [PATCH v2 42/45] KVM: arm64: Free sve_state via arm specific hook Sean Christopherson
2019-12-18 21:55 ` [PATCH v2 43/45] KVM: Drop kvm_arch_vcpu_init() and kvm_arch_vcpu_uninit() Sean Christopherson
2019-12-20 10:13 ` Cornelia Huck
2019-12-18 21:55 ` [PATCH v2 44/45] KVM: Move putting of vcpu->pid to kvm_vcpu_destroy() Sean Christopherson
2019-12-20 10:16 ` Cornelia Huck
2019-12-18 21:55 ` [PATCH v2 45/45] KVM: Move vcpu->run page allocation out of kvm_vcpu_init() Sean Christopherson
2019-12-20 10:30 ` Cornelia Huck
2020-01-18 20:01 ` [PATCH v2 00/45] KVM: Refactor vCPU creation Paolo Bonzini
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20191218215530.2280-11-sean.j.christopherson@intel.com \
--to=sean.j.christopherson@intel.com \
--cc=borntraeger@de.ibm.com \
--cc=cohuck@redhat.com \
--cc=david@redhat.com \
--cc=frankja@linux.ibm.com \
--cc=groug@kaod.org \
--cc=james.morse@arm.com \
--cc=jhogan@kernel.org \
--cc=jmattson@google.com \
--cc=joro@8bytes.org \
--cc=julien.thierry.kdev@gmail.com \
--cc=kvm-ppc@vger.kernel.org \
--cc=kvm@vger.kernel.org \
--cc=kvmarm@lists.cs.columbia.edu \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mips@vger.kernel.org \
--cc=maz@kernel.org \
--cc=paulus@ozlabs.org \
--cc=pbonzini@redhat.com \
--cc=suzuki.poulose@arm.com \
--cc=vkuznets@redhat.com \
--cc=wanpengli@tencent.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).