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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-17 17:06:41 +07:00
KVM: x86: Move all vcpu init code into kvm_arch_vcpu_create()
Fold init() into create() now that the two are called back-to-back by common KVM code (kvm_vcpu_init() calls kvm_arch_vcpu_init() as its last action, and kvm_vm_ioctl_create_vcpu() calls kvm_arch_vcpu_create() immediately thereafter). This paves the way for removing kvm_arch_vcpu_init() entirely. No functional change intended. Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Sean Christopherson
Paolo Bonzini
parent
afede96df5
commit
95a0d01eef
@ -9181,11 +9181,78 @@ int kvm_arch_vcpu_precreate(struct kvm *kvm, unsigned int id)
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int kvm_arch_vcpu_create(struct kvm_vcpu *vcpu)
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{
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int ret;
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struct page *page;
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int r;
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ret = kvm_x86_ops->vcpu_create(vcpu);
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if (ret)
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return ret;
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vcpu->arch.emulate_ctxt.ops = &emulate_ops;
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if (!irqchip_in_kernel(vcpu->kvm) || kvm_vcpu_is_reset_bsp(vcpu))
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vcpu->arch.mp_state = KVM_MP_STATE_RUNNABLE;
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else
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vcpu->arch.mp_state = KVM_MP_STATE_UNINITIALIZED;
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kvm_set_tsc_khz(vcpu, max_tsc_khz);
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r = kvm_mmu_create(vcpu);
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if (r < 0)
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return r;
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if (irqchip_in_kernel(vcpu->kvm)) {
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vcpu->arch.apicv_active = kvm_x86_ops->get_enable_apicv(vcpu->kvm);
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r = kvm_create_lapic(vcpu, lapic_timer_advance_ns);
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if (r < 0)
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goto fail_mmu_destroy;
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} else
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static_key_slow_inc(&kvm_no_apic_vcpu);
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r = -ENOMEM;
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page = alloc_page(GFP_KERNEL | __GFP_ZERO);
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if (!page)
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goto fail_free_lapic;
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vcpu->arch.pio_data = page_address(page);
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vcpu->arch.mce_banks = kzalloc(KVM_MAX_MCE_BANKS * sizeof(u64) * 4,
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GFP_KERNEL_ACCOUNT);
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if (!vcpu->arch.mce_banks)
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goto fail_free_pio_data;
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vcpu->arch.mcg_cap = KVM_MAX_MCE_BANKS;
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if (!zalloc_cpumask_var(&vcpu->arch.wbinvd_dirty_mask,
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GFP_KERNEL_ACCOUNT))
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goto fail_free_mce_banks;
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vcpu->arch.user_fpu = kmem_cache_zalloc(x86_fpu_cache,
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GFP_KERNEL_ACCOUNT);
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if (!vcpu->arch.user_fpu) {
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pr_err("kvm: failed to allocate userspace's fpu\n");
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goto free_wbinvd_dirty_mask;
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}
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vcpu->arch.guest_fpu = kmem_cache_zalloc(x86_fpu_cache,
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GFP_KERNEL_ACCOUNT);
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if (!vcpu->arch.guest_fpu) {
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pr_err("kvm: failed to allocate vcpu's fpu\n");
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goto free_user_fpu;
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}
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fx_init(vcpu);
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vcpu->arch.guest_xstate_size = XSAVE_HDR_SIZE + XSAVE_HDR_OFFSET;
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vcpu->arch.maxphyaddr = cpuid_query_maxphyaddr(vcpu);
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vcpu->arch.pat = MSR_IA32_CR_PAT_DEFAULT;
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kvm_async_pf_hash_reset(vcpu);
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kvm_pmu_init(vcpu);
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vcpu->arch.pending_external_vector = -1;
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vcpu->arch.preempted_in_kernel = false;
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kvm_hv_vcpu_init(vcpu);
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r = kvm_x86_ops->vcpu_create(vcpu);
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if (r)
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goto free_guest_fpu;
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vcpu->arch.arch_capabilities = kvm_get_arch_capabilities();
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vcpu->arch.msr_platform_info = MSR_PLATFORM_INFO_CPUID_FAULT;
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@ -9195,6 +9262,22 @@ int kvm_arch_vcpu_create(struct kvm_vcpu *vcpu)
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kvm_init_mmu(vcpu, false);
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vcpu_put(vcpu);
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return 0;
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free_guest_fpu:
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kmem_cache_free(x86_fpu_cache, vcpu->arch.guest_fpu);
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free_user_fpu:
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kmem_cache_free(x86_fpu_cache, vcpu->arch.user_fpu);
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free_wbinvd_dirty_mask:
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free_cpumask_var(vcpu->arch.wbinvd_dirty_mask);
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fail_free_mce_banks:
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kfree(vcpu->arch.mce_banks);
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fail_free_pio_data:
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free_page((unsigned long)vcpu->arch.pio_data);
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fail_free_lapic:
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kvm_free_lapic(vcpu);
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fail_mmu_destroy:
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kvm_mmu_destroy(vcpu);
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return r;
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}
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void kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu)
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@ -9227,6 +9310,8 @@ void kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu)
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void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu)
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{
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int idx;
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kvmclock_reset(vcpu);
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kvm_x86_ops->vcpu_free(vcpu);
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@ -9234,6 +9319,17 @@ void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu)
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free_cpumask_var(vcpu->arch.wbinvd_dirty_mask);
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kmem_cache_free(x86_fpu_cache, vcpu->arch.user_fpu);
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kmem_cache_free(x86_fpu_cache, vcpu->arch.guest_fpu);
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kvm_hv_vcpu_uninit(vcpu);
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kvm_pmu_destroy(vcpu);
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kfree(vcpu->arch.mce_banks);
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kvm_free_lapic(vcpu);
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idx = srcu_read_lock(&vcpu->kvm->srcu);
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kvm_mmu_destroy(vcpu);
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srcu_read_unlock(&vcpu->kvm->srcu, idx);
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free_page((unsigned long)vcpu->arch.pio_data);
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if (!lapic_in_kernel(vcpu))
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static_key_slow_dec(&kvm_no_apic_vcpu);
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}
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void kvm_vcpu_reset(struct kvm_vcpu *vcpu, bool init_event)
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@ -9481,106 +9577,12 @@ EXPORT_SYMBOL_GPL(kvm_no_apic_vcpu);
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int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu)
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{
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struct page *page;
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int r;
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vcpu->arch.emulate_ctxt.ops = &emulate_ops;
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if (!irqchip_in_kernel(vcpu->kvm) || kvm_vcpu_is_reset_bsp(vcpu))
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vcpu->arch.mp_state = KVM_MP_STATE_RUNNABLE;
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else
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vcpu->arch.mp_state = KVM_MP_STATE_UNINITIALIZED;
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kvm_set_tsc_khz(vcpu, max_tsc_khz);
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r = kvm_mmu_create(vcpu);
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if (r < 0)
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return r;
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if (irqchip_in_kernel(vcpu->kvm)) {
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vcpu->arch.apicv_active = kvm_x86_ops->get_enable_apicv(vcpu->kvm);
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r = kvm_create_lapic(vcpu, lapic_timer_advance_ns);
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if (r < 0)
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goto fail_mmu_destroy;
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} else
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static_key_slow_inc(&kvm_no_apic_vcpu);
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r = -ENOMEM;
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page = alloc_page(GFP_KERNEL | __GFP_ZERO);
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if (!page)
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goto fail_free_lapic;
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vcpu->arch.pio_data = page_address(page);
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vcpu->arch.mce_banks = kzalloc(KVM_MAX_MCE_BANKS * sizeof(u64) * 4,
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GFP_KERNEL_ACCOUNT);
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if (!vcpu->arch.mce_banks)
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goto fail_free_pio_data;
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vcpu->arch.mcg_cap = KVM_MAX_MCE_BANKS;
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if (!zalloc_cpumask_var(&vcpu->arch.wbinvd_dirty_mask,
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GFP_KERNEL_ACCOUNT))
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goto fail_free_mce_banks;
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vcpu->arch.user_fpu = kmem_cache_zalloc(x86_fpu_cache,
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GFP_KERNEL_ACCOUNT);
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if (!vcpu->arch.user_fpu) {
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pr_err("kvm: failed to allocate userspace's fpu\n");
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goto free_wbinvd_dirty_mask;
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}
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vcpu->arch.guest_fpu = kmem_cache_zalloc(x86_fpu_cache,
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GFP_KERNEL_ACCOUNT);
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if (!vcpu->arch.guest_fpu) {
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pr_err("kvm: failed to allocate vcpu's fpu\n");
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goto free_user_fpu;
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}
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fx_init(vcpu);
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vcpu->arch.guest_xstate_size = XSAVE_HDR_SIZE + XSAVE_HDR_OFFSET;
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vcpu->arch.maxphyaddr = cpuid_query_maxphyaddr(vcpu);
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vcpu->arch.pat = MSR_IA32_CR_PAT_DEFAULT;
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kvm_async_pf_hash_reset(vcpu);
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kvm_pmu_init(vcpu);
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vcpu->arch.pending_external_vector = -1;
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vcpu->arch.preempted_in_kernel = false;
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kvm_hv_vcpu_init(vcpu);
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return 0;
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free_user_fpu:
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kmem_cache_free(x86_fpu_cache, vcpu->arch.user_fpu);
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free_wbinvd_dirty_mask:
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free_cpumask_var(vcpu->arch.wbinvd_dirty_mask);
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fail_free_mce_banks:
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kfree(vcpu->arch.mce_banks);
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fail_free_pio_data:
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free_page((unsigned long)vcpu->arch.pio_data);
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fail_free_lapic:
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kvm_free_lapic(vcpu);
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fail_mmu_destroy:
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kvm_mmu_destroy(vcpu);
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return r;
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}
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void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu)
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{
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int idx;
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kvm_hv_vcpu_uninit(vcpu);
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kvm_pmu_destroy(vcpu);
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kfree(vcpu->arch.mce_banks);
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kvm_free_lapic(vcpu);
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idx = srcu_read_lock(&vcpu->kvm->srcu);
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kvm_mmu_destroy(vcpu);
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srcu_read_unlock(&vcpu->kvm->srcu, idx);
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free_page((unsigned long)vcpu->arch.pio_data);
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if (!lapic_in_kernel(vcpu))
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static_key_slow_dec(&kvm_no_apic_vcpu);
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}
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void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu)
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