diff options
| -rw-r--r-- | arch/x86/kvm/svm/avic.c | 49 | ||||
| -rw-r--r-- | arch/x86/kvm/svm/svm.h | 4 |
2 files changed, 18 insertions, 35 deletions
diff --git a/arch/x86/kvm/svm/avic.c b/arch/x86/kvm/svm/avic.c index 0797b0b9b831..a65f61c5fc0c 100644 --- a/arch/x86/kvm/svm/avic.c +++ b/arch/x86/kvm/svm/avic.c @@ -173,10 +173,8 @@ void avic_vm_destroy(struct kvm *kvm) if (!enable_apicv) return; - if (kvm_svm->avic_logical_id_table_page) - __free_page(kvm_svm->avic_logical_id_table_page); - if (kvm_svm->avic_physical_id_table_page) - __free_page(kvm_svm->avic_physical_id_table_page); + free_page((unsigned long)kvm_svm->avic_logical_id_table); + free_page((unsigned long)kvm_svm->avic_physical_id_table); spin_lock_irqsave(&svm_vm_data_hash_lock, flags); hash_del(&kvm_svm->hnode); @@ -189,27 +187,19 @@ int avic_vm_init(struct kvm *kvm) int err = -ENOMEM; struct kvm_svm *kvm_svm = to_kvm_svm(kvm); struct kvm_svm *k2; - struct page *p_page; - struct page *l_page; u32 vm_id; if (!enable_apicv) return 0; - /* Allocating physical APIC ID table (4KB) */ - p_page = alloc_page(GFP_KERNEL_ACCOUNT | __GFP_ZERO); - if (!p_page) + kvm_svm->avic_physical_id_table = (void *)get_zeroed_page(GFP_KERNEL_ACCOUNT); + if (!kvm_svm->avic_physical_id_table) goto free_avic; - kvm_svm->avic_physical_id_table_page = p_page; - - /* Allocating logical APIC ID table (4KB) */ - l_page = alloc_page(GFP_KERNEL_ACCOUNT | __GFP_ZERO); - if (!l_page) + kvm_svm->avic_logical_id_table = (void *)get_zeroed_page(GFP_KERNEL_ACCOUNT); + if (!kvm_svm->avic_logical_id_table) goto free_avic; - kvm_svm->avic_logical_id_table_page = l_page; - spin_lock_irqsave(&svm_vm_data_hash_lock, flags); again: vm_id = next_vm_id = (next_vm_id + 1) & AVIC_VM_ID_MASK; @@ -243,12 +233,10 @@ static phys_addr_t avic_get_backing_page_address(struct vcpu_svm *svm) void avic_init_vmcb(struct vcpu_svm *svm, struct vmcb *vmcb) { struct kvm_svm *kvm_svm = to_kvm_svm(svm->vcpu.kvm); - phys_addr_t lpa = __sme_set(page_to_phys(kvm_svm->avic_logical_id_table_page)); - phys_addr_t ppa = __sme_set(page_to_phys(kvm_svm->avic_physical_id_table_page)); vmcb->control.avic_backing_page = avic_get_backing_page_address(svm); - vmcb->control.avic_logical_id = lpa; - vmcb->control.avic_physical_id = ppa; + vmcb->control.avic_logical_id = __sme_set(__pa(kvm_svm->avic_logical_id_table)); + vmcb->control.avic_physical_id = __sme_set(__pa(kvm_svm->avic_physical_id_table)); vmcb->control.avic_vapic_bar = APIC_DEFAULT_PHYS_BASE; if (kvm_apicv_activated(svm->vcpu.kvm)) @@ -262,7 +250,7 @@ static int avic_init_backing_page(struct kvm_vcpu *vcpu) struct kvm_svm *kvm_svm = to_kvm_svm(vcpu->kvm); struct vcpu_svm *svm = to_svm(vcpu); u32 id = vcpu->vcpu_id; - u64 *table, new_entry; + u64 new_entry; /* * Inhibit AVIC if the vCPU ID is bigger than what is supported by AVIC @@ -278,8 +266,8 @@ static int avic_init_backing_page(struct kvm_vcpu *vcpu) return 0; } - BUILD_BUG_ON((AVIC_MAX_PHYSICAL_ID + 1) * sizeof(*table) > PAGE_SIZE || - (X2AVIC_MAX_PHYSICAL_ID + 1) * sizeof(*table) > PAGE_SIZE); + BUILD_BUG_ON((AVIC_MAX_PHYSICAL_ID + 1) * sizeof(new_entry) > PAGE_SIZE || + (X2AVIC_MAX_PHYSICAL_ID + 1) * sizeof(new_entry) > PAGE_SIZE); if (WARN_ON_ONCE(!vcpu->arch.apic->regs)) return -EINVAL; @@ -298,18 +286,16 @@ static int avic_init_backing_page(struct kvm_vcpu *vcpu) return ret; } - /* Setting AVIC backing page address in the phy APIC ID table */ - table = page_address(kvm_svm->avic_physical_id_table_page); - /* Note, fls64() returns the bit position, +1. */ BUILD_BUG_ON(__PHYSICAL_MASK_SHIFT > fls64(AVIC_PHYSICAL_ID_ENTRY_BACKING_PAGE_MASK)); + /* Setting AVIC backing page address in the phy APIC ID table */ new_entry = avic_get_backing_page_address(svm) | AVIC_PHYSICAL_ID_ENTRY_VALID_MASK; - WRITE_ONCE(table[id], new_entry); + WRITE_ONCE(kvm_svm->avic_physical_id_table[id], new_entry); - svm->avic_physical_id_cache = &table[id]; + svm->avic_physical_id_cache = &kvm_svm->avic_physical_id_table[id]; return 0; } @@ -443,7 +429,7 @@ static int avic_kick_target_vcpus_fast(struct kvm *kvm, struct kvm_lapic *source if (apic_x2apic_mode(source)) avic_logical_id_table = NULL; else - avic_logical_id_table = page_address(kvm_svm->avic_logical_id_table_page); + avic_logical_id_table = kvm_svm->avic_logical_id_table; /* * AVIC is inhibited if vCPUs aren't mapped 1:1 with logical @@ -545,7 +531,6 @@ unsigned long avic_vcpu_get_apicv_inhibit_reasons(struct kvm_vcpu *vcpu) static u32 *avic_get_logical_id_entry(struct kvm_vcpu *vcpu, u32 ldr, bool flat) { struct kvm_svm *kvm_svm = to_kvm_svm(vcpu->kvm); - u32 *logical_apic_id_table; u32 cluster, index; ldr = GET_APIC_LOGICAL_ID(ldr); @@ -566,9 +551,7 @@ static u32 *avic_get_logical_id_entry(struct kvm_vcpu *vcpu, u32 ldr, bool flat) return NULL; index += (cluster << 2); - logical_apic_id_table = (u32 *) page_address(kvm_svm->avic_logical_id_table_page); - - return &logical_apic_id_table[index]; + return &kvm_svm->avic_logical_id_table[index]; } static void avic_ldr_write(struct kvm_vcpu *vcpu, u8 g_physical_id, u32 ldr) diff --git a/arch/x86/kvm/svm/svm.h b/arch/x86/kvm/svm/svm.h index 71e3c003580e..ec5d77d42a49 100644 --- a/arch/x86/kvm/svm/svm.h +++ b/arch/x86/kvm/svm/svm.h @@ -123,8 +123,8 @@ struct kvm_svm { /* Struct members for AVIC */ u32 avic_vm_id; - struct page *avic_logical_id_table_page; - struct page *avic_physical_id_table_page; + u32 *avic_logical_id_table; + u64 *avic_physical_id_table; struct hlist_node hnode; struct kvm_sev_info sev_info; |