virt inclusion category: feature bugzilla: https://gitcode.com/openeuler/kernel/issues/10066 ---------------------------------------- Expose TLBID virtualization interface to userspace. Signed-off-by: Jinqian Yang <yangjinqian1@huawei.com> --- arch/arm64/kvm/arm.c | 33 ++++++++++++++++++++++++++++++++- 1 file changed, 32 insertions(+), 1 deletion(-) diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c index 7985f85ab3cf..061734d1ad95 100644 --- a/arch/arm64/kvm/arm.c +++ b/arch/arm64/kvm/arm.c @@ -467,6 +467,8 @@ int kvm_arch_init_vm(struct kvm *kvm, unsigned long type) bitmap_zero(kvm->arch.vcpu_features, KVM_VCPU_MAX_FEATURES); + kvm_arm_init_tlbidomain(kvm); + /* Initialise the realm bits after the generic bits are enabled */ if (kvm_is_realm(kvm)) { ret = kvm_init_realm_vm(kvm); @@ -511,6 +513,7 @@ void kvm_arch_destroy_vm(struct kvm *kvm) kvm_arm_teardown_hypercalls(kvm); kvm_destroy_realm(kvm); + free_tlbid_vdomain(kvm); } #ifdef CONFIG_ARM64_HISI_IPIV @@ -663,6 +666,12 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext) r = 0; break; #endif + case KVM_CAP_ARM_TLBIDOMAIN: + if (system_supports_tlbid()) + r = 1; + else + r = 0; + break; case KVM_CAP_ARM_RME: r = static_key_enabled(&kvm_rme_is_available); break; @@ -2152,7 +2161,9 @@ static int kvm_arch_vcpu_ioctl_vcpu_init(struct kvm_vcpu *vcpu, kvm_arm_pvtimer_status_set_active(vcpu, false); #endif - return 0; + ret = kvm_arm_tlbidomain_vcpu_init(vcpu); + + return ret; } static int kvm_arm_vcpu_set_attr(struct kvm_vcpu *vcpu, @@ -2403,6 +2414,17 @@ long kvm_arch_vcpu_ioctl(struct file *filp, return -EFAULT; return kvm_arm_vcpu_rmm_psci_complete(vcpu, &req); } + case KVM_ARM_VCPU_SET_VDOMAIN: { + struct kvm_arm_set_vdomain vdomain; + + if (!kvm_vcpu_initialized(vcpu)) + return -ENOEXEC; + + if (copy_from_user(&vdomain, argp, sizeof(vdomain))) + return -EFAULT; + + return kvm_arm_vcpu_set_vdomain(vcpu, &vdomain); + } default: r = -EINVAL; } @@ -2583,6 +2605,15 @@ int kvm_arch_vm_ioctl(struct file *filp, unsigned int ioctl, unsigned long arg) return -EFAULT; return kvm_vm_ioctl_get_reg_writable_masks(kvm, &range); } + case KVM_ARM_GET_VDOMAIN_NUM: { + struct kvm_arm_get_vdomain vdomain; + + kvm_arm_get_vdomain_num(kvm, &vdomain); + if (copy_to_user(argp, &vdomain, sizeof(vdomain))) + return -EFAULT; + + return 0; + } default: return -EINVAL; } -- 2.33.0