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Subject[RFC PATCH v2 34/69] KVM: x86: Add support for vCPU and device-scoped KVM_MEMORY_ENCRYPT_OP
Date
From: Sean Christopherson <sean.j.christopherson@intel.com>

Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Isaku Yamahata <isaku.yamahata@intel.com>
---
arch/x86/include/asm/kvm_host.h | 2 ++
arch/x86/kvm/x86.c | 12 ++++++++++++
2 files changed, 14 insertions(+)

diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index 9791c4bb5198..e3abf077f328 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -1377,7 +1377,9 @@ struct kvm_x86_ops {
int (*pre_leave_smm)(struct kvm_vcpu *vcpu, const char *smstate);
void (*enable_smi_window)(struct kvm_vcpu *vcpu);

+ int (*mem_enc_op_dev)(void __user *argp);
int (*mem_enc_op)(struct kvm *kvm, void __user *argp);
+ int (*mem_enc_op_vcpu)(struct kvm_vcpu *vcpu, void __user *argp);
int (*mem_enc_reg_region)(struct kvm *kvm, struct kvm_enc_region *argp);
int (*mem_enc_unreg_region)(struct kvm *kvm, struct kvm_enc_region *argp);
int (*vm_copy_enc_context_from)(struct kvm *kvm, unsigned int source_fd);
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index f7ae0a47e555..da9f1081cb03 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -4109,6 +4109,12 @@ long kvm_arch_dev_ioctl(struct file *filp,
case KVM_GET_SUPPORTED_HV_CPUID:
r = kvm_ioctl_get_supported_hv_cpuid(NULL, argp);
break;
+ case KVM_MEMORY_ENCRYPT_OP:
+ r = -EINVAL;
+ if (!kvm_x86_ops.mem_enc_op_dev)
+ goto out;
+ r = kvm_x86_ops.mem_enc_op_dev(argp);
+ break;
default:
r = -EINVAL;
break;
@@ -5263,6 +5269,12 @@ long kvm_arch_vcpu_ioctl(struct file *filp,
break;
}
#endif
+ case KVM_MEMORY_ENCRYPT_OP:
+ r = -EINVAL;
+ if (!kvm_x86_ops.mem_enc_op_vcpu)
+ goto out;
+ r = kvm_x86_ops.mem_enc_op_vcpu(vcpu, argp);
+ break;
default:
r = -EINVAL;
}
--
2.25.1
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