[PATCH v17 08/20] KVM: arm64: coco: Add a helper to check if a VM is confidential compute guest
COLD21d
From: Suzuki K Poulose <suzuki.poulose@arm.com>
Date: 2026-09-08 16:23:18
Also in:
kvm, kvmarm, linux-coco, lkml
Subsystem:
arm64 port (aarch64 architecture), kernel virtual machine for arm64 (kvm/arm64), the rest · Maintainers:
Catalin Marinas, Will Deacon, Marc Zyngier, Oliver Upton, Linus Torvalds
Revision v17 of 5 in this series.
Revisions (5)
Both protected VMs and Realms are additionally secured by the trusted hypervisor guarantees. Add a helper to detect if a given VM is a coco guest. Base this off the ordering of the VM flavor type. Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> --- arch/arm64/include/asm/kvm_host.h | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h
index 824a3383409c8..020aef5a1b698 100644
--- a/arch/arm64/include/asm/kvm_host.h
+++ b/arch/arm64/include/asm/kvm_host.h@@ -316,6 +316,7 @@ enum kvm_arm_vm_flavor { VM_NVHE, VM_VHE, VM_PKVM, /* Normal guests on PKVM */ + MARKER(__VM_CONFIDENTIAL), VM_PROTECTED_PKVM, /* Protected VM */ VM_REALM, /* CCA */ VM_FLAVOR_MAX,
@@ -1524,9 +1525,11 @@ struct kvm *kvm_arch_alloc_vm(void); #define __KVM_HAVE_ARCH_FLUSH_REMOTE_TLBS_RANGE +#define kvm_vm_is_confidential(kvm) ((kvm)->arch.vm_flavor >= __VM_CONFIDENTIAL) #define kvm_vm_is_protected(kvm) ((kvm)->arch.vm_flavor == VM_PROTECTED_PKVM) #define kvm_vm_is_realm(kvm) ((kvm)->arch.vm_flavor == VM_REALM) +#define vcpu_is_confidential(vcpu) kvm_vm_is_confidential((vcpu)->kvm) #define vcpu_is_protected(vcpu) kvm_vm_is_protected((vcpu)->kvm) #define vcpu_is_rec(vcpu) kvm_vm_is_realm((vcpu)->kvm)
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2.43.0