[PATCH v18 15/23] KVM: arm64: CCA: Add VCPU load/put for Realms
From: Suzuki K Poulose <suzuki.poulose@arm.com>
Date: 2026-09-15 16:02:38
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
RMM controls the VCPU settings and most are hidden from the KVM, except for the VGIC and timer bits. A later patch would add syncing the VCPU state into the Realm REC related SMC parameters. Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> --- arch/arm64/kvm/arm.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+)
diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c
index ae09d0d9812c5..8defec75b8438 100644
--- a/arch/arm64/kvm/arm.c
+++ b/arch/arm64/kvm/arm.c@@ -810,6 +810,13 @@ static void pkvm_vcpu_load(struct kvm_vcpu *vcpu) &vcpu->arch.vgic_cpu.vgic_v3); } +static void realm_vcpu_load(struct kvm_vcpu *vcpu) +{ + kvm_timer_vcpu_load(vcpu); + kvm_vgic_load(vcpu); + vcpu_set_wfx_traps(vcpu); +} + void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu) { vcpu->cpu = cpu;
@@ -860,6 +867,12 @@ static void pkvm_vcpu_put(struct kvm_vcpu *vcpu) kvm_vcpu_pmu_restore_host(vcpu); } +static void realm_vcpu_put(struct kvm_vcpu *vcpu) +{ + kvm_timer_vcpu_put(vcpu); + kvm_vgic_put(vcpu); +} + void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu) { vcpu->arch.vcpu_ops->vcpu_put(vcpu);
@@ -2217,6 +2230,11 @@ static const struct kvm_vcpu_ops pkvm_vcpu_ops = { .vcpu_put = pkvm_vcpu_put, }; +static const struct kvm_vcpu_ops realm_vcpu_ops = { + .vcpu_load = realm_vcpu_load, + .vcpu_put = realm_vcpu_put, +}; + #define KVM_VCPU_OPS(flavor, ops) \ [(flavor)] = (ops)
--
2.43.0