[PATCH v19 13/20] KVM: arm64: CCA: Add VCPU load/put for Realms

[Suzuki K Poulose <suzuki.poulose@arm.com>]

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 0e2ab5311e4d8..bcc274df2a915 100644
--- a/arch/arm64/kvm/arm.c
+++ b/arch/arm64/kvm/arm.c
@@ -795,6 +795,13 @@ 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;
@@ -845,6 +852,12 @@ 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);
@@ -2202,6 +2215,11 @@ 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