diff --git a/arch/arm64/kvm/config.c b/arch/arm64/kvm/config.c
index e4ec1bda8dfc..bac5f49fdbde 100644
--- a/arch/arm64/kvm/config.c
+++ b/arch/arm64/kvm/config.c
@@ -1684,6 +1684,14 @@ static void __compute_hdfgwtr(struct kvm_vcpu *vcpu)
 		*vcpu_fgt(vcpu, HDFGWTR_EL2) |= HDFGWTR_EL2_MDSCR_EL1;
 }
 
+static void __compute_ich_hfgrtr(struct kvm_vcpu *vcpu)
+{
+	__compute_fgt(vcpu, ICH_HFGRTR_EL2);
+
+	/* ICC_IAFFIDR_EL1 *always* needs to be trapped when running a guest */
+	*vcpu_fgt(vcpu, ICH_HFGRTR_EL2) &= ~ICH_HFGRTR_EL2_ICC_IAFFIDR_EL1;
+}
+
 void kvm_vcpu_load_fgt(struct kvm_vcpu *vcpu)
 {
 	if (!cpus_have_final_cap(ARM64_HAS_FGT))
@@ -1705,7 +1713,7 @@ void kvm_vcpu_load_fgt(struct kvm_vcpu *vcpu)
 	}
 
 	if (cpus_have_final_cap(ARM64_HAS_GICV5_CPUIF)) {
-		__compute_fgt(vcpu, ICH_HFGRTR_EL2);
+		__compute_ich_hfgrtr(vcpu);
 		__compute_fgt(vcpu, ICH_HFGWTR_EL2);
 		__compute_fgt(vcpu, ICH_HFGITR_EL2);
 	}
diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c
index cd6deaf47315..d4531457ea02 100644
--- a/arch/arm64/kvm/sys_regs.c
+++ b/arch/arm64/kvm/sys_regs.c
@@ -681,6 +681,21 @@ static bool access_gic_dir(struct kvm_vcpu *vcpu,
 	return true;
 }
 
+static bool access_gicv5_iaffid(struct kvm_vcpu *vcpu, struct sys_reg_params *p,
+				const struct sys_reg_desc *r)
+{
+	if (p->is_write)
+		return undef_access(vcpu, p, r);
+
+	/*
+	 * For GICv5 VMs, the IAFFID value is the same as the VPE ID. The VPE ID
+	 * is the same as the VCPU's ID.
+	 */
+	p->regval = FIELD_PREP(ICC_IAFFIDR_EL1_IAFFID, vcpu->vcpu_id);
+
+	return true;
+}
+
 static bool trap_raz_wi(struct kvm_vcpu *vcpu,
 			struct sys_reg_params *p,
 			const struct sys_reg_desc *r)
@@ -3405,6 +3420,7 @@ static const struct sys_reg_desc sys_reg_descs[] = {
 	{ SYS_DESC(SYS_ICC_AP1R1_EL1), undef_access },
 	{ SYS_DESC(SYS_ICC_AP1R2_EL1), undef_access },
 	{ SYS_DESC(SYS_ICC_AP1R3_EL1), undef_access },
+	{ SYS_DESC(SYS_ICC_IAFFIDR_EL1), access_gicv5_iaffid },
 	{ SYS_DESC(SYS_ICC_DIR_EL1), access_gic_dir },
 	{ SYS_DESC(SYS_ICC_RPR_EL1), undef_access },
 	{ SYS_DESC(SYS_ICC_SGI1R_EL1), access_gic_sgi },
diff --git a/arch/arm64/kvm/vgic/vgic.h b/arch/arm64/kvm/vgic/vgic.h
index f2924f821197..7b7eed69d797 100644
--- a/arch/arm64/kvm/vgic/vgic.h
+++ b/arch/arm64/kvm/vgic/vgic.h
@@ -447,6 +447,11 @@ static inline bool kvm_has_gicv3(struct kvm *kvm)
 	return kvm_has_feat(kvm, ID_AA64PFR0_EL1, GIC, IMP);
 }
 
+static inline bool kvm_has_gicv5(struct kvm *kvm)
+{
+	return kvm_has_feat(kvm, ID_AA64PFR2_EL1, GCIE, IMP);
+}
+
 void vgic_v3_flush_nested(struct kvm_vcpu *vcpu);
 void vgic_v3_sync_nested(struct kvm_vcpu *vcpu);
 void vgic_v3_load_nested(struct kvm_vcpu *vcpu);