[RFC PATCH v3 12/12] KVM: arm64: CCA: enable DA in realm create parameters

[Aneesh Kumar K.V (Arm)]

Now that we have all the required steps for DA in-place, enable
DA while creating realm.

Cc: Marc Zyngier <maz at kernel.org>
Cc: Catalin Marinas <catalin.marinas at arm.com>
Cc: Will Deacon <will at kernel.org>
Cc: Jonathan Cameron <Jonathan.Cameron at huawei.com>
Cc: Jason Gunthorpe <jgg at ziepe.ca>
Cc: Dan Williams <dan.j.williams at intel.com>
Cc: Alexey Kardashevskiy <aik at amd.com>
Cc: Samuel Ortiz <sameo at rivosinc.com>
Cc: Xu Yilun <yilun.xu at linux.intel.com>
Cc: Suzuki K Poulose <Suzuki.Poulose at arm.com>
Cc: Steven Price <steven.price at arm.com>
Signed-off-by: Aneesh Kumar K.V (Arm) <aneesh.kumar at kernel.org>
---
 arch/arm64/include/asm/rmi_smc.h | 1 +
 arch/arm64/kvm/rmi.c             | 3 +++
 2 files changed, 4 insertions(+)

diff --git a/arch/arm64/include/asm/rmi_smc.h b/arch/arm64/include/asm/rmi_smc.h
index 384bde2d423e..5598b19ffc1d 100644
--- a/arch/arm64/include/asm/rmi_smc.h
+++ b/arch/arm64/include/asm/rmi_smc.h
@@ -118,6 +118,7 @@ enum rmi_ripas {
 #define RMI_REALM_PARAM_FLAG_LPA2		BIT(0)
 #define RMI_REALM_PARAM_FLAG_SVE		BIT(1)
 #define RMI_REALM_PARAM_FLAG_PMU		BIT(2)
+#define RMI_REALM_PARAM_FLAG_DA			BIT(3)
 
 /*
  * Note many of these fields are smaller than u64 but all fields have u64
diff --git a/arch/arm64/kvm/rmi.c b/arch/arm64/kvm/rmi.c
index 5de49a47d782..328eef406419 100644
--- a/arch/arm64/kvm/rmi.c
+++ b/arch/arm64/kvm/rmi.c
@@ -703,6 +703,9 @@ static int realm_create_rd(struct kvm *kvm)
 	if (r)
 		goto out_undelegate_tables;
 
+	/* For now default enable DA */
+	if (rmi_has_feature(RMI_FEATURE_REGISTER_0_DA))
+		params->flags |= RMI_REALM_PARAM_FLAG_DA;
 	params_phys = virt_to_phys(params);
 
 	if (rmi_realm_create(rd_phys, params_phys)) {
-- 
2.43.0