linux-kernel - [RFC PATCH v1 36/38] KVM: arm64: CCA: enable DA in realm create parameters

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20250728135216.48084-37-aneesh.kumar@kernel.org>
Date: Mon, 28 Jul 2025 19:22:13 +0530
From: "Aneesh Kumar K.V (Arm)" <aneesh.kumar@...nel.org>
To: linux-coco@...ts.linux.dev,
	kvmarm@...ts.linux.dev
Cc: linux-pci@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	aik@....com,
	lukas@...ner.de,
	Samuel Ortiz <sameo@...osinc.com>,
	Xu Yilun <yilun.xu@...ux.intel.com>,
	Jason Gunthorpe <jgg@...pe.ca>,
	Suzuki K Poulose <Suzuki.Poulose@....com>,
	Steven Price <steven.price@....com>,
	Catalin Marinas <catalin.marinas@....com>,
	Marc Zyngier <maz@...nel.org>,
	Will Deacon <will@...nel.org>,
	Oliver Upton <oliver.upton@...ux.dev>,
	"Aneesh Kumar K.V (Arm)" <aneesh.kumar@...nel.org>
Subject: [RFC PATCH v1 36/38] KVM: arm64: CCA: enable DA in realm create parameters

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

Signed-off-by: Aneesh Kumar K.V (Arm) <aneesh.kumar@...nel.org>
---
 arch/arm64/include/asm/rmi_smc.h | 1 +
 arch/arm64/kvm/rme.c             | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/arch/arm64/include/asm/rmi_smc.h b/arch/arm64/include/asm/rmi_smc.h
index ab169b375198..f664954a2a91 100644
--- a/arch/arm64/include/asm/rmi_smc.h
+++ b/arch/arm64/include/asm/rmi_smc.h
@@ -112,6 +112,7 @@ 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/rme.c b/arch/arm64/kvm/rme.c
index 11c8d47e3e9b..394d1534e6c2 100644
--- a/arch/arm64/kvm/rme.c
+++ b/arch/arm64/kvm/rme.c
@@ -695,6 +695,8 @@ static int realm_create_rd(struct kvm *kvm)
 	if (r)
 		goto out_undelegate_tables;
 
+	/* For now default enable 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