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Tue, 28 Jul 2026 12:26:35 -0700 (PDT) From: Mathieu Poirier To: berrange@redhat.com, kchamart@redhat.com, pierrick.bouvier@oss.qualcomm.com, peter.maydell@linaro.org, mst@redhat.com, cohuck@redhat.com, pbonzini@redhat.com, eblake@redhat.com, armbru@redhat.com, lorenzo.pieralisi@linaro.org, gshan@redhat.com Cc: qemu-devel@nongnu.org, qemu-arm@nongnu.org, kvm@vger.kernel.org Subject: [RFC v2 01/24] linux-headers: Add RME related definitions Date: Tue, 28 Jul 2026 13:26:07 -0600 Message-ID: <20260728192630.240375-2-mathieu.poirier@linaro.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260728192630.240375-1-mathieu.poirier@linaro.org> References: <20260728192630.240375-1-mathieu.poirier@linaro.org> Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Jean-Philippe Brucker This is a temporary patch intended for testing purposes only. It provides definitions related to supporting Realms by the QEMU-VMM. Signed-off-by: Jean-Philippe Brucker Signed-off-by: Mathieu Poirier --- linux-headers/asm-arm64/kvm.h | 9 +++++++++ linux-headers/linux/kvm.h | 10 +++++++++- 2 files changed, 18 insertions(+), 1 deletion(-) diff --git a/linux-headers/asm-arm64/kvm.h b/linux-headers/asm-arm64/kvm.h index 6aefe7973814..4c08631ec7d2 100644 --- a/linux-headers/asm-arm64/kvm.h +++ b/linux-headers/asm-arm64/kvm.h @@ -208,6 +208,15 @@ struct kvm_arm_counter_offset { __u64 reserved; }; +#define KVM_ARM_RMI_POPULATE_FLAGS_MEASURE (1 << 0) +struct kvm_arm_rmi_populate { + __u64 base; + __u64 size; + __u64 source_uaddr; + __u32 flags; + __u32 reserved; +}; + #define KVM_ARM_TAGS_TO_GUEST 0 #define KVM_ARM_TAGS_FROM_GUEST 1 diff --git a/linux-headers/linux/kvm.h b/linux-headers/linux/kvm.h index dd52e2a65bfd..cdd5ad11f85a 100644 --- a/linux-headers/linux/kvm.h +++ b/linux-headers/linux/kvm.h @@ -689,14 +689,19 @@ struct kvm_enable_cap { * address size for the VM. Bits[7-0] are reserved for the guest * PA size shift (i.e, log2(PA_Size)). For backward compatibility, * value 0 implies the default IPA size, 40bits. + * + * Bits[30-31] are reserved for the VM type */ #define KVM_VM_TYPE_ARM_IPA_SIZE_MASK 0xffULL #define KVM_VM_TYPE_ARM_IPA_SIZE(x) \ ((x) & KVM_VM_TYPE_ARM_IPA_SIZE_MASK) +#define KVM_VM_TYPE_ARM_NORMAL 0 +#define KVM_VM_TYPE_ARM_REALM (1UL << 30) #define KVM_VM_TYPE_ARM_PROTECTED (1UL << 31) #define KVM_VM_TYPE_ARM_MASK (KVM_VM_TYPE_ARM_IPA_SIZE_MASK | \ - KVM_VM_TYPE_ARM_PROTECTED) + KVM_VM_TYPE_ARM_PROTECTED | \ + KVM_VM_TYPE_ARM_REALM) /* * ioctls for /dev/kvm fds: @@ -719,6 +724,8 @@ struct kvm_enable_cap { #define KVM_GET_EMULATED_CPUID _IOWR(KVMIO, 0x09, struct kvm_cpuid2) #define KVM_GET_MSR_FEATURE_INDEX_LIST _IOWR(KVMIO, 0x0a, struct kvm_msr_list) +#define KVM_ARM_RMI_POPULATE _IOWR(KVMIO, 0xd7, struct kvm_arm_rmi_populate) + /* * Extension capability list. */ @@ -986,6 +993,7 @@ struct kvm_enable_cap { #define KVM_CAP_S390_KEYOP 247 #define KVM_CAP_S390_VSIE_ESAMODE 248 #define KVM_CAP_S390_HPAGE_2G 249 +#define KVM_CAP_ARM_RMI 250 struct kvm_irq_routing_irqchip { __u32 irqchip; -- 2.43.0