1. Overview This guide introduces the Realm Management Extension (RME), an extension to the architecture. RME is the hardware component of the Arm Confidential Compute Architecture (Arm CCA) which...

B2.3.4 RME Device Assignment The term Assignable Device Interface refers to a portion of a device that can be independently assigned to software executing in one of the Security states. An assigna...

ABSTRACT ARM recently introduced the Confidential Compute Architecture (CCA) as part of the upcoming ARMv9-A architecture. CCA enables the support of confidential virtual machines (cVMs) within a ...

overview 在intel sdm 4.1.2 Paging-Mode Enabling, 中提到: CR4.PAE and CR4.LA57 cannot be modified while either 4-level paging or 5-level paging is in use (when CR0.PG = 1 and IA32_EFEe.LME = 1 ). A...

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3.1 Software interface The SMMU has three interfaces that software uses: Memory-based data structures to map devices to translation tables which are used to translate client device addres...

Configuring the Arm GIC This section of the guide describes how to enable and configure a GICv3-compliant interrupt controller in a bare metal environment. For detailed register descriptions see t...

What is TrustZone? TrustZone is the name of the Security architecture in the Arm A-profile architecture. First introduced in Armv6K, TrustZone is also supported in Armv7-A and Armv8-A. TrustZone p...

virtio feature : VIRTIO_RING_F_EVENT_IDX 我们这里抽象下，先定义一个producer, consumer的模型, 将 event_idx定义为head，将vring.idx定义为tail, 即 consumer modify head producer modify tail(和vring.idx一样，表示producer下次要存储数据的位置) ...

overflow virtio: ABSTRACTION API virtio-vring virtqueue ops vring vring struct vring notify sample of handle VirtIO ...