BPF 起源 BPF 起源于1992, Steven McCanne 和 Van Jacobso 发布了论文: <<The BSD Packet Filter: A New Architecture for User-level Packet Capture>>1, 该论文 主要提供了一种包过滤的技术，比其当时的包过滤技术快20倍.1 abstract. 该包过滤...

10.4 Page Request Services The general model for a page request is as follows: A Function determines that it requires access to a page for which an ATS translation is not available. ...

PASID 简介 PASID overflow PASID 全称Process Address Space ID, PASID 同 requester ID结合，共同确定该request 所映射的地址空间。所以 PASID 和 ASID 类似, 均标识一个地址映射关系。但是ASID 用于 标识CPU 侧的memory request，而PASID 则标识PCIe end point 的D...

使用方法 core-to-core-latency USAGE: core-to-core-latency [OPTIONS] [ARGS] ARGS: <NUM_ITERATIONS> The number of iterations per sample [default: 1000] <NUM_SAMPLES> Th...

使用方法 整体命令: [-P <parallelism>] [-W <warmup>] [-N <repetitions>] [-t] len [stride...] 参数解释: P: 并行运行线程数 t: 是否连续访问 W: warmup N: repetitions len: 访问数据块最大大小(该程序会循环测试，从较小...

ATS Specification 10.1 ATS Architectural Overview Most contemporary system architectures make provisions for translating addresses from DMA (bus mastering) I/O Functions. In many implementations,...

In this chapter, we introduce enough about cache coherence to understand how consistency models interact with caches. We start in Section 2.1 by presenting the system model that we consider through...

1.2 COHERENCE (A.K.A., CACHE COHERENCE) Unless care is taken, a coherence problem can arise if multiple actors (e.g., multiple cores) have access to multiple copies of a datum (e.g., in multiple c...

This chapter delves into memory consistency models (a.k.a. memory models) that define the behavior of shared memory systems for programmers and implementors. These models define correctness so that...

文章主要来自AMD sdm `15 Secure Virtual Machine overflow SVM 提供了由硬件扩展，旨在实现高效, 经济的虚拟机系统。其功能主要分为 virtualization support 和 security support, 概述如下: virtualization support memory ...