BACKGROUND Generally, the concept of virtualization in information processing systems allows multiple instances of one or more operating systems (each, an "OS") to run on a single information processing system, even though each OS is designed to…

BACKGROUND The present disclosure relates to the handling of interrupts in a environment that utilizes virtual machines, and, more specifically, to the steering of interrupts between multiple logical processors running virtual machines. The virtualiz…

BACKGROUND OF THE INVENTION The present invention relates to virtual machine implementations, and in particular to a safe general purpose virtual machine that generates optimized virtual machine computer programs that are executable in a general purp…

BACKGROUND OF THE INVENTION A conventional virtual-machine monitor (VMM) typically runs on a computer and presents to other software the abstraction of one or more virtual machines. Each virtual machine may function as a self-contained platform, runn…

BACKGROUND Virtualization technology enables a single host computer running a virtual machine monitor ("VMM") to present multiple abstractions and/or views of the host, such that the underlying hardware of the host appears as one or more indepen…

A method for allowing a protected mode kernel to service, in virtual 8086 mode, hardware interrupts which occur during execution of ring 0 protected mode code. When an interrupt occurs during execution of ring 0 code, the microprocessor copies the st…

BACKGROUND Generally, the concept of virtualization in information processing systems allows multiple instances of one or more operating systems (each, an "OS") to run on a single information processing system, even though each OS is designed to…

A hypervisor calculates the total number of processor cycles (the number of processor cycles of one or more physical processors) in a first length of time based on the sum of the operating frequencies of the respective physical processors and the fir…

BACKGROUND OF THE INVENTION This relates to Input/Output (I/O) performance in a host system having multiple processors, and more particularly, to efficient usage of multiple processors in handling I/O completions by using interrupt affinity schemes t…

本文主要为读论文Scalable Read-mostly Synchronization Using Passive Reader-Writer Locks的记录. 并将其在JOS上实现.其中包括lapic原理,IPI 实现. 本文中支持的新特性: 支持原子操作 支持读写锁 支持针对单一核心IPI 支持PRWLock Github : https://github.com/He11oLiu/JOS 论文阅读记录 研究背景 单核性能提升遇到瓶颈 转向多核提升性能 单核主要为计算密集型模型,多核主要…