3/30/2023 0 Comments Indirection virtualizationBefore you do that, I wanted to add one rather important point. Having covered the basics, you can turn to something more practical and useful. The same applied with the creators of the OSI stack: virtualizing the physical layer, or the network layer, or now and days the virtualization of the transport layer with Web services. “Write once-run everywhere” was the motto, if I recall. Does this sound familiar to you? To me, that is exactly why the Java VM took off in the early 90’s. The fact of the matter is that Virtual Machines have been around since the mid-70’s with the good-old IBM super computers (now known as the AS/400) having implemented one so that the software developed for the machine need not be tied to the proprietary hardware and processors of the time. You are somewhat familiar with the concept, and some of us have actually used a Virtual Machine or two such as the Java Virtual Machine or the Microsoft Common Language Infrastructure. You have seen the ever-growing popularity of the Virtual Machines over the past decade. The fact is that everything you have known to be true is one or more layers of abstraction of the underlying pieces (in other words, virtualization). For those of us who still like to write code, the name Virtual Functions has a certain ring to it: It is a difficult but very powerful feature that, when used properly, can save lots of coding time. Polymorphism is the perfect example of code-level virtualization. You see and practice this every day as professionals in the field, when you write code, when you are setting up a network, and so forth. Let me start with the basics for those who are not familiar with the concept of virtualization.Ĭomputer Science theory 1: when in doubt, add another layer of indirection. The main question that you as a developer is asking yourself is, “Will virtualization save you development time and shorten your project life-cycle?” Virtualization 101 The main question you are asking yourself is, “How can a virtualized reduce the risk of project failure and better ensure on-time and on-budget delivery?” As developers, you need to be aware of this methodology and players in the market to better develop your application. > index bb7a92316fc8.My first attempt at writing this article failed miserably, mainly due to the fact that I have been involved with so many virtualization projects over the years that my first crack missed the basic questions which the article aimed to answer: What is Virtualization? Why is this term important to you, your organization, and potentially the livelihood and success of your project? Why should you care? Or, should you care at all? Or better yet, under what basic scenarios should you care?Īs an architect, system or software, virtualization is very important to the overall architecture of your project. > diff -git a/drivers/s390/virtio/virtio_ccw.c b/drivers/s390/virtio/virtio_ccw.c > 1 file changed, 25 insertions(+), 15 deletions(-) > (in particular for protected virtualization guests). > virtio_ccw_device to a memory area that is shared with the hypervisor > This will come in handy soon when we pull out the indicators from Subject: Re: virtio/s390: add indirection to indicators accessĭate: Wed, 16:31:35 +0200 Re: virtio/s390: add indirection to indicators access - Pierre Morel KVM Archive on help / color / mirror / Atom feed From: Pierre Morel
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