We are independent & ad-supported. We may earn a commission for purchases made through our links.
Advertiser Disclosure
Our website is an independent, advertising-supported platform. We provide our content free of charge to our readers, and to keep it that way, we rely on revenue generated through advertisements and affiliate partnerships. This means that when you click on certain links on our site and make a purchase, we may earn a commission. Learn more.
How We Make Money
We sustain our operations through affiliate commissions and advertising. If you click on an affiliate link and make a purchase, we may receive a commission from the merchant at no additional cost to you. We also display advertisements on our website, which help generate revenue to support our work and keep our content free for readers. Our editorial team operates independently of our advertising and affiliate partnerships to ensure that our content remains unbiased and focused on providing you with the best information and recommendations based on thorough research and honest evaluations. To remain transparent, we’ve provided a list of our current affiliate partners here.

What Is a Call Gate?

By T.S. Adams
Updated May 16, 2024
Our promise to you
EasyTechJunkie is dedicated to creating trustworthy, high-quality content that always prioritizes transparency, integrity, and inclusivity above all else. Our ensure that our content creation and review process includes rigorous fact-checking, evidence-based, and continual updates to ensure accuracy and reliability.

Our Promise to you

Founded in 2002, our company has been a trusted resource for readers seeking informative and engaging content. Our dedication to quality remains unwavering—and will never change. We follow a strict editorial policy, ensuring that our content is authored by highly qualified professionals and edited by subject matter experts. This guarantees that everything we publish is objective, accurate, and trustworthy.

Over the years, we've refined our approach to cover a wide range of topics, providing readers with reliable and practical advice to enhance their knowledge and skills. That's why millions of readers turn to us each year. Join us in celebrating the joy of learning, guided by standards you can trust.

Editorial Standards

At EasyTechJunkie, we are committed to creating content that you can trust. Our editorial process is designed to ensure that every piece of content we publish is accurate, reliable, and informative.

Our team of experienced writers and editors follows a strict set of guidelines to ensure the highest quality content. We conduct thorough research, fact-check all information, and rely on credible sources to back up our claims. Our content is reviewed by subject-matter experts to ensure accuracy and clarity.

We believe in transparency and maintain editorial independence from our advertisers. Our team does not receive direct compensation from advertisers, allowing us to create unbiased content that prioritizes your interests.

A call gate is a processor function in Intel™ central processing units (CPU). It allows for dynamic alteration of the privilege level of the CPU when utilizing certain instructions. This allows code and programs with fewer privileges to temporarily act as though they were higher privileged programs. The major advantage of a call gate is the program's ability to execute a high-level command on the system with a much faster response time than a call proceeding through an interrupt gate. One disadvantage is the potential for unauthorized programs to circumvent security measures through the use of call gates.

Think of a call gate like a back door in the processor through which higher level commands can be executed, such as the modification of information stored in memory. Although almost all programs on a computer have cause to execute these types of commands, most programs are necessarily restricted in their privileges by the operating system. This prevents indiscriminate manipulation of the computer by potentially malicious code. The operating system ensures that the routine calls going to the processor through the call gate are legitimate. This additional level of security protects the memory of the computer against most types of basic hacking threats.

Some viruses specifically assault computers' call gates, however. By posing as a legitimate program, worms and viruses can gain access to the call gate, allowing them to take control of the higher level functions of the computer. This can potentially compromise security and personal information on the system, illustrating the importance of constantly updating an operating system, as exploits to the call gate are often patched — repaired through revisions of the operating system — as soon as they are discovered.

Call gates are only used by certain processors produced during a limited span of time. Newer methods are generally faster than call gates, just as call gates are faster than traditional interrupts. The major drawback to these newer methods is that they only allow the buttressing of program privileges to a predetermined level, where as a call gate can decide what level of privilege to assign a program indiscriminately.

EasyTechJunkie is dedicated to providing accurate and trustworthy information. We carefully select reputable sources and employ a rigorous fact-checking process to maintain the highest standards. To learn more about our commitment to accuracy, read our editorial process.
Discussion Comments
EasyTechJunkie, in your inbox

Our latest articles, guides, and more, delivered daily.

EasyTechJunkie, in your inbox

Our latest articles, guides, and more, delivered daily.