The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 08, 2012
Filed:
Jun. 23, 2006
Ramkrishna V. Prakash, Austin, TX (US);
Surender V. Brahmaroutu, Round Rock, TX (US);
Ramkrishna V. Prakash, Austin, TX (US);
Surender V. Brahmaroutu, Round Rock, TX (US);
Dell Products L.P., Round Rock, TX (US);
Abstract
A method for virtualizing input/output whereby a back-end driver component running back-end in a privileged operating system address space configures an input/output adapter through a setup/control path is disclosed. The back-end driver component is used to register with the input/output adapter to allow for the receipt of information concerning a catastrophic event. Catastrophic event data is transmitted to an active front-end driver component running in a guest operating system address space, where a communication path was established between the active front-end driver component and the back-end driver component. The back-end driver component listens for requests from the active front-end driver component. Upon receipt, an input/output context association is established between an input/output context in the input/output adapter and the active front-end driver component. The association enables the guest operating system to perform an isolated input/output operation directly with the input/output adapter through a respective data input/output path.