Follow Techotopia on Twitter

On-line Guides
All Guides
eBook Store
iOS / Android
Linux for Beginners
Office Productivity
Linux Installation
Linux Security
Linux Utilities
Linux Virtualization
Linux Kernel
System/Network Admin
Scripting Languages
Development Tools
Web Development
GUI Toolkits/Desktop
Mail Systems
Eclipse Documentation

How To Guides
General System Admin
Linux Security
Linux Filesystems
Web Servers
Graphics & Desktop
PC Hardware
Problem Solutions
Privacy Policy




Xen 3.0 Virtualization Interface Guide
Prev Home Next

A.9 IO Configuration

Domains with physical device access (i.e. driver domains) receive limited access to certain PCI devices (bus address space and interrupts). However many guest operating systems attempt to determine the PCI configuration by directly access the PCI BIOS, which cannot be allowed for safety.

Instead, Xen provides the following hypercall:

physdev_op(void *physdev_op)

Set and query IRQ configuration details, set the system IOPL, set the TSS IO bitmap.

For examples of using physdev_op(), see the Xen-specific PCI code in the linux sparse tree.

Xen 3.0 Virtualization Interface Guide
Prev Home Next

  Published under the terms of the GNU General Public License Design by Interspire