Patent ID: 6931471

Claim:
A method in a computer system having physical pages of memory subject to access by input/output (“I/O”) devices, the method comprising: selecting, responsive to a request that data be moved from a first one of the physical pages to another one of the physical pages, an entry for the first physical page in a certain table, wherein the table has entries associating the physical pages with the I/O devices and the selected entry indicates an association of the first physical page and one of the I/O devices; disabling arbitration for the selected I/O device, so that I/O operations for the I/O device are temporarily disabled; moving the data from the first physical page to a second one of the physical pages and updating the entry in the table to reflect a new association between the I/O device and the second physical page; and re-enabling the arbitration, so that I/O operations with the I/O device are re-enabled.