Alain Kagi

US Patent:

6907600, Jun 14, 2005

Filed:

Dec 27, 2000

Appl. No.:

09/752133

Inventors:

Gilbert Neiger - Portland OR, US
Stephen Chou - North Plainfield NJ, US
Erik Cota-Robles - Portland OR, US
Stalinselvaraj Jeyasingh - Portland OR, US
Alain Kagi - Portland OR, US
Michael Kozuch - Beaverton OR, US
Richard Uhlig - Hillsboro OR, US
Sebastian Schoenberg - Dresden, DE

Assignee:

Intel Corporation - Santa Clara CA

International Classification:

G06F009/45

US Classification:

717139, 717136, 717140, 717148, 717151, 711118, 711202, 711207, 718 1

Abstract:

In one embodiment, a method for supporting address translation in a virtual-machine environment includes creating a guest translation data structure to be used by a guest operating system for address translation operations, creating an active translation data structure based on the guest translation data structure, and periodically modifying the content of the active translation data structure to conform to the content of the guest translations data structure. The content of the active translation data structure is used by a processor to cache address translations in a translation-lookaside buffer (TLB).

US Patent:

6996748, Feb 7, 2006

Filed:

Jun 29, 2002

Appl. No.:

10/184798

Inventors:

Richard Uhlig - Hillsboro OR, US
Andrew V. Anderson - Hillsboro OR, US
Steve Bennett - Hillsboro OR, US
Erik Cota-Robles - Portland OR, US
Stalinselvaraj Jeyasingh - Portland OR, US
Alain Kagi - Portland OR, US
Gilbert Neiger - Portland OR, US

Assignee:

Intel Corporation - Santa Clara CA

International Classification:

G06F 11/00

US Classification:

714 38, 714 48

Abstract:

In one embodiment, fault information relating to a fault associated with the operation of guest software is received. Further, a determination is made as to whether the fault information satisfies one or more fault filtering criteria. If the determination is positive, the guest software is permitted to disregard the fault.

US Patent:

7020738, Mar 28, 2006

Filed:

Sep 30, 2003

Appl. No.:

10/676737

Inventors:

Gilbert Neiger - Portland OR, US
Stephen Chou - North Plainfield NJ, US
Erik Cota-Robles - Portland OR, US
Alain Kagi - Portland OR, US
Michael Kozuch - Beaverton OR, US
Richard Uhlig - Hillsboro OR, US
Sebastian Schoenberg - Dresden, DE

Assignee:

Intel Corporation - Santa Clara CA

International Classification:

G06F 13/00

US Classification:

711 6, 711165, 711203

Abstract:

One embodiment of the invention is method for resolving address space conflicts between a virtual machine monitor and a guest operating system. The method includes allocating an address space for the operating system and an address space for the monitor. The method also includes mapping a portion of the monitor into the address space allocated for the operating system and the address space allocated for the monitor, and locating another portion of the monitor in the address space allocated for the monitor. The method also includes detecting that the operating system attempts to access a region occupied by the portion of the monitor within the address space allocated for the operating system, and relocating that portion of the monitor within that address space to allow the operating system to access the region previously occupied by that portion of the monitor.

US Patent:

7035963, Apr 25, 2006

Filed:

Dec 27, 2000

Appl. No.:

09/752587

Inventors:

Gilbert Neiger - Portland OR, US
Stephen Chou - North Plainfield NJ, US
Erik Cota-Robles - Portland OR, US
Stalinselvaraj Jeyasingh - Portland OR, US
Alain Kagi - Portland OR, US
Michael Kozuch - Beaverton OR, US
Richard Uhlig - Hillsboro OR, US
Sebastian Schoenberg - Dresden, DE

Assignee:

Intel Corporation - Santa Clara CA

International Classification:

G06F 12/00

US Classification:

711 6, 709 1, 711165

Abstract:

In one embodiment, a method for resolving address space conflicts includes detecting that a guest operating system attempts to access a region occupied by a first portion of a virtual machine monitor and relocating the first portion of the virtual machine monitor within the first address space to allow the guest operating system to access the region previously occupied by the first portion of the virtual machine monitor.

US Patent:

7073042, Jul 4, 2006

Filed:

Dec 12, 2002

Appl. No.:

10/319900

Inventors:

Richard Uhlig - Hillsboro OR, US
Gilbert Neiger - Portland OR, US
Erik Cota-Robles - Portland OR, US
Stalinselvaraj Jeyasingh - Portland OR, US
Alain Kagi - Portland OR, US
Michael Kozuch - Export PA, US
Steven M Bennett - Hillsboro OR, US

Assignee:

Intel Corporation - Santa Clara CA

International Classification:

G06F 12/10

US Classification:

711207, 711163, 711203

Abstract:

In one embodiment, when it is determined that a modification of content of an active address translation data structure is required, an entry in the active address translation data structure is modified to conform to a corresponding entry in a guest address translation data structure. During the modification, a bit field including one or more access control indicators in the entry of the active address translation data structure is not overwritten with corresponding data from the guest address translation data structure.

US Patent:

7124327, Oct 17, 2006

Filed:

Jun 29, 2002

Appl. No.:

10/184774

Inventors:

Steve Bennett - Hillsboro OR, US
Andrew V. Anderson - Hillsboro OR, US
Stalinselvaraj Jeyasingh - Portland OR, US
Alain Kagi - Portland OR, US
Gilbert Neiger - Portland OR, US
Richard Uhlig - Hillsboro OR, US
Xiang Zou - Beaverton OR, US
Michael A. Kozuch - Beaverton OR, US

Assignee:

Intel Corporation - Santa Clara CA

International Classification:

G06F 11/00

US Classification:

714 38, 714 48

Abstract:

In one embodiment, fault information relating to a fault associated with the operation of guest software is received. Further, a determination is made as to whether the fault information satisfies one or more filtering criterion. If the determination is positive, control remains with the guest software and is not transferred to the virtual machine monitor (VMM).

US Patent:

7127548, Oct 24, 2006

Filed:

Apr 16, 2002

Appl. No.:

10/124641

Inventors:

Steve Bennett - Hillsboro OR, US
Andrew V. Anderson - Hillsboro OR, US
Erik Cota-Robles - Portland OR, US
Stalinselvaraj Jeyasingh - Portland OR, US
Alain Kagi - Portland OR, US
Gilbert Neiger - Portland OR, US
Richard Uhlig - Hillsboro OR, US
Michael A. Kozuch - Export PA, US

Assignee:

Intel Corporation - Santa Clara CA

International Classification:

G06F 12/00

US Classification:

711 6, 718 1

Abstract:

In one embodiment, a command pertaining to one or more portions of a register is received from guest software. Further, a determination is made as to whether the guest software has access to all of the requested portions of the register based on indicators within a mask field that correspond to the requested portions of the register. If the guest software has access to all of the requested portions of the register, the command received from the guest software is executed on the requested portions of the register.

US Patent:

7177967, Feb 13, 2007

Filed:

Sep 30, 2003

Appl. No.:

10/676890

Inventors:

Stalinselvaraj Jeyasingh - Beaverton OR, US
Andrew V. Anderson - Hillsboro OR, US
Steven M. Bennett - Hillsboro OR, US
Erik Cota-Robles - Portland OR, US
Alain Kagi - Portland OR, US
Gilbert Neiger - Portland OR, US
Richard Uhlig - Hillsboro OR, US

Assignee:

Intel Corporation - Santa Clara CA

International Classification:

G06F 13/24
G06F 13/26
G06F 9/445
G06F 12/00

US Classification:

710260, 710266, 710 48, 712224

Abstract:

In one embodiment, an apparatus includes a set of multiplex blocks coupled with an interrupt controller and multiple interrupt request lines, and a virtual machine monitor block (VMM) coupled to the set of multiplex blocks. Each multiplex block corresponds to a distinct interrupt request line. Each multiplex block is to route the interrupt request signal received via the corresponding interrupt request line either to the interrupt controller or the VMM block depending on a current configuration value of this multiplex block.