公开(公告)号：LT3123326T

公开(公告)日：2018-07-10

申请号：LT15711701

申请日：2015-03-16

Applicant: IBM

Inventor： GREINER DAN ,  FARRELL MARK ,  OSISEK DAMIAN LEO ,  SCHMIDT DONALD WILLIAM ,  BUSABA FADI YUSUF ,  KUBALA JEFFREY PAUL ,  BRADBURY JONATHAN DAVID ,  HELLER LISA CRANTON ,  SLEGEL TIMOTHY

IPC: G06F9/50 ,  G06F9/38

公开(公告)号：AU2015238662B8

公开(公告)日：2018-04-19

申请号：AU2015238662

申请日：2015-03-16

Applicant: IBM

Inventor： HELLER LISA CRANTON ,  BRADBURY JONATHAN DAVID ,  KUBALA JEFFREY PAUL ,  FARRELL MARK ,  OSISEK DAMIAN LEO ,  GREINER DAN ,  SLEGEL TIMOTHY ,  BUSABA FADI YUSUF ,  SCHMIDT DONALD WILLIAM ,  GAINEY JR CHARLES

IPC: G06F9/455 ,  G06F9/50

Abstract: A computer system includes a virtual machine (VM) configuration with one or more cores. Each core is enabled to operate in a single thread (ST) mode or a multithreading (MT) mode. The ST mode consists of a single thread and the MT mode consists of a plurality of threads on shared resources of a respective core. The computer system includes a core-oriented system control area (COSCA) having a common area representing all of the cores of the VM configuration and separate core description areas for each of the cores in the VM configuration. Each core description area indicates a location of one or more thread description areas each representing a thread within the respective core, and each thread description area indicates a location of a state description of the respective thread.

公开(公告)号：ZA201605466B

公开(公告)日：2017-08-30

申请号：ZA201605466

申请日：2016-08-05

Applicant: IBM

Inventor： GAINEY JR CHARLES (DECEASED) ,  SLEGEL TIMOTHY ,  HELLER LISA CRANTON ,  BRADBURY JONATHAN DAVID ,  KUBALA JEFFREY PAUL ,  BUSABA FADI YUSUF ,  SCHMIDT DONALD WILLIAM ,  OSISEK DAMIAN LEO ,  FARRELL MARK ,  GREINER DAN

Abstract: Embodiments relate to thread context restoration. One aspect is a multithreading computer system including a configuration with a core configurable between a single thread (ST) mode and a multithreading (MT) mode. The ST mode addresses a primary thread and the MT mode addresses the primary thread and one or more secondary threads on shared resources of the core. A multithreading facility is configured to control utilization of the configuration to perform a method including disabling one or more secondary threads based on switching from MT mode to ST mode. A thread context of secondary threads is made unavailable to programs. Based on a last-set program-specified maximum thread-id indicating MT, the thread context is obtained by a) executing a set MT instruction to resume the MT mode, and b) based on being in the resumed MT mode, accessing the thread context.

公开(公告)号：SG11201606090RA

公开(公告)日：2016-08-30

申请号：SG11201606090R

申请日：2015-03-20

Applicant: IBM

Inventor： HELLER LISA CRANTON ,  BUSABA FADI YUSUF ,  FARRELL MARK

IPC: G06F9/455 ,  G06F9/30 ,  G06F9/38 ,  G06F9/50

Abstract: According to one aspect, a computer system includes a configuration with a machine enabled to operate in a single thread (ST) mode and a multithreading (MT) mode. In addition, the machine includes physical threads. The machine is configured to perform a method that includes issuing a start-virtual-execution (start-VE) instruction to dispatch a guest entity having multiple logical threads on the core. The guest entity includes all or a part of a guest virtual machine (VM), and issuing is performed by a host running on one of the physical threads on the core in the ST mode. The executing of the start-VE instruction by the machine includes mapping each of the logical threads to a corresponding one of the physical threads, initializing each of the mapped physical threads with a state of the corresponding logical thread, and starting execution of the guest entity on the core in MT mode.

公开(公告)号：AU2015238517A1

公开(公告)日：2016-08-11

申请号：AU2015238517

申请日：2015-03-20

Applicant: IBM

Inventor： HELLER LISA CRANTON ,  BUSABA FADI YUSUF ,  FARRELL MARK

IPC: G06F9/455 ,  G06F9/30 ,  G06F9/38 ,  G06F9/50

Abstract: According to one aspect, a computer system includes a configuration with a machine enabled to operate in a single thread (ST) mode and a multithreading (MT) mode. In addition, the machine includes physical threads. The machine is configured to perform a method that includes issuing a start-virtual-execution (start- VE) instruction to dispatch a guest entity having multiple logical threads on the core. The guest entity includes all or a part of a guest virtual machine (VM), and issuing is performed by a host running on one of the physical threads on the core in the ST mode. The executing of the start- VE instruction by the machine includes mapping each of the logical threads to a corresponding one of the physical threads, initializing each of the mapped physical threads with a state of the corresponding logical thread, and starting execution of the guest entity on the core in MT mode.

公开(公告)号：AU2015238706A1

公开(公告)日：2016-08-04

申请号：AU2015238706

申请日：2015-03-06

Applicant: IBM

Inventor： HELLER LISA CRANTON ,  KUBALA JEFFREY PAUL ,  BUSABA FADI YUSUF ,  BRADBURY JONATHAN DAVID ,  FARRELL MARK ,  OSISEK DAMIAN LEO ,  GREINER DAN ,  SLEGEL TIMOTHY ,  SCHMIDT DONALD WILLIAM ,  GAINEY CHARLES ,  JACOBI CHRISTIAN

IPC: G06F9/48 ,  G06F9/30 ,  G06F9/50

Abstract: Embodiments relate to multithreading in a computer. An aspect is a computer including a configuration having a core which includes physical threads and is operable in single thread (ST) and multithreading (MT) modes. The computer also includes a host program configured to execute in the ST mode on the core to issue a start-virtual-execution (start-VE) instruction to dispatch a guest entity which includes a guest virtual machine (VM). The start-VE instruction is executed by the core and includes obtaining a state description, having a guest state, from a location specified by the start-VE instruction. The execution includes determining, based on the guest state, whether the guest entity includes a single guest thread or multiple guest threads, and starting the guest threads in the MT mode or ST mode based on the guest state and a determination of whether the guest entity includes a single guest thread or multiple guest threads.

公开(公告)号：CA2940982A1

公开(公告)日：2015-10-01

申请号：CA2940982

申请日：2015-03-16

Applicant: IBM

Inventor： HELLER LISA CRANTON ,  BRADBURY JONATHAN DAVID ,  KUBALA JEFFREY PAUL ,  FARRELL MARK ,  OSISEK DAMIAN LEO ,  GREINER DAN ,  SLEGEL TIMOTHY ,  BUSABA FADI YUSUF ,  SCHMIDT DONALD WILLIAM ,  GAINEY CHARLES JR

IPC: G06F9/46 ,  G06F9/455

Abstract: A computer system includes a virtual machine (VM) configuration with one or more cores. Each core is enabled to operate in a single thread (ST) mode or a multithreading (MT) mode. The ST mode consists of a single thread and the MT mode consists of a plurality of threads on shared resources of a respective core. The computer system includes a core-oriented system control area (COSCA) having a common area representing all of the cores of the VM configuration and separate core description areas for each of the cores in the VM configuration. Each core description area indicates a location of one or more thread description areas each representing a thread within the respective core, and each thread description area indicates a location of a state description of the respective thread.

公开(公告)号：CA2940923A1

公开(公告)日：2015-10-01

申请号：CA2940923

申请日：2015-03-20

Applicant: IBM

Inventor： HELLER LISA CRANTON ,  BUSABA FADI YUSUF ,  FARRELL MARK

IPC: G06F9/50 ,  G06F9/455

Abstract: According to one aspect, a computer system includes a configuration with a machine enabled to operate in a single thread (ST) mode and a multithreading (MT) mode. In addition, the machine includes physical threads. The machine is configured to perform a method that includes issuing a start-virtual-execution (start- VE) instruction to dispatch a guest entity having multiple logical threads on the core. The guest entity includes all or a part of a guest virtual machine (VM), and issuing is performed by a host running on one of the physical threads on the core in the ST mode. The executing of the start- VE instruction by the machine includes mapping each of the logical threads to a corresponding one of the physical threads, initializing each of the mapped physical threads with a state of the corresponding logical thread, and starting execution of the guest entity on the core in MT mode.