公开(公告)号：US20200159670A1

公开(公告)日：2020-05-21

申请号：US16752754

申请日：2020-01-27

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

Inventor： Uwe BRANDT ,  Markus HELMS ,  Christian JACOBI ,  Markus KALTENBACH ,  Thomas KOEHLER ,  Frank LEHNERT

IPC: G06F12/1036 ,  G06F12/1009 ,  G06F9/455

Abstract: An address translation facility is provided for multiple virtualization levels, where a guest virtual address may be translated to a guest non-virtual address, the guest non-virtual address corresponding without translation to a host virtual address, and the host virtual address may be translated to a host non-virtual address, where translation within a virtualization level may be specified as a sequence of accesses to address translation tables. The address translation facility may include a first translation engine and a second translation engine, where the first and second translation engines each have capacity to perform address translation within a single virtualization level of the multiple virtualization levels. In operation, based on the first translation engine performing a guest level translation, the second translation engine may perform a host level translation of a resulting guest non-virtual address to a host non-virtual address based on the guest level translation by the first translation engine.

公开(公告)号：US20180260337A1

公开(公告)日：2018-09-13

申请号：US15798585

申请日：2017-10-31

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

Inventor： Uwe BRANDT ,  Markus HELMS ,  Christian JACOBI ,  Markus KALTENBACH ,  Thomas KOEHLER ,  Frank LEHNERT

IPC: G06F12/10

CPC classification number: G06F12/1036 ,  G06F9/45558 ,  G06F12/1009 ,  G06F2009/45583 ,  G06F2212/1016 ,  G06F2212/1056 ,  G06F2212/151 ,  G06F2212/651 ,  G06F2212/657 ,  G06F2212/681 ,  G06F2212/684

Abstract: An address translation facility is provided for multiple virtualization levels, where a guest virtual address may be translated to a guest non-virtual address, the guest non-virtual address corresponding without translation to a host virtual address, and the host virtual address may be translated to a host non-virtual address, where translation within a virtualization level may be specified as a sequence of accesses to address translation tables. The address translation facility may include a first translation engine and a second translation engine, where the first and second translation engines each have capacity to perform address translation within a single virtualization level of the multiple virtualization levels. In operation, based on the first translation engine performing a guest level translation, the second translation engine may perform a host level translation of a resulting guest non-virtual address to a host non-virtual address based on the guest level translation by the first translation engine.

公开(公告)号：US20190236024A1

公开(公告)日：2019-08-01

申请号：US16377509

申请日：2019-04-08

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

Inventor： Uwe BRANDT ,  Markus HELMS ,  Christian JACOBI ,  Markus KALTENBACH ,  Thomas KOEHLER ,  Frank LEHNERT

IPC: G06F12/1036 ,  G06F12/1009

CPC classification number: G06F12/1036 ,  G06F9/45558 ,  G06F12/1009 ,  G06F2009/45583 ,  G06F2212/1016 ,  G06F2212/1056 ,  G06F2212/151 ,  G06F2212/651 ,  G06F2212/657 ,  G06F2212/681 ,  G06F2212/684

Abstract: An address translation facility is provided for multiple virtualization levels, where a guest virtual address may be translated to a guest non-virtual address, the guest non-virtual address corresponding without translation to a host virtual address, and the host virtual address may be translated to a host non-virtual address, where translation within a virtualization level may be specified as a sequence of accesses to address translation tables. The address translation facility may include a first translation engine and a second translation engine, where the first and second translation engines each have capacity to perform address translation within a single virtualization level of the multiple virtualization levels. In operation, based on the first translation engine performing a guest level translation, the second translation engine may perform a host level translation of a resulting guest non-virtual address to a host non-virtual address based on the guest level translation by the first translation engine.

公开(公告)号：US20180276138A1

公开(公告)日：2018-09-27

申请号：US15465763

申请日：2017-03-22

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

Inventor： Uwe BRANDT ,  Markus HELMS ,  Christian JACOBI ,  Markus KALTENBACH ,  Thomas KOEHLER ,  Frank LEHNERT

IPC: G06F12/1009 ,  G06F12/0875

Abstract: A translation engine for a processor system to translate virtual memory addresses to physical addresses of a main memory of a computer system is provided, where a sequence of accesses to multiple address translation tables is performed to support a computer system virtualization level. The translation engine includes: a first pipeline having at least, a first pipeline stage to receive a value for an original address or an address translation table entry requested in a previous pass through the first pipeline; a second pipeline stage using the value as an operand in a translation operation eventually yielding the address translation result or yielding a table index to an entry in a next address translation table; and a third pipeline stage issuing a read request for the entry in the next address translation table.

公开(公告)号：US20180260336A1

公开(公告)日：2018-09-13

申请号：US15454243

申请日：2017-03-09

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

Inventor： Uwe BRANDT ,  Markus HELMS ,  Christian JACOBI ,  Markus KALTENBACH ,  Thomas KOEHLER ,  Frank LEHNERT

IPC: G06F12/1036 ,  G06F12/1009

CPC classification number: G06F12/1036 ,  G06F9/45558 ,  G06F12/1009 ,  G06F2009/45583 ,  G06F2212/1016 ,  G06F2212/1056 ,  G06F2212/151 ,  G06F2212/651 ,  G06F2212/657 ,  G06F2212/681 ,  G06F2212/684

Abstract: An address translation facility is provided for multiple virtualization levels, where a guest virtual address may be translated to a guest non-virtual address, the guest non-virtual address corresponding without translation to a host virtual address, and the host virtual address may be translated to a host non-virtual address, where translation within a virtualization level may be specified as a sequence of accesses to address translation tables. The address translation facility may include a first translation engine and a second translation engine, where the first and second translation engines each have capacity to perform address translation within a single virtualization level of the multiple virtualization levels. In operation, based on the first translation engine performing a guest level translation, the second translation engine may perform a host level translation of a resulting guest non-virtual address to a host non-virtual address based on the guest level translation by the first translation engine.

公开(公告)号：US20190236025A1

公开(公告)日：2019-08-01

申请号：US16377556

申请日：2019-04-08

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

Inventor： Uwe BRANDT ,  Markus HELMS ,  Christian JACOBI ,  Markus KALTENBACH ,  Thomas KOEHLER ,  Frank LEHNERT

IPC: G06F12/1036 ,  G06F12/1009

CPC classification number: G06F12/1036 ,  G06F9/45558 ,  G06F12/1009 ,  G06F2009/45583 ,  G06F2212/1016 ,  G06F2212/1056 ,  G06F2212/151 ,  G06F2212/651 ,  G06F2212/657 ,  G06F2212/681 ,  G06F2212/684

Abstract: An address translation facility is provided for multiple virtualization levels, where a guest virtual address may be translated to a guest non-virtual address, the guest non-virtual address corresponding without translation to a host virtual address, and the host virtual address may be translated to a host non-virtual address, where translation within a virtualization level may be specified as a sequence of accesses to address translation tables. The address translation facility may include a first translation engine and a second translation engine, where the first and second translation engines each have capacity to perform address translation within a single virtualization level of the multiple virtualization levels. In operation, based on the first translation engine performing a guest level translation, the second translation engine may perform a host level translation of a resulting guest non-virtual address to a host non-virtual address based on the guest level translation by the first translation engine.