公开(公告)号：EP3884392B1

公开(公告)日：2024-07-17

申请号：EP19817861.8

申请日：2019-11-14

IPC: G06F12/1036 ,  G06F12/1009 ,  G06F12/109 ,  G06F12/08 ,  G06F9/50 ,  G06F12/02 ,  G06F12/126

CPC classification number: G06F2212/15120130101 ,  G06F2212/65120130101 ,  G06F2212/102420130101 ,  G06F2212/105220130101 ,  G06F2212/68320130101 ,  G06F12/1036 ,  G06F2212/65720130101 ,  G06F12/1009 ,  G06F12/109 ,  G06F2212/65420130101 ,  G06F2212/65220130101 ,  G06F2212/65620130101 ,  G06F12/08 ,  G06F12/126 ,  G06F9/5077 ,  G06F12/023

公开(公告)号：EP4418129A2

公开(公告)日：2024-08-21

申请号：EP24186493.3

申请日：2019-11-14

Applicant: Microsoft Technology Licensing, LLC

Inventor： Bak, Yevgeniy ,  Iyigun, Mehmet ,  Kishan, Arun U.

IPC: G06F12/126

CPC classification number: G06F2212/15120130101 ,  G06F2212/65120130101 ,  G06F2212/102420130101 ,  G06F2212/105220130101 ,  G06F2212/68320130101 ,  G06F12/1036 ,  G06F2212/65720130101 ,  G06F12/1009 ,  G06F12/109 ,  G06F2212/65420130101 ,  G06F2212/65220130101 ,  G06F2212/65620130101 ,  G06F12/08 ,  G06F12/126 ,  G06F9/5077 ,  G06F12/023

Abstract: To increase the speed with which the hierarchical levels of a Second Layer Address Table (SLAT) are traversed as part of a memory access where the guest physical memory of a virtual machine environment is backed by virtual memory assigned to one or more processes executing on a host computing device, one or more hierarchical levels of tables within the SLAT can be skipped or otherwise not referenced. While the SLAT can be populated with memory correlations at hierarchically higher-levels of tables, the page table of the host computing device, supporting the host computing device's provision of virtual memory, can maintain a corresponding contiguous set of memory correlations at the hierarchically lowest table level, thereby enabling the host computing device to page out, or otherwise manipulate, smaller chunks of memory. If such manipulation occurs, the SLAT can be repopulated with memory correlations at the hierarchically lowest table level.

公开(公告)号：EP4020238B1

公开(公告)日：2024-06-12

申请号：EP21197466.2

申请日：2021-09-17

IPC: G06F12/14 ,  G06F12/1036

CPC classification number: G06F12/1441 ,  G06F2212/105220130101 ,  G06F2212/65120130101 ,  G06F12/1036 ,  G06F2212/65720130101

公开(公告)号：EP3553665B1

公开(公告)日：2024-05-15

申请号：EP16925965.2

申请日：2016-12-28

IPC: G06F12/08 ,  G06F12/02 ,  G06F12/1009 ,  G06F12/1027

CPC classification number: G06F12/08 ,  G06F12/1009 ,  G06F12/1027 ,  G06F12/0238 ,  G06F2212/20220130101 ,  G06F2212/65120130101 ,  G06F2212/102120130101 ,  G06F2212/720120130101

公开(公告)号：EP4418129A3

公开(公告)日：2024-10-02

申请号：EP24186493.3

申请日：2019-11-14

Applicant: Microsoft Technology Licensing, LLC

Inventor： Bak, Yevgeniy ,  Iyigun, Mehmet ,  Kishan, Arun U.

IPC: G06F12/1009 ,  G06F12/109 ,  G06F9/50 ,  G06F9/455 ,  G06F12/1036 ,  G06F12/08 ,  G06F12/02 ,  G06F12/126

CPC classification number: G06F2212/15120130101 ,  G06F2212/65120130101 ,  G06F2212/102420130101 ,  G06F2212/105220130101 ,  G06F2212/68320130101 ,  G06F12/1036 ,  G06F2212/65720130101 ,  G06F12/1009 ,  G06F12/109 ,  G06F2212/65420130101 ,  G06F2212/65220130101 ,  G06F2212/65620130101 ,  G06F12/08 ,  G06F12/126 ,  G06F9/5077 ,  G06F12/023 ,  G06F9/45558

Abstract: To increase the speed with which the hierarchical levels of a Second Layer Address Table (SLAT) are traversed as part of a memory access where the guest physical memory of a virtual machine environment is backed by virtual memory assigned to one or more processes executing on a host computing device, one or more hierarchical levels of tables within the SLAT can be skipped or otherwise not referenced. While the SLAT can be populated with memory correlations at hierarchically higher-levels of tables, the page table of the host computing device, supporting the host computing device's provision of virtual memory, can maintain a corresponding contiguous set of memory correlations at the hierarchically lowest table level, thereby enabling the host computing device to page out, or otherwise manipulate, smaller chunks of memory. If such manipulation occurs, the SLAT can be repopulated with memory correlations at the hierarchically lowest table level.

公开(公告)号：EP4398138A3

公开(公告)日：2024-09-11

申请号：EP24170679.5

申请日：2016-05-13

Applicant: Intel Corporation

Inventor： Banginwar, Rajesh P. ,  Naropanth, Sumanth ,  Notalapati Prabhakara, Sunil Kumar ,  Singh, Surendra K. ,  Mohan, Arvind ,  Sahita, Ravi L. ,  Malhotra, Rahil ,  Bakshi, Aman ,  Kamma, Vasudevarao ,  Nayak, Jyothi ,  Thakkar, Vivek ,  Pinto, Royston A.

IPC: G06F9/455 ,  G06F12/02 ,  G06F12/109 ,  G06F12/14 ,  G06F21/53 ,  G06F21/57

CPC classification number: G06F9/45545 ,  G06F9/45558 ,  G06F2009/4558320130101 ,  G06F2009/4558720130101 ,  G06F21/57 ,  G06F12/023 ,  G06F12/109 ,  G06F2212/15120130101 ,  G06F2212/65120130101 ,  G06F12/1491 ,  G06F12/145 ,  G06F21/53 ,  G06F2212/105220130101 ,  G06F2221/214920130101

Abstract: Embodiments described herein relate to platform security. For example, an apparatus comprises circuitry to execute instructions of a trusted execution environment, an untrusted execution environment, and a hypervisor; security circuitry to execute firmware to perform security operations, the security circuitry to provide a key to be used for encryption of data associated with the trusted execution environment; and memory management circuitry. The memory management circuitry is to: provide access by the untrusted execution environment to a first one or more page tables to translate a first guest virtual address to a first guest physical address associated with the untrusted execution environment and to provide access by the hypervisor to a second one or more page tables to translate the guest physical address to a host physical address; determine an isolated physical memory region; associate a plurality of entries of a table in the isolated physical memory region with the trusted execution environment, each entry of the plurality of entries to store information corresponding to a page table entry of a third one or more page tables associated with the trusted execution environment, the information including a corresponding guest physical address, page attributes, and permissions; and access an entry of the plurality of entries to provide security for address translations associated with the trusted execution environment.

公开(公告)号：EP4278265B1

公开(公告)日：2024-05-01

申请号：EP22714327.8

申请日：2022-03-21

IPC: G06F12/0811 ,  G06F12/1027 ,  G06F11/36 ,  G06F11/30 ,  G06F11/34 ,  G06F12/14 ,  G06F12/1036

CPC classification number: G06F12/0811 ,  G06F12/1027 ,  G06F11/3636 ,  G06F2212/68320130101 ,  G06F2212/65120130101 ,  G06F2212/101620130101 ,  G06F12/1408 ,  G06F12/1036 ,  G06F2212/104420130101 ,  G06F11/3471 ,  G06F11/3037 ,  G06F2201/88520130101 ,  G06F11/3082

公开(公告)号：EP4441617A1

公开(公告)日：2024-10-09

申请号：EP22721449.1

申请日：2022-04-28

Applicant: ARM Limited

Inventor： GRISENTHWAITE, Richard Roy

IPC: G06F12/109 ,  G06F12/14 ,  G06F21/00 ,  G06F9/455

CPC classification number: G06F12/109 ,  G06F12/1475 ,  G06F12/1441 ,  G06F21/74 ,  G06F2009/4558320130101 ,  G06F9/45558 ,  G06F2212/65120130101 ,  G06F2212/15120130101 ,  G06F12/145 ,  G06F2212/65720130101 ,  G06F2212/101620130101 ,  G06F2212/105220130101 ,  G06F12/1036 ,  G06F12/1491

公开(公告)号：EP3716079B1

公开(公告)日：2024-10-02

申请号：EP20154463.2

申请日：2020-01-30

IPC: G06F12/1009 ,  G06F12/1036 ,  G06F12/109 ,  G06F12/14

CPC classification number: G06F12/109 ,  G06F2212/65720130101 ,  G06F12/1009 ,  G06F2212/65120130101 ,  G06F12/1036 ,  G06F12/1491 ,  G06F2212/105220130101

公开(公告)号：EP3764239B1

公开(公告)日：2024-09-11

申请号：EP18926256.1

申请日：2018-07-11

IPC: G06F12/14 ,  G06F12/1009 ,  G06F12/109 ,  G06F9/48 ,  G06F9/455

CPC classification number: G06F12/1009 ,  G06F2212/101620130101 ,  G06F12/1491 ,  G06F2212/105220130101 ,  G06F2212/65120130101 ,  G06F2212/65720130101 ,  G06F12/109 ,  G06F12/145 ,  G06F9/4856 ,  G06F9/45558 ,  G06F2009/4558320130101 ,  G06F2009/455720130101