公开(公告)号：EP4020192A1

公开(公告)日：2022-06-29

申请号：EP21198783.9

申请日：2021-09-24

申请人： Intel Corporation

发明人： Rozas, Carlos ,  Liu, Fangfei ,  Zou, Xiang ,  McKeen, Francis ,  Brandt, Jason W. ,  Nuzman, Joseph ,  Alameldeen, Alaa ,  Basak, Abhishek ,  Constable, Scott ,  Unterluggauer, Thomas ,  Mallick, Asit ,  Fernandez, Matthew

IPC分类号： G06F9/38 ,  G06F9/30

摘要： Embodiments for dynamically mitigating speculation vulnerabilities are disclosed. In an embodiment, an apparatus includes decode circuitry and branch circuitry coupled to the decode circuitry. The decode circuitry is to decode a branch hardening instruction to mitigate vulnerability to a speculative execution attack. The branch circuitry is to be hardened in response to the branch hardening instruction.

公开(公告)号：EP4020278A1

公开(公告)日：2022-06-29

申请号：EP21197916.6

申请日：2021-09-21

申请人： INTEL Corporation

发明人： Alameldeen, Alaa ,  Rozas, Carlos ,  Liu, Fangfei ,  Zou, Xiang ,  McKeen, Francis ,  Brandt, Jason W. ,  Nuzman, Joseph ,  Basak, Abhishek ,  Constable, Scott ,  Unterluggauer, Thomas ,  Mallick, Asit ,  Fernandez, Matthew

IPC分类号： G06F21/55 ,  G06F21/75

摘要： Embodiments for dynamically mitigating speculation vulnerabilities are disclosed. In an embodiment, an apparatus includes decode circuitry and execution circuitry coupled to the decode circuitry. The decode circuitry is to decode a single instruction to mitigate vulnerability to a speculative execution attack. The execution circuitry is to be hardened in response to the single instruction.

公开(公告)号：EP2889794B1

公开(公告)日：2020-03-04

申请号：EP14194144.3

申请日：2014-11-20

申请人： Intel Corporation

发明人： Johnson, Simon ,  Mckeen, Francis ,  Scarlata, Vincent ,  Rozas, Carlos ,  Savagaonkar, Uday ,  Goldsmith, Michael ,  Brickell, Ernie

IPC分类号： G06F21/53 ,  G06F21/74

公开(公告)号：EP2889778B1

公开(公告)日：2018-08-08

申请号：EP14194759.8

申请日：2014-11-25

申请人： Intel Corporation

发明人： Goldsmith, Michael ,  Rozas, Carlos ,  Johnson, Simon ,  Scarlata, Vincent

IPC分类号： G06F12/14 ,  G06F9/46 ,  G06F21/53 ,  G06F21/72 ,  G06F21/60 ,  G06F21/71 ,  G06F21/79 ,  G06F12/084 ,  G06F12/08

CPC分类号： G06F12/084 ,  G06F9/468 ,  G06F12/1483 ,  G06F21/606 ,  G06F21/71 ,  G06F21/79 ,  G06F2212/608 ,  G06F2221/2141

摘要： Embodiments of an invention for sharing memory in a secure processing environment are disclosed. In one embodiment, a processor includes an instruction unit and an execution unit. The instruction unit is to receive an instruction to match an offer to make a page in an enclave page cache shareable to a bid to make the page shareable. The execution unit is to execute the instruction. Execution of the instruction includes making the page shareable.

公开(公告)号：EP4020277A1

公开(公告)日：2022-06-29

申请号：EP21197876.2

申请日：2021-09-21

申请人： INTEL Corporation

发明人： Brandt, Jason ,  Nuzman, Joseph ,  Mallick, Asit ,  Rozas, Carlos

IPC分类号： G06F21/55

摘要： Embodiments for dynamically mitigating speculation vulnerabilities are disclosed. In an embodiment, an apparatus includes speculation vulnerability detection hardware and execution hardware. The speculation vulnerability detection hardware is to detect (191) vulnerability to a speculative execution attack and, in connection with a detection of vulnerability to a speculative execution attack, to provide (192) an indication that data from a first operation is tainted. The execution hardware is to perform a second operation using the data if the second operation is to be performed non-speculatively and to prevent (194) performance of the second operation if the second operation is to be performed speculatively and the data is tainted.

公开(公告)号：EP2889777B1

公开(公告)日：2018-12-26

申请号：EP14193950.4

申请日：2014-11-19

申请人： Intel Corporation

发明人： Leslie-Hurd, Rebekah ,  Alexandrovich, Ilya ,  Anati, Ittai ,  Berenzon, Alex ,  Goldsmith, Michael ,  Johnson, Simon ,  McKeen, Francis ,  Rozas, Carlos ,  Savagaonkar, Uday ,  Scarlata, Vincent ,  Shanbhogue, Vedvyas ,  Smith, Wesley

IPC分类号： G06F12/14 ,  G06F12/0875 ,  G06F9/30 ,  G06F21/72 ,  G06F21/60

CPC分类号： G06F21/604 ,  G06F9/3004 ,  G06F12/0875 ,  G06F12/145 ,  G06F12/1466 ,  G06F12/1491 ,  G06F21/53 ,  G06F21/72 ,  G06F21/78 ,  G06F2221/2141

摘要： Embodiments of an invention for modifying memory permissions in a secure processing environment are disclosed. In one embodiment, a processor (200) includes an instruction unit (214, 224) and an execution unit (270, 280). The instruction unit is to receive an instruction to modify access permissions for a page in a secure enclave. The execution unit is to execute the instruction. Execution of the instruction includes setting new access permissions in an enclave page cache map entry (240). Furthermore, the page is immediately accessible from inside the secure enclave according to the new access permissions.

公开(公告)号：EP4020279A1

公开(公告)日：2022-06-29

申请号：EP21197926.5

申请日：2021-09-21

申请人： INTEL Corporation

发明人： Rozas, Carlos ,  Liu, Fangfei ,  Zou, Xiang ,  McKeen, Francis ,  Brandt, Jason W. ,  Nuzman, Joseph ,  Alameldeen, Alaa ,  Basak, Abhishek ,  Constable, Scott ,  Unterluggauer, Thomas ,  Mallick, Asit ,  Fernandez, Matthew

IPC分类号： G06F21/55 ,  G06F21/75

摘要： Embodiments for dynamically mitigating speculation vulnerabilities are disclosed. In an embodiment, an apparatus includes a decode circuitry and store circuitry coupled to the decode circuitry. The decode circuitry is to decode a store hardening instruction to mitigate vulnerability to a speculative execution attack. The store circuitry is to be hardened in response to the store hardening instruction.

公开(公告)号：EP4020188A1

公开(公告)日：2022-06-29

申请号：EP21197332.6

申请日：2021-09-17

申请人： Intel Corporation

发明人： Rozas, Carlos ,  Liu, Fangfei ,  Zou, Xiang ,  McKeen, Francis ,  Brandt, Jason W. ,  Nuzman, Joseph ,  Alameldeen, Alaa ,  Basak, Abhishek ,  Constable, Scott ,  Unterluggauer, Thomas ,  Mallick, Asit ,  Fernandez, Matthew

IPC分类号： G06F9/38 ,  G06F9/30 ,  G06F21/50

摘要： Embodiments for dynamically mitigating speculation vulnerabilities are disclosed. In an embodiment, an apparatus includes decode circuitry and load circuitry coupled to the decode circuitry. The decode circuitry is to decode a load hardening instruction to mitigate vulnerability to a speculative execution attack. The load circuitry is to be hardened in response to the load hardening instruction.

公开(公告)号：EP3699795A1

公开(公告)日：2020-08-26

申请号：EP20155110.8

申请日：2020-02-03

申请人： INTEL Corporation

发明人： Gabor, Ron ,  Alameldeen, Alaa ,  Basak, Abhishek ,  Liu, Fangfei ,  McKeen, Francis ,  Nuzman, Joseph ,  Rozas, Carlos ,  Yanover, Igor ,  Zou, Xiang

IPC分类号： G06F21/52 ,  G06F9/30 ,  G06F9/38 ,  G06F12/0806 ,  G06F12/1027 ,  G06F21/75

摘要： Embodiments of methods and apparatuses for restricted speculative execution are disclosed. In an embodiment, a processor includes configuration storage, an execution circuit, and a controller. The configuration storage is to store an indicator to enable a restricted speculative execution mode of operation of the processor, wherein the processor is to restrict speculative execution when operating in restricted speculative execution mode. The execution circuit is to perform speculative execution. The controller to restrict speculative execution by the execution circuit when the restricted speculative execution mode is enabled.

公开(公告)号：EP2889794A3

公开(公告)日：2015-08-05

申请号：EP14194144.3

申请日：2014-11-20

申请人： Intel Corporation

发明人： Johnson, Simon ,  Mckeen, Francis ,  Scarlata, Vincent ,  Rozas, Carlos ,  Savagaonkar, Uday ,  Goldsmith, Michael ,  Brickell, Ernie

IPC分类号： G06F21/53 ,  G06F21/74

摘要： Embodiments of an invention for offloading functionality from a secure processing environment are disclosed. In one embodiment, a processor includes an instruction unit and an execution unit. The instruction unit is to receive an instruction to initialize a secure enclave. The execution unit is to execute the instruction. Execution of the instruction includes verifying that a signature structure key matches a hardware key that permits functionality to be offloaded.