Invention Grant
- Patent Title: Controlling use of data determined by a resolve-pending speculative operation
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Application No.: US17310008Application Date: 2019-10-25
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Publication No.: US12182261B2Publication Date: 2024-12-31
- Inventor: Alastair David Reid , Albin Pierrick Tonnerre , Frederic Claude Marie Piry , Peter Richard Greenhalgh , Ian Michael Caulfield , Timothy Hayes , Giacomo Gabrielli
- Applicant: Arm Limited
- Applicant Address: GB Cambridge
- Assignee: Arm Limited
- Current Assignee: Arm Limited
- Current Assignee Address: GB Cambridge
- Agency: NIXON & VANDERHYE P.C.
- Priority: GB1900430 20190111
- International Application: PCT/GB2019/053032 WO 20191025
- International Announcement: WO2020/144446 WO 20200716
- Main IPC: G06F21/55
- IPC: G06F21/55 ; G06F9/38 ; G06F21/75
Abstract:
A data processing apparatus is provided which controls the use of data in respect of a further operation. The data processing apparatus identifies whether data is trusted or untrusted by identifying whether or not the data was determined by a speculatively executed resolve-pending operation. A permission control unit is also provided to control how the data can be used in respect of a further operation according to a security policy while the speculatively executed operation is still resolve-pending.
Information query
