Circuit systems and methods for reducing power supply voltage droop

    公开(公告)号:US12255648B2

    公开(公告)日:2025-03-18

    申请号:US17350577

    申请日:2021-06-17

    Abstract: A circuit system includes a first integrated circuit die having a first group of circuits configured to perform a first set of operations. The circuit system also includes a second integrated circuit die having a second group of circuits configured to start performing a second set of operations with a delay after the first group of circuits starts performing the first set of operations to reduce power supply voltage droop. The operations performed by the first and second groups of circuits can be interleaved with a fixed or a variable delay. Logic circuits can be partitioned into the first and the second groups of circuits based on predicted switching activity of the logic circuits. Decoupling capacitors in integrated circuit dies can be coupled together to reduce droop in a supply voltage during a high current event.

    Scalable virtual machine operation inside trust domains within the trust domain architecture

    公开(公告)号:US12254341B2

    公开(公告)日:2025-03-18

    申请号:US18353694

    申请日:2023-07-17

    Abstract: Implementations describe a computing system that implements a plurality of virtual machines inside a trust domain (TD), enabled via a secure arbitration mode (SEAM) of the processor. A processor includes one or more registers to store a SEAM range of memory, a TD key identifier of a TD private encryption key. The processor is capable of initializing a trust domain resource manager (TDRM) to manage the TD, and a virtual machine monitor within the TD to manage the plurality of virtual machines therein. The processor is further capable of exclusively associating a plurality of memory pages with the TD, wherein the plurality of memory pages associated with the TD is encrypted with a TD private encryption key inaccessible to the TDRM. The processor is further capable of using the SEAM range of memory, inaccessible to the TDRM, to provide isolation between the TDRM and the plurality of virtual machines.

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