公开(公告)号：US20250156366A1

公开(公告)日：2025-05-15

申请号：US18657823

申请日：2024-05-08

Applicant: Intel Corporation

Inventor： Cong ZHANG ,  Tao ZHAO ,  Yi Liu ,  Jian WANG ,  Fan WANG ,  Zhonghua SUN ,  Xin ZHANG ,  Di ZHANG

IPC: G06F13/42 ,  G06F13/40

Abstract: A method and system for optimizing overall throughput of a Peripheral Component Interconnect Express (PCIe)/Compute Express Link (CXL) host bridge. The PCIe/CXL host bridge includes a plurality of ports, and one or more devices are connected to the ports. Credits are initially allocated to the ports of the PCIe/CXL host bridge. A link status on the ports of the PCIe/CXL host bridge and/or a status of scheduled workloads on a host are then determined. The credits allocated to the ports of the PCIe/CXL host bridge are adjusted based on the link status and/or the status of scheduled workloads. A PCIe driver may detect the link status of each port of the PCIe/CXL host bridge and request to adjust the credits based on the link status. An orchestration software that is configured to schedule and switch workloads may request to adjust the credits based on the status of scheduled workloads.

公开(公告)号：US20210271481A1

公开(公告)日：2021-09-02

申请号：US17253053

申请日：2018-12-21

Applicant: Intel Corporation

Inventor： Kun Tian ,  Sanjay Kumar ,  Ashok Raj ,  Yi Liu ,  Rajesh M. Sankaran ,  Philip R. Lantz

IPC: G06F9/34 ,  G06F9/455 ,  G06F9/38 ,  G06F13/42 ,  G06F12/1009

Abstract: Process address space identifier virtualization uses hardware paging hint. The processing device (100) comprising: a processing core (110); and a translation circuit coupled to the processing core, the translation circuit to: receive a workload instruction from a guest application being executed by the processing device, the workload instruction comprising an untranslated guest process address space identifier (gPASID), a workload for an input/output (I/O) target device, and an identifier of a submission register on the I/O target device (410), access a paging data structure (PDS) associated with the guest application to retrieve a page table entry corresponding to the gPASID and the identifier of the submission register (420), determine a value of an I/O hint bit of the page table entry corresponding to the gPASID and the identifier of the submission register (430), responsive to determining that the I/O hint bit is enabled, keep the untranslated gPASID in the workload instruction (440), and provide the workload instruction to a work queue of the I/O target device (450)

公开(公告)号：US11461100B2

公开(公告)日：2022-10-04

申请号：US17253053

申请日：2018-12-21

Applicant: Intel Corporation

Inventor： Kun Tian ,  Sanjay Kumar ,  Ashok Raj ,  Yi Liu ,  Rajesh M. Sankaran ,  Philip R. Lantz

IPC: G06F9/34 ,  G06F9/38 ,  G06F9/455 ,  G06F12/1009 ,  G06F13/42

Abstract: Process address space identifier virtualization uses hardware paging hint. The processing device (100) comprising: a processing core (110); and a translation circuit coupled to the processing core, the translation circuit to: receive a workload instruction from a guest application being executed by the processing device, the workload instruction comprising an untranslated guest process address space identifier (gPASID), a workload for an input/output (I/O) target device, and an identifier of a submission register on the I/O target device (410), access a paging data structure (PDS) associated with the guest application to retrieve a page table entry corresponding to the gPASID and the identifier of the submission register (420), determine a value of an I/O hint bit of the page table entry corresponding to the gPASID and the identifier of the submission register (430), responsive to determining that the I/O hint bit is enabled, keep the untranslated gPASID in the workload instruction (440), and provide the workload instruction to a work queue of the I/O target device (450).