PCIe Native Hotplug Integration with ACPI-Based Hotplug / Linux Plumbers Conference: Developing the Kernel, Libraries and Utilities

PCIe Native Hotplug Integration with ACPI-Based Hotplug

This proposal has been accepted as a session.

Accepted Session

One Line Summary

Discussion on how to integrate the native PCIe hotplug (pciehp) with ACPI-based PCI hotplug (acpiphp).

Abstract

Currently, the native PCIe hotplug (pciehp) and the ACPI-based PCI hotplug (acpiphp) are mutually exclusive, which means that if one of them registers a hotplug slot, the other one will not be allowed to handle hotplug signalling for the device in that slot. That leads to problems on some systems and there seem to be reasons to remove that limitation and there’s a question how it should be done.

Presentation Materials

slides

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Speaker

Rafael Wysocki
Intel OTC
Biography

I am the maintainer of the Linux kernel’s core power management code (PM core), cpuidle, cpufreq, and the ACPI subsystem. I work at Intel Open Source Technology Center as a Software Engineer with focus on the Linux kernel. I have been actively contributing to the Linux kernel since January 2005, working on the suspend and hibernate subsystem, on power management in general (including runtime PM, PM QoS etc.), and on the ACPI and PCI subsystems.

Sessions
- * ACPI-based Hotplug of PCI and Other Devices
  - Title: ACPI-based Hotplug of PCI and Other Devices
  - Microconference: ACPI/PM, PCI subsystems I
  - Time: 10:15am
  - One Line Summary:
    Discussion on the status of support for ACPI-based hotplug of devices in the Linux kernel
  - slides
  - Speakers: Rafael Wysocki
- * PCIe Native Hotplug Integration with ACPI-Based Hotplug
  - Title: PCIe Native Hotplug Integration with ACPI-Based Hotplug
  - Microconference: ACPI/PM, PCI subsystems I
  - Time: 9:50am
  - One Line Summary:
    Discussion on how to integrate the native PCIe hotplug (pciehp) with ACPI-based PCI hotplug (acpiphp).
  - slides
  - Speakers: Rafael Wysocki
- * PM Interfaces Between User Space and the Kernel
  - Title: PM Interfaces Between User Space and the Kernel
  - Microconference: ACPI/PM, PCI subsystems I
  - Time: 11:05am
  - One Line Summary:
    Discussion on interfaces to use for communicating the needs of user space related to power management to the kernel.
  - slides
  - Speakers: Rafael Wysocki
- * ACPI vs DT
  - Title: ACPI vs DT
  - Microconference: ACPI/PM, PCI subsystems II
  - One Line Summary:
    ACPI vs Device Tree – Moving Forward: Discussion on device enumeration methods
  - Speakers: Rafael Wysocki

Linux Plumbers Conf 2013