Linux Plumbers ACPI/PM, PCI Microconference
Linux Plumbers has approved an ACPI/PM, PCI microconference. The overview page is here: http://wiki.linuxplumbersconf.org/2013:pci_subsystem We would like to start receiving volunteers for presenting topics of interest. There is a lot of activity in these subsystems so please respond by submitting presentation or discussion proposals that you would be willing to cover for consideration. You should also feel free to submit ideas as proposals that others could cover. The instructions for submitting ideas should be at: http://www.linuxplumbersconf.org/2013/submitting-topic/ This is the "Plumbers" conference so topics concerning userspace interaction with the kernel and not just topics concerning pure kernel subsystem internals would be greatly welcomed. As a possible aid towards promoting topics for submissions we have listed a few candidates that seem to meet the criteria in the microconference proposals wiki located at http://wiki.linuxplumbersconf.org/2013:pci_subsystem Last year, we had a good discussion on general issues in PCI space - that also might be worth giving updates on. If you have topics that you would like to add, wait until the instructions get posted at the link above. If you are impatient, feel free to email me directly (but probably best to drop the broad mailing lists from the reply). Thanks! Len, Bjorn, Myron, Rafael Yinghai - An update on host bridge hot-add capabilities, what is in place and what still remains to be done, would seem like a good topic. Shuah - You brought up the idea about "Converting drivers from Legacy PM ops to dev_pm_ops"; would you like to present what you have done/encountered so far? -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
2013 Linux Plumbers ACPI/PM, PCI Microconference proposal call for participaton
All: We would like to hold a combined ACPI/PM, PCI focused microconference as part of this year's Linux Plumbers conference but first we need to show that there is enough interest and material that needs covered. There is a lot of activity in these subsystems so please respond by submitting presentation or discussion proposals that you would be willing to cover for consideration (respond to this mail on the linux-pci list for tracking purposes please). You should also feel free to submit ideas as proposals that others could cover. This is the "Plumbers" conference so topics concerning userspace interaction with the kernel and not just topics concerning pure kernel subsystem internals would be greatly welcomed. The initial call[1] only produced two responses. We understand that everyone is busy but without proposals the program committee will not be able to select this topic for approval - so please step up. If approved by the program committee, we will give precedence to proposals that bring up current issues that need attention, help, or resolution. We would like for the majority of the microconference to be "working session discussions" in which a current issues in/with the ACPI/PM and PCI subsystem space that needs solving are introduced and then opened up for live discussion by attendees - much like what took place last year during the Kernel Summit's PCI miniconf. As a possible aid towards promoting topics for submissions we have listed a few candidates that seem to meet the criteria in the microconference proposals wiki located at http://wiki.linuxplumbersconf.org/2013:pci_subsystem Please feel free to forward this invitation on to any others, or relevant lists, that seem appropriate. Thanks, Len, Bjorn, Myron, Rafael [1] https://lkml.org/lkml/2013/3/7/315 -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [PATCH 0/4] PCI: Enable LTR/OBFF before device is used by driver
On Fri, Jun 8, 2012 at 11:31 AM, Bjorn Helgaas wrote: > On Fri, Jun 8, 2012 at 1:01 AM, Xudong Hao wrote: >> The series of patches enable LTR and OBFF before device is used by driver, >> and >> introduce a couple of functions to save/restore LTR latency value. >> >> Patch 1/4 introduce new function pci_obff_supported() as pci_ltr_support(). >> >> Patch 2/4 enable LTR(Latency tolerance reporting) before device is used by >> driver. >> >> Patch 3/4 enable OBFF(optimized buffer flush/fill) before device is used by >> driver. >> >> Patch 4/4 introduce a couple of functions pci_save_ltr_value() and >> pci_restore_ltr_value() to save and restore LTR latency value, while device >> is >> reset. > > We need some justification for these patches. Why do we want them? > Do they improve performance? Reduce power consumption? How have they > been tested? How can we be confident that these features work > correctly on hardware in the field? Should or could the BIOS enable > them itself, based on OEM testing and desire to support these > features? I too am a little nervous about these changes due to Jesse's earlier response (see http://marc.info/?l=linux-pci&m=133372610102933&w=2) where he indicated: "Given how device specific these extensions are, I'd expect you'd need to know about each specific device anyway, which is why I think the control belongs in the driver." Having these features enabled by default may be too aggressive. Not saying it is not correct - something you may be able to inform us about, especially since you are with Intel - just make me nervous without further information. Myron > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majord...@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
