On Wed, Feb 27, 2013 at 08:53:37PM -0800, Yinghai Lu wrote: > On Wed, Feb 27, 2013 at 8:42 PM, Guenter Roeck <linux@xxxxxxxxxxxx> wrote: > > Hi all, > > > > we had a discussion about ACPI hotplug today at work. Someone claimed that ACPI > > would not support PCI/PCIe bridge hotplug. > > > > I don't know much about ACPI, but that seemed like a surprising limitation > > to me. After a little research, I found that the ACPI hotplug code seems to > > support it, and Microsoft was talking about adding it to Vista back in 2003. > > > > So ... just for my education, I have a couple of questions: Does ACPI support > > PCI/PCIe bridge hotplug or not ? And if it does, are there any limitations ? > > Yes, Linux kernel support that via acpiphp. > > but that will more rely on bios do the right job in ACPI DSDT. > > Also need to make sure BIOS have leave enough bus number range and > io/mmio range. > > Kernel also have pciehp for pcie hotplug. > Exactly what I thought. Thanks a lot for the clarification. Guenter [ Bjorn, sorry I dropped you from the Cc:, but my e-mail provider and Google still don't like each other ] -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
