On Fri, Dec 04, 2015 at 01:19:35PM +0000, Wan, Vincent wrote: > > > + ivrs_acpihid [HW,X86_64] > > > + Provide an override to the ACPI-HID:UID<->DEVICE-ID > > > + mapping provided in the IVRS ACPI table. For > > > + example, to map UART-HID:UID AMD0020:0 to > > > + PCI device 00:14.5 write the parameter as: > > > + ivrs_acpihid[00:14.5]=AMD0020:0 > > > > What is that parameter needed for? Can't you deduce the mapping from the > > hardware? > > It is very like ivrs_ioapic/ ivrs_hpet, which can override the dedicated BDF id mapped to HID:UID that was reported from BIOS's IVHD entry. > If BIOS did not report a right BDF, we can resort to this parameter to correct it. Please add a verbose, human-readable explanation to the text so that people know what it is for. The text above is hard to parse even for insiders. -- Regards/Gruss, Boris. ECO tip #101: Trim your mails when you reply. -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html