Alok's observations about the ACPI PCI0._CRS() package ResourceProducer AddressRangeMemory definitions is the same approach as my optional PCI-DRAM approach. Possibly where we differ is in how much weight is given to the DSDT values since I found whilst analysing several hundred DSDTs over the past year or so that the values returned could often be 'iffy' or over-vealous. For example, there's a bug in the DSDT of many Sony Vaios whereby the Intel 945 PCI Root Bridge's TOLUD (Top Of Low User Dynamic ram) register is defined as a 6-bit wide field rather than the actual 5 bits, and is then used in _CRS() by the AML to calculate and set the min, max, and length of a range that represents installed RAM. I've also seen instances of large areas being reserved 'just in case' which might be all very well for servers with realistic hot-plug opportunities but definitely cramps the style for notebooks and most desktops. I've decided to publish my code so at least others evaluate it and get some experience of real-world situations. It provides command-line over-rides for all options so it is easy to try different policies, and via sysfs it can be changed on-the-fly. I'm not going to propose it as a patch-set for submission yet, though. It'll be next week before I get chance to publish - so much to do, too much fun to be had! TJ. -- 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
