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SubjectRe: Regression with commit f9cde5f in 2.6.30-gitX


On Wed, 24 Jun 2009, Larry Finger wrote:
>
> From what I read in Linus's mails, it may be a moot point; however, my
> system boots with these 3, and only these 3, patches applied.

Well, it's definitely not moot. We want "use_crs" to work, whether it's
the default or not. I just doubt it should be the default (necessarily
ever).

The resources listed in the _CRS table may well be useful to make
decisions on (minimally: "is this a root bridge", but possibly also
scanning decisions). But I seriously doubt it makes any sense to insert
the _CRS resources into the bus resource list.

It might, for example, make sense to add them to the resource tree (after
scanning), the same way we add the e820 resources to the resource tree.

But judging from your dmesg:

pci_bus 0000:00: resource 0 io: [0x00-0xcf7]
pci_bus 0000:00: resource 1 io: [0xd00-0xffff]
pci_bus 0000:00: resource 2 mem: [0x0a0000-0x0bffff]
pci_bus 0000:00: resource 3 mem: [0x0c0000-0x0c3fff]
pci_bus 0000:00: resource 4 mem: [0x0c4000-0x0c7fff]
pci_bus 0000:00: resource 5 mem: [0x0c8000-0x0cbfff]
pci_bus 0000:00: resource 6 mem: [0x0cc000-0x0cffff]
pci_bus 0000:00: resource 7 mem: [0x0d4000-0x0d7fff]
pci_bus 0000:00: resource 8 mem: [0x0d8000-0x0dbfff]
pci_bus 0000:00: resource 9 mem: [0x0dc000-0x0dffff]
pci_bus 0000:00: resource 10 mem: [0x0e0000-0x0e3fff]
pci_bus 0000:00: resource 11 mem: [0x0e4000-0x0e7fff]
pci_bus 0000:00: resource 12 mem: [0x0e8000-0x0ebfff]
pci_bus 0000:00: resource 13 mem: [0x0ec000-0x0effff]
pci_bus 0000:00: resource 14 mem: [0x0f0000-0x0fffff]
pci_bus 0000:00: resource 15 mem: [0xc0000000-0xfebfffff]
pci_bus 0000:01: resource 1 mem: [0xfc100000-0xfc1fffff]
pci_bus 0000:01: resource 3 io: [0x00-0xcf7]
pci_bus 0000:01: resource 4 io: [0xd00-0xffff]
pci_bus 0000:01: resource 5 mem: [0x0a0000-0x0bffff]
pci_bus 0000:01: resource 6 mem: [0x0c0000-0x0c3fff]
pci_bus 0000:01: resource 7 mem: [0x0c4000-0x0c7fff]
pci_bus 0000:01: resource 8 mem: [0x0c8000-0x0cbfff]
pci_bus 0000:01: resource 9 mem: [0x0cc000-0x0cffff]
pci_bus 0000:01: resource 10 mem: [0x0d4000-0x0d7fff]
pci_bus 0000:01: resource 11 mem: [0x0d8000-0x0dbfff]
pci_bus 0000:01: resource 12 mem: [0x0dc000-0x0dffff]
pci_bus 0000:01: resource 13 mem: [0x0e0000-0x0e3fff]
pci_bus 0000:01: resource 14 mem: [0x0e4000-0x0e7fff]
pci_bus 0000:01: resource 15 mem: [0x0e8000-0x0ebfff]
pci_bus 0000:01: resource 16 mem: [0x0ec000-0x0effff]
pci_bus 0000:01: resource 17 mem: [0x0f0000-0x0fffff]
pci_bus 0000:01: resource 18 mem: [0xc0000000-0xfebfffff]

none of those look in any way like sensible "resources" to be put in the
device. Quite frankly, they look like total garbage to me.

Linus


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