Messages in this thread | | | Date | Mon, 27 Apr 2009 14:00:16 -0700 | Subject | Re: [PATCH] x86/pci: do assign root bus res if _CRS is used | From | Yinghai Lu <> |
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On Mon, Apr 27, 2009 at 1:39 PM, Bjorn Helgaas <bjorn.helgaas@hp.com> wrote:
>> >> other system may have broken _CRS. > > Do you have examples of problems here, or are you just worried that > there *may* be problems? one system with three chains... with pci=use_crs [ 9.365669] pci_bus 0000:00: resource 0 io: [0x00-0x3af] [ 9.371065] pci_bus 0000:00: resource 1 io: [0x3e0-0xcf7] [ 9.376551] pci_bus 0000:00: resource 2 io: [0x3b0-0x3bb] [ 9.382028] pci_bus 0000:00: resource 3 io: [0x3c0-0x3df] [ 9.387513] pci_bus 0000:00: resource 4 io: [0xd00-0xefff] [ 9.393077] pci_bus 0000:00: resource 5 mem: [0x0a0000-0x0bffff] [ 9.399084] pci_bus 0000:00: resource 6 mem: [0x0d0000-0x0dffff] [ 9.405089] pci_bus 0000:00: resource 7 mem: [0xdd000000-0xdfffffff] [ 9.505332] pci_bus 0000:40: resource 0 io: [0x5000-0x8fff] [ 9.510991] pci_bus 0000:40: resource 1 mem: [0xdb000000-0xdcffffff] [ 9.553378] pci_bus 0000:80: resource 0 io: [0x1000-0x4fff] [ 9.559036] pci_bus 0000:80: resource 1 mem: [0xda000000-0xdaffffff]
without that: amd_bus.c will read that from pci conf space [ 9.310965] pci_bus 0000:00: resource 0 io: [0x9000-0xefff] [ 9.316621] pci_bus 0000:00: resource 1 io: [0x00-0xfff] [ 9.322020] pci_bus 0000:00: resource 2 mem: [0xdd000000-0xdfffffff] [ 9.328373] pci_bus 0000:00: resource 3 mem: [0x0a0000-0x0bffff] [ 9.334378] pci_bus 0000:00: resource 4 mem: [0xc0000000-0xd9ffffff] [ 9.340731] pci_bus 0000:00: resource 5 mem: [0xf0000000-0xffffffff] [ 9.347084] pci_bus 0000:00: resource 6 mem: [0x840000000-0xfcffffffff] [ 9.444440] pci_bus 0000:40: resource 0 io: [0x5000-0x8fff] [ 9.450099] pci_bus 0000:40: resource 1 io: [0xf000-0xffff] [ 9.455757] pci_bus 0000:40: resource 2 mem: [0xdb000000-0xdcffffff] [ 9.498118] pci_bus 0000:80: resource 0 io: [0x1000-0x4fff] [ 9.503777] pci_bus 0000:80: resource 1 mem: [0xda000000-0xdaffffff]
> >> maybe we could try to use DMI whitelist them? > > I don't like a whitelist because it requires ongoing maintenance > for correctly-working machines. A blacklist is nicer because it > only requires maintenance for *broken* machines. A date-based > solution would be better from that point of view.
could try apply that in development cycle like -rcX, and disable that formal release. so could find more broken system.
YH
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