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SubjectStatus of PCI domain support?

The lack of PCI domain support on x86-64 prevents me from seeing the
following devices on the PCI bus:

61:04.0 RAID bus controller: Silicon Image, Inc. Adaptec AAR-1210SA SATA
HostRAID Controller (rev 02)
61:06.0 SCSI storage controller: LSI Logic / Symbios Logic 53c1030 PCI-X
Fusion-MPT Dual Ultra320 SCSI (rev 07)
61:06.1 SCSI storage controller: LSI Logic / Symbios Logic 53c1030 PCI-X
Fusion-MPT Dual Ultra320 SCSI (rev 07)

I get the following errors, unless I disable the BIOS option 'ACPI bus
segmentation', which is enabled by default (and will be enabled on most
future machines):

Dec 2 10:40:18 localhost kernel: ACPI: PCI Root Bridge [PCI1] (0001:40)
Dec 2 10:40:18 localhost kernel: PCI: Multiple domains not supported
Dec 2 10:40:18 localhost kernel: ACPI: PCI Root Bridge [PCI2] (0002:80)
Dec 2 10:40:18 localhost kernel: PCI: Multiple domains not supported

Full machine info was just posted in another message, subject
"[2.6.15-rc4] oops in acpiphp".

Is this a bug? Is this expected behavior (not implemented yet)? A
jump-start on tracking this down would be appreciated.

Jeff



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