Re: ACPI error when mapping a 2GB BAR w/ 4GB of RAM

From: Chris Wright
Date: Fri Sep 17 2010 - 16:04:49 EST


* Cam Macdonell (cam@xxxxxxxxxxxxxx) wrote:
> After fixing the resource_size_t return value with
> pci_resource_alignment, I see one other strange behaviour only when
> using 4GB of RAM and a 2GB BAR. I haven't found any other combination
> of RAM/BAR size that triggers this bug. I am using 2.6.36-rc3.
>
> ACPI Error: The DSDT has been corrupted or replaced - old, new headers
> below (20100702/tbutils-372)
> ACPI: DSDT (null) 01F15 (v01 BXPC BXDSDT 00000001 INTL 20090123)
> ACPI: (null) 00000 (v00 00000000 00000000)
> ACPI Error: Please send DMI info to linux-acpi@xxxxxxxxxxxxxxx
> If system does not work as expected, please boot with acpi=copy_dsdt
> (20100702/tbutils-378)
> ACPI: PCI Interrupt Link [LNKC] disabled and referenced, BIOS bug
> ACPI Exception: AE_AML_INVALID_RESOURCE_TYPE, Evaluating _CRS
> (20100702/pci_link-283)
> ACPI: Unable to set IRQ for PCI Interrupt Link [LNKC]. Try pci=noacpi
> or acpi=off
> virtio-pci 0000:00:03.0: PCI INT A: no GSI - using ISA IRQ 11
> Non-volatile memory driver v1.3
> Linux agpgart interface v0.103
> Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled

IIRC, the pci hole is only 1.5G in the BIOS, can you verify that
seabios is doing the right thing?

thanks,
-chris
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