Messages in this thread | | | Date | Fri, 17 Sep 2010 14:00:00 -0600 | Subject | ACPI error when mapping a 2GB BAR w/ 4GB of RAM | From | Cam Macdonell <> |
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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@vger.kernel.org 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
with acpi=off, the ACPI error output goes away, but the boot does not get any further.
here are the PCI writes from Qemu related to this BAR's assignment in case they are helpful,
pci_write_config: (val) 0x80000004 -> 0x18 (addr) IVSHMEM: guest pci addr = 80000000, guest h/w addr = 4312137728, size = 80000000 pci_read_config: (val) 0x80000004 <- 0x18 (addr) pci_write_config: (val) 0x1 -> 0x1c (addr) IVSHMEM: guest pci addr = 180000000, guest h/w addr = 4312137728, size = 80000000 pci_read_config: (val) 0x1 <- 0x1c (addr)
Any pointers are appreciated, Cam
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