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SubjectRe: [PATCH v1 0/3] [RFC] resource, PCI: work around pci=use_crs conflicts
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On Thu, 2010-03-11 at 17:01 -0700, Bjorn Helgaas wrote:
> These patches are to fix this pci=use_crs regression:
>
> http://bugzilla.kernel.org/show_bug.cgi?id=15480
>
> The problem is that BIOS reported a PCI host bridge window that overlaps
> system RAM. This workaround trims the window to avoid the overlap, which
> requires information about the conflicting resource.
>
> Yanko, I reworked these a bit, so if you have a chance to retest them
> and collect another dmesg log, I'd appreciate it.
>
> I'm still hoping for someone to find out how Windows deals with this, but
> haven't gotten any data yet.
>
> ---
>
> Bjorn Helgaas (3):
> resources: add interfaces that return conflict information
> x86/PCI: trim _CRS windows when they conflict with previous reservations
> PCI: for address space collisions, show conflicting resource
>
>
> arch/x86/pci/acpi.c | 48 ++++++++++++++++++++++++++++++++++-------------
> drivers/pci/setup-res.c | 14 ++++++++------
> include/linux/ioport.h | 2 ++
> kernel/resource.c | 44 ++++++++++++++++++++++++++++++++++++-------
> 4 files changed, 82 insertions(+), 26 deletions(-)

Applied on top of latest rawhide kernel. Boots without pci= workarounds
and works fine so far.
Dmesg attached to the bug report.

Thanks



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