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(-)
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